Project Design
This division provides standards and guidelines for the site layout and design of individual development projects within the various areas of the community. Because Sonoma is comprised of distinct areas with individual character and features representing different periods in history, the provisions of this division are organized by specific “planning areas” within the city. These standards and guidelines are intended to ensure that the appearance and function of proposed development preserves and enhances the desired character of each area.

A. Existing Conditions. The Northeast planning area lies immediately to the north and east of the Plaza and downtown, and extends to the northeast city boundary. The planning area, which encompasses 230 acres, includes many historical structures and diverse land uses. Scenic vistas of the surrounding hillsides along four of the major north-south streets and a portion of the city’s bike path are also important attributes of this area. Existing development is characterized by wide variety in architectural styles, site planning techniques, and street patterns, reflecting different periods in the city’s history. Important natural features include Schocken Hill, which extends into the planning area from the north, and Nathanson Creek, which runs through the southeast edge of the area. Visually, this area is marked by the contrast of rural and urban elements.
Existing land uses include:

A. Existing Conditions. The Central-East planning area is located at the eastern edge of the city, between East Napa Street and East MacArthur Street, and includes some of the oldest residential areas in the community, with mature landscaping and street trees. The streets primarily follow a grid pattern with variable widths, supporting slower traffic. Some streets have sidewalks and/or parkway landscaping strips and many homes have tall, mature hedges along the front property line, which create well defined street edges. Setbacks tend to be large, but vary widely.
The area includes a variety of architectural styles, representative of individual home subdivision and construction. Nathanson Creek meanders from the northern boundary of the planning area along its west edge, where it crosses East MacArthur Street. The east edge of the planning area is adjacent to open fields outside of the city, and the planning area also has views of the hillsides to the north.

A. Existing Conditions. The Southeast area is roughly bounded on three sides by major collector streets, with Nathanson Creek forming the western boundary. The smaller lot sizes and street improvements associated with the single-family subdivisions within the city contrast with the rural lands of the unincorporated sphere of influence, with little transition between the two. The three large single-family subdivisions within city limits are not characterized by any particular street or block pattern, except that all feature curb, gutter, and sidewalk, and none provide, at present, a connection to or continuation of the traditional grid pattern found to the north.
Existing land uses include:

A. Existing Conditions. The Northwest planning area is a predominantly residential district bounded by the West Napa Street/Sonoma Highway commercial corridor on the west and south and the Vallejo Home State Park on the east. Verano Avenue forms the northern boundary. A class 1 bike/walking path crosses the planning area, providing local access to Olsen Park, as well as a route to Maxwell Regional Park on the west and the Plaza on the east. In general, residential development within the area is of three types: (1) older tracts of single-family residences on long, narrow blocks arranged in a grid pattern (east of Fifth Street); (2) newer tracts of single-family residences arranged on curvilinear streets and cul-de-sacs (west of Fifth Street); and (3) multifamily development, in the form of condominiums and P.U.D.s, along West Spain Street.
Existing land uses include:

A. Existing Conditions. The Central-West planning area is large, at 297 acres, and contains a variety of housing types, including low density single-family, mobile home parks, duplexes and fourplexes, as well as large-scale multifamily developments. Sonoma Creek, on the west, represents the area’s most distinct boundary. The West Napa/Sonoma Highway commercial corridor lies to the north, the Downtown district and Broadway to the east, and rural development within the Southwest planning area to the south. The development of this area is recent in terms of the city’s overall history, with the oldest tracts dating back to the 1950s. Within single-family areas, front setbacks tend to be quite consistent (20 feet, usually), less so in the multifamily sections. Most of the streets are developed with monolithic sidewalks rather than planter strips. The major streets within the Central-West area form a grid, continued by some local streets and ignored by others.
Existing land uses include:

A. Existing Conditions. The Southwest planning area, which is entirely residential, is marked by sharp contrasts between rural and urban development. Malet Street and Harrington Drive are rural enclaves, developed mainly with older residences. New residential development includes a single-family tract and a series of higher density tracts featuring detached units on small lots. The Southwest area is bounded by rural and agricultural lands outside of the city’s sphere of influence on the south and west, with the Broadway corridor and the gateway at Four Corners to the east, and urban residential development to the north. The Fryer Creek channel bisects the area. No east-west streets traverse the planning area (with the exception of Leveroni Road), due to the presence of the creek, but there is a bicycle/pedestrian connection at the southern end of the channel. This crossing connects bike/pedestrian pathways which run along either side of the channel, providing access to the two neighborhood parks within the planning area.
Existing land uses include:

A. Existing Conditions. Although the Gateway commercial district encompasses only 59 acres, its future development is crucial to the identity of Sonoma. It forms the southern entrance to the city and marks the division between the rural and agricultural character of the unincorporated area and the urban features of the city. The district is bounded by existing and planned multifamily development to the west and north, rural residential, agricultural, and vacant parcels to the south, and Nathanson Creek to the east. Broadway and Napa/Leveroni Road divide the district into quarters.
Existing land uses include:

A. Existing Conditions. Connecting the southern gateway to the downtown, the Broadway corridor possesses considerable historic, visual, and functional significance. Historically, Broadway completes the Camino Real or “Royal Road” of Spanish/Mexican mission settlements. Visually, Broadway provides a grand entrance to downtown Sonoma with its axial view of the Plaza, City Hall, and the northern hills, its 110-foot right-of-way, and its procession of street trees. Functionally, Broadway is a segment of State Route 12 and is a major traffic arterial. The Broadway corridor is flanked by residential areas, with Nathanson Creek forming its eastern edge and First Street West its western boundary. Parcels along Broadway tend to be long and narrow (to widths of 50 feet) and some have double frontages.
North of MacArthur Street, Broadway possesses a clear visual organization defined by historic structures with landscaped front yards and generally regular setbacks, street trees, and a consistent street width. South Broadway, in contrast, features a patchwork of older (but not historic) commercial buildings, new commercial and multifamily residential development, historic single-family homes and remnant agricultural buildings. These uses are interspersed with vacant parcels. However, the dominant use on South Broadway, in terms of area, appearance, and intensity, is the high school. Street improvements along South Broadway are inconsistent.

A. Existing Conditions. The Downtown district is the heart of Sonoma. The district centers on the Plaza and the historic downtown, collectively designated as a National Historic Landmark. The Sonoma Plaza is an eight-acre park, framed by historic buildings, with City Hall at its center. The downtown encompasses a lively concentration of small businesses, including restaurants, bookstores, specialty retail, and offices. A cluster of historically significant buildings on the north side of the district, including the mission and the barracks, are managed as a state park. Outside of the original downtown area, the western portion of the district contains a mix of single-family, multifamily, retail, and office development, including a modern shopping center. Multifamily development lies at the northwest and southeast edges of the district.
Existing land uses include:

A. Existing Conditions. Located in west and northwest Sonoma, the West Napa Street/Sonoma Highway corridor is a commercial strip comprised of segments of State Highway 12. Beginning at West Napa Street/Third Street West, it extends westward along West Napa Street to Riverside Drive, then northward along the Sonoma Highway to Harley Street. Although it contains a wide variety of uses and building types, many of the blocks within the corridor present a pleasing appearance and exhibit a high degree of visual organization. The corridor is also punctuated by shopping centers with expansive parking lots, some only lightly landscaped, which break the rhythm established by smaller-scale development. Still other segments are more notable for their natural features and present a distinctly rural appearance (Sonoma Creek is a significant, if underutilized, natural amenity). Throughout the corridor, there are axial views of the hills surrounding Sonoma. West Napa Street and the Sonoma Highway are the city’s primary collectors and the corridor contains the most heavily travelled streets in Sonoma.
Existing land uses include:
A. Existing Conditions. The three open space districts are characterized by large areas of land in public ownership devoted to open space and recreational uses. The Maxwell district has an area of approximately 89 acres, all of which is owned by Sonoma County and dedicated to use as a regional park. The Maxwell Farms Regional Park encompasses a range of recreational uses, including playing fields, a Boys and Girls Club, and natural hiking areas.
The Vallejo district is dominated by the 57-acre Vallejo Home State Park. The historic buildings within this park are set off by expansive vistas. North of the park are several large, vacant parcels, currently used for grazing but having a zoning of Hillside Residential. Other uses within the district include a complex of city buildings (the police station and the city council chambers) and playing fields, a church, and a small amount of residential development.
This division establishes 13 planning areas within the city, based on the time periods and types of development and land uses that characterize each area. This division also establishes site planning and design standards for each area to ensure that proposed projects are designed to enhance and maintain the most desirable development and environmental characteristics of each unique area of the city. The planning areas are described in terms of three subtypes – areas, districts, and corridors – depending upon their function, their geography, and the range of land uses within them. (Ord. 2003-02 § 3, 2003).
The provisions of this division are applicable to specific sites within the city based on the area where the site is located. The following planning areas are hereby established (see Table 3-1). The overall structure of the planning areas is depicted on Figure 1 and the location and boundaries of each area are shown on Figure 3-21.
Table 3-1. Planning Areas
Planning Area | See |
|---|---|
Northeast Area | Chapter 19.18 SMC |
Central-East Area | Chapter 19.20 SMC |
Southeast Area | Chapter 19.22 SMC |
Northwest Area | Chapter 19.24 SMC |
Central-West Area | Chapter 19.26 SMC |
Southwest Area | Chapter 19.28 SMC |
Gateway District | Chapter 19.30 SMC |
Broadway Corridor | Chapter 19.32 SMC |
Downtown District | Chapter 19.34 SMC |
West Napa Street/Sonoma Highway Corridor | Chapter 19.36 SMC |
Open Space Districts | Chapter 19.38 SMC |

(Ord. 2003-02 § 3, 2003).
Each planning area is the subject of a separate chapter containing standards, guidelines, and background information specific to that area, divided between three sections.
A. Overview and Objectives. The first section (“Existing Conditions, Desired Future, Potential Changes”) contains a general overview of the planning area, a statement of broad planning objectives, and a description of likely public improvements and other potential changes, as follows:
1. Existing Conditions. The discussion of existing conditions which opens each chapter is intended to briefly set forth the unique characteristics of each planning area in terms of natural and built features. A primary purpose of this section is to provide a context for the regulations and guidelines that follow.
2. Desired Future. This subsection contains a discussion of the general planning objectives for the area as derived from relevant General Plan policies and the particular conditions of the planning area. It is to be used by decision-making bodies, including the city council, the historic preservation commission, and the planning commission, as a reference to the larger intent of specific development regulations and as guidelines in the review of discretionary development applications within each planning area.
3. Potential Changes. In this subsection, specific public improvements relevant to each planning area are described, including street extensions, new bicycle and pedestrian paths, drainage improvements, and street tree plantings. Also described are approved or anticipated private development projects of significance to the planning area. Projects and improvements are drawn from General Plan policies and implementation measures, the city’s five-year capital improvement program, other project objectives identified by the city council, approved and anticipated development proposals, and projects identified by other agencies (e.g., the Sonoma Valley Unified School District). The purposes of this section are to:
a. Provide decision-makers and the general public with a common frame of reference as to potential public improvements and other changes relevant to development conditions;
b. Provide a basis for requiring new development to participate in the provision of public improvements when such participation is warranted due to the impacts of development;
c. Ensure that known and prospective public improvements are considered in the review of development applications.
B. Development Standards and Guidelines. The second section (“Project Planning and Design Standards”) sets forth specific development standards and guidelines applicable to new development. The specific provisions of this section are as follows:
1. Zoning Map. A zoning map is provided for each planning area depicting the zoning districts within it, as well as the zoning designations which would apply to areas outside of the city limits but within the sphere of influence.
2. Site Planning. The physical standards, requirements, and guidelines applicable to new development are set forth in this subsection, including limitations on density and regulations pertaining to building setbacks, coverage, open space and parking design. Environmental features and screening and buffering requirements are also addressed.
3. Building Design. In this subsection, standards and guidelines regarding building heights, types, and profiles are provided.
4. Design Map and Guidelines. Concluding the chapter for each planning area is a design map and accompanying design guidelines. The map and guidelines are intended to highlight key planning issues facing each planning area.
C. Overview of Conditions. The concluding section is a map in which the major physical features of each planning area are identified, including streets, building envelopes, creeks, and contour lines. The balance of land uses and the number of units within each planning area are summarized as well. (Ord. 06-2013 § 3, 2013; amended during June 2011 supplement; Ord. 2003-02 § 3, 2003).
New land uses and structures, and alterations to existing land uses and structures, shall be designed, constructed, and/or established in compliance with the requirements of this division for the applicable planning area, in addition to the applicable development standards in Division IV, General Site Planning and Development Standards. (Ord. 2003-02 § 3, 2003).
A. Existing Conditions. The Northeast planning area lies immediately to the north and east of the Plaza and downtown, and extends to the northeast city boundary. The planning area, which encompasses 230 acres, includes many historical structures and diverse land uses. Scenic vistas of the surrounding hillsides along four of the major north-south streets and a portion of the city’s bike path are also important attributes of this area. Existing development is characterized by wide variety in architectural styles, site planning techniques, and street patterns, reflecting different periods in the city’s history. Important natural features include Schocken Hill, which extends into the planning area from the north, and Nathanson Creek, which runs through the southeast edge of the area. Visually, this area is marked by the contrast of rural and urban elements.
Existing land uses include:
1. A scattering of commercial uses, including a restaurant, a small office building, the Vella Cheese company and a light industrial facility;
2. Medium density residences, including a few small lot subdivisions and multifamily dwellings;
3. Depot Park and a complex of county-owned recreational facilities including the Veterans’ Building and Arnold Field;
4. Sebastiani Winery and a small amount of vineyard land;
5. Rural hillside residential areas;
6. Low density single-family residences;
7. Agricultural land; and
8. Undeveloped open space areas zoned for other land uses.
The bicycle/walking path which runs east and west through the center of the planning area is an important recreational and social element of the Northeast planning area.
B. Desired Future. The general objective for this area, as expressed in SMC 19.18.020, Project planning and design, is to preserve the quality and context of land uses and buildings. Remodeling or additions to existing structures and infill development including intensification in mixed use areas, will require careful attention to surrounding building form, site design, and land uses to preserve the quality of development in the Northeast planning area. The emphasis of mixed use development should be residential, with some small-scale office, bed and breakfast, or other compatible commercial land uses allowed subject to use permit review.
C. Potential Changes. Specific improvements contemplated in this area include improvements to the Maysonnave property and Depot Park, the creation of a pedestrian corridor linking the Plaza, Depot Park and the Sonoma Overlook Trail, and landscaping improvements to public parking lots. (Ord. 2003-02 § 3, 2003).
A. Site Planning Standards.
1. Residential Density. The following residential density and minimum lot size requirements apply to proposed subdivisions and multifamily developments within the Northeast planning area.
Table 3-2. Lot Size and Residential Density Requirements
Zoning District | Number of Dwellings Per Parcel1 | Minimum Lot Size |
|---|---|---|
R-HS | 1 maximum; | 10 acres |
R-R | 2 per acre maximum | 20,000 sq. ft. |
R-L | 2 per acre minimum; | 7,500 sq. ft. |
R-M | 7 per acre minimum; | 5,500 sq. ft. |
MX | 20 per acre maximum | 7,000 sq. ft. |
W | None2 | 5 acres |
A | 1 maximum | 10 acres |
Notes:
1.Densities do not include density bonus. See Chapter 19.44 SMC.
2.Residences are not allowed in the W zone, except for caretaker residences authorized through use permit approval.
2. Setbacks, Site Coverage, and Open Space. Proposed development shall be designed and constructed in compliance with the requirements set forth in Tables 3-3 and 3-4.
Table 3-3. Northeast Area: Infill and Additions
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | ||||||
|---|---|---|---|---|---|---|---|
W1 | A | R-HS | R-R | R-L | R-M | MX | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | ||||||
Front/Street-side2 | 30 ft. | 30 ft. | New construction: 20 ft. or the same as the closest structure to the street on either side, whichever is more. Additions: 20 ft. | New construction: 15 ft. or the same as the closest structure to the street on either side, whichever is less. Additions: 15 ft. | N.A. | ||
Side: | 30 ft. | 20 ft. min., 50 ft. total | 7 ft. minimum, | 7 ft. minimum, | |||
Side: | 30 ft. | 20 ft. min., 50 ft. total | 7 ft.minimum, | 7 ft. minimum, | |||
Rear | 30 ft. | 30 ft. | 25 ft. | 20 ft. | |||
Garage: | 30 ft. | 30 ft. | 20 ft. from primary structure | ||||
F.A.R./Site Coverage | |||||||
F.A.R. | N.A. | 0.05 | 0.10 | 0.20 | 0.35 | 0.50 | 0.60 |
Site Coverage | N.A. | 10% | 15% | 25% | 40% | 60% | 60% |
Open Space | |||||||
Commercial | No minimum requirement. | N.A. | 7% – 11% of site | ||||
Residential: Common | No minimum requirement. | 300 sq. ft. per unit | |||||
Residential: Private | No minimum requirement. | 75 – 225 sq. ft. per unit | |||||
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | ||||||
Primary Structure | 35 ft. | 30 ft. | |||||
Notes:
1.Setbacks in the W district may be reduced where the review authority first finds that the reduced setback would not be detrimental to surrounding land uses.
Table 3-4. Northeast Area: Subdivisions of 5+ Lots
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | |
|---|---|---|
R-M | MX | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | |
Front/Street-side1 | 15 ft., one-story 20 ft., two-story | A variety of setbacks, consistent with neighborhood conditions, shall normally be required at the discretion of the planning commission. |
Side: | 5 ft. minimum, | 5 ft. minimum, |
Side: | 10 ft. minimum on two-story side | 8 ft. minimum on two-story side |
Rear | One-story: 20 ft.; two-story: 25 ft. | One-story: 15 ft.; two-story: 20 ft. |
Garage: | 20 ft. from primary structure | 20 ft. from primary structure |
F.A.R./Site Coverage | ||
F.A.R. | 0.45 | 0.60 |
Site Coverage | 50% | 60% |
Open Space | Minimum open space required for residential development component only. See SMC 19.40.070 and 19.40.080 for design requirements. | |
Commercial | 7% – 11% of site | 7% – 11% of site |
Residential: Common | 300 sq. ft. per unit | 300 sq. ft. per unit |
Residential: Private | 75 – 225 sq. ft. per unit | 75 – 225 sq. ft. per unit |
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | |
Primary Structure | 30 ft. | 30 ft. |
Notes:
3. Driveways and Parking. Parking areas for multifamily and mixed use developments shall not be located in a front setback, but shall be provided at the rear or along the side of the site. Nonresidential and multifamily parking areas shall be screened from adjacent residential zoning districts and land uses. See Chapter 19.48 SMC, Parking and Loading Standards.
4. Natural Features. Environmental amenities including creeks, streams and other drainage courses, mature trees, and rock outcrops shall be preserved and incorporated into the proposed site plan. Appropriate enhancement or protective measures shall be included in plans where determined necessary by the planning commission. See SMC 19.40.050, Hillside development, and SMC 19.40.060, Landscape standards, and the tree preservation ordinance for specific hillside development and tree preservation requirements and guidelines.

5. Screening and Buffering. Multifamily and mixed use development shall require screening and buffering of parking and driveway areas, and noise and light sources. See Chapter 19.46 SMC, Fences, Hedges and Walls, and landscape standards and guidelines (SMC 19.40.060).
B. Building Design.
1. Height and Profile. Proposed structures shall not exceed a maximum height of two stories or 30 feet; provided, that structures in the A and the W zoning districts may be allowed up to 35 feet in height. Second stories shall be set back an additional 10 feet from the front setback, and five feet on the sides and rear setbacks. See the following design guidelines, and SMC 19.40.040, for height measurement and exceptions.
2. Building Types – Guidelines for Residential Structures. Proposed dwellings should be placed on their sites so that the most narrow dimension of the structure is parallel to the most narrow dimension of the parcel, and so that the primary entrance to the dwelling faces the public street, or is accessible from a porch or other entry element which faces the street.
3. Building Types – Guidelines for Commercial Structures. Proposed commercial and mixed use structures should be compatible in scale, massing height to residential development in the vicinity. Building architecture and design details should maintain a low-key, residential flavor.
C. Street and Block Layout. It is intended that streets within the Northeast Planning Area will be maintained at their existing width and alignment. (Ord. 02-2021 § 1(1), 2021; Ord. 03-2004 § 3, 2004; Ord. 2003-02 § 3, 2003).
A. Existing Conditions. The Central-East planning area is located at the eastern edge of the city, between East Napa Street and East MacArthur Street, and includes some of the oldest residential areas in the community, with mature landscaping and street trees. The streets primarily follow a grid pattern with variable widths, supporting slower traffic. Some streets have sidewalks and/or parkway landscaping strips and many homes have tall, mature hedges along the front property line, which create well defined street edges. Setbacks tend to be large, but vary widely.
The area includes a variety of architectural styles, representative of individual home subdivision and construction. Nathanson Creek meanders from the northern boundary of the planning area along its west edge, where it crosses East MacArthur Street. The east edge of the planning area is adjacent to open fields outside of the city, and the planning area also has views of the hillsides to the north.
Existing land uses include:
1. Low density single-family homes;
2. Four neighborhood parks;
3. The Sonoma Community Center;
4. Undeveloped, Sonoma residential property in the sphere of influence; and
5. A cemetery.
B. Desired Future. The general objective for this area, as expressed in SMC 19.20.020, Project planning and design, is to preserve the existing quality and fabric of residential neighborhoods in the Central-East planning area. Two key issues that could affect efforts to maintain the character of the area include a significant number of parcels that could be subdivided as infill lots, and the site planning and building design techniques employed in their development. Development of the potential infill parcels will mainly need to focus on visual compatibility with the adjacent patterns of site design, building scale, and architectural context.
C. Potential Changes. The future development of the parcels east of Armstrong Estates will lead to the extension of Charles Van Damme Way and William Cunningham Avenue, and perhaps to the connection of Appleton Way with East Napa Street. This area, portions of which are currently outside of city limits, has an R-S designation, which calls for somewhat higher densities and a greater variety in lot sizes than what is found in the development to the west (Armstrong Estates), which features lots having a minimum area of 20,000 square feet. (Ord. 2003-02 § 3, 2003).
A. Site Planning.
1. Residential Density. The following residential densities and minimum lot size requirements apply to proposed subdivisions and multifamily projects within the Central-East planning area.
Table 3-5. Lot Size and Residential Density Requirements
Zoning District | Number of Dwellings Per Parcel1 | Minimum Lot Size |
|---|---|---|
R-L | 2 per acre minimum; | 7,500 sq. ft. |
R-S | 3 per acre minimum; | 5,000 sq. ft. |
R-M | 7 per acre minimum; | 5,500 sq. ft. |
Notes:
1.Densities do not include density bonus. See Chapter 19.44 SMC.
2. Setbacks, Site Coverage, and Open Space. Proposed development shall be designed and constructed in compliance with the requirements set forth in Tables 3-6 and 3-7, following.
3. Driveways and Parking. Driveways and parking areas for multifamily projects shall not be located in a front setback, but shall be provided at the rear or along the side of the site. Nonresidential and multifamily parking areas shall be screened from adjacent residential zoning districts and land uses. See Chapter 19.48 SMC, Parking and Loading Standards.
4. Natural Features. Significant environmental amenities including Nathanson Creek, related riparian areas, and mature trees, shall be preserved by being incorporated into site plan design and layout. Appropriate enhancement or protective measures shall be included in plans where determined necessary by the planning commission. See landscaping standards and design guidelines (SMC 19.40.060), and the tree preservation ordinance for specific tree preservation requirements and guidelines. Environmental features of lesser significance should be incorporated into project site plans when appropriate if justified by the quality of the feature and its relation to the site.
Table 3-6. Central-East Area: Infill and Additions
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | ||
|---|---|---|---|
R-L | R-S | R-M | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | ||
Front/Street-side1 | New structures on vacant parcels: 25 ft. or the same as the average of structures to the street on either side, whichever is greater.2 Additions: 20 ft. Nonconforming replacement structures: The same location as the original structure. | 20 ft. | |
Side: | 7 ft. minimum, 18 ft. combined | 5 ft. minimum, 15 ft. combined | 5 ft. minimum, 15 ft. combined |
Side: | 3 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,4 in addition to the normal requirement for one-story structures. | 2 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,4 in addition to the normal requirement for one-story structures. | 8 ft. minimum on two-story side |
Rear | 20 ft. | 15 ft. | |
Garage: | 20 ft. from the front of the primary structure | 20 ft. from the front of the primary structure | 20 ft. from the front of the primary structure |
F.A.R./ Site Coverage | |||
F.A.R. | 0.35 | 0.35 | 0.50 |
Site Coverage | 40% | 40% | 60% |
Open Space | See SMC 19.40.070 for design requirements. | ||
Residential: Common | N.A. | N.A. | 300 sq. ft. per unit |
Residential: Private | N.A. | N.A. | 75 – 225 sq. ft. per unit |
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | ||
Primary Structure | 35 ft. on parcels of 20,000 sq. ft. or greater, otherwise 30 ft. | 30 ft. | 30 ft. |
Notes:
1.Front porches may extend up to 10 feet into front setback (or street-side setback for wrap-around porches).
2.Where averaging adjacent structures results in a setback of greater than 30 feet, a 30-foot setback shall be allowed.
3.A nonconforming replacement structure shall not exceed 10 percent of the height or area of the original structure, unless a use permit is obtained.
4.Measured at building wall, not ridge.
Table 3-7. Central-East Area: New Subdivisions of 5+ Lots
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | ||
|---|---|---|---|
R-L | R-S | R-M | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | ||
Front/Street-side1 | A variety of setbacks, compatible with neighborhood conditions, shall normally be required at the discretion of the planning commission. An average setback of 25 ft. shall be maintained. | 20 ft. | |
Side: | 7 ft. minimum, 18 ft. combined | As approved by the planning commission, except that in no case shall a setback of less than 3 ft. be allowed. | 5 ft. minimum, 15 ft. combined |
Side: | 3 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,2 in addition to the normal requirement for one-story structures. | 8 ft. minimum on two-story side | |
Rear | 20 ft. | 15 ft. | |
Garage: | 20 ft. from the front of the primary structure | 20 ft. from the front of the primary structure | 20 ft. from the front of the primary structure |
F.A.R./Site Coverage | |||
F.A.R. | 0.35 | 0.35 | 0.50 |
Site Coverage | 40% | 40% | 60% |
Open Space | See SMC 19.40.070 for design requirements. | ||
Residential: Common | N.A. | 500 sq. ft. per unit, any combination of shared or private | 300 sq. ft. per unit |
Residential: Private | N.A. | 75 – 225 sq. ft. per unit | |
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | ||
Primary Structure | 35 ft. on parcels of 20,000 sq. ft. or greater; otherwise 30 ft. | 30 ft. | 30 ft. |
Notes:
1.Front porches may extend up to 10 feet into front setback (or street-side setback for wrap-around porches).
2.Measured at building wall, not ridge.
5. Screening and Buffering. Multifamily developments shall require screening and buffering of parking and driveway areas, and noise and light sources. See Chapter 19.46 SMC, Fences, Hedges and Walls, and landscape standards and guidelines (SMC 19.40.060).
B. Building Design.
1. Height and Profile. Proposed structures shall not exceed a maximum height of 30 feet. Structures may exceed the height standard by increasing side and rear setbacks by two feet for each additional five feet in height. Second stories must be set back an additional 10 feet from the front setback, and five feet on the sides and rear setbacks. See the following design guidelines, and SMC 19.40.040 for height measurement and exceptions.
2. Building Types – Guidelines for Residential Structures. Proposed dwellings should be placed on their sites so that the most narrow dimension of the structure is parallel to the most narrow dimension of the parcel, and so that the primary entrance to the dwelling faces the public street, or is accessible from a porch or other entry element which faces the street.
C. Street and Block Layout. It is intended that streets within the Central-East planning area will be maintained at their existing width and alignment. (Ord. 02-2021 § 1(2), 2021; Ord. 03-2004 § 3, 2004; Ord. 2003-02 § 3, 2003).
A. Existing Conditions. The Southeast area is roughly bounded on three sides by major collector streets, with Nathanson Creek forming the western boundary. The smaller lot sizes and street improvements associated with the single-family subdivisions within the city contrast with the rural lands of the unincorporated sphere of influence, with little transition between the two. The three large single-family subdivisions within city limits are not characterized by any particular street or block pattern, except that all feature curb, gutter, and sidewalk, and none provide, at present, a connection to or continuation of the traditional grid pattern found to the north.
Existing land uses include:
1. Low density single-family homes;
2. A large block of vacant or lightly developed Sonoma residential and low density residential properties in the sphere of influence;
3. A creekside neighborhood park;
4. The Sonoma Valley High School and its associated playing fields on the east;
5. A middle school;
6. An elementary school; and
7. A cemetery.
B. Desired Future. The general objectives for this area, as expressed in SMC 19.22.020, Project planning and design, are as set forth below. The area along Fifth Street East, between Denmark Street and Napa Road, represents the largest block of undeveloped residential land within the sphere of influence. Its development should be based on elements found in traditional Sonoma neighborhoods, including grid streets, a mix of lot sizes, and variation in the size and style of homes. The development of this area should result in a distinct edge to the city, rather than a “feathering” effect, and should connect to adjoining subdivisions.
C. Potential Changes. The development of the Sonoma residential area will allow for additional grid street connections to Fifth Street East, Denmark Street, and, potentially, Napa Road. The extension of curb, gutter and sidewalk, and the undergrounding of drainage will be needed along the east side of Fifth Street East and the north side of Napa Road. In addition, the intersection of Fifth Street East/Napa Road will ultimately need to be signalized.
The high school expansion and the recently completed middle school on the property south of the high school have implications for the residential development adjacent to the east. The placement of buildings, playing fields, access and parking should support those neighborhoods, not diminish them. To provide convenient access to playing fields and other facilities on the east side of the creek, an access road (public or private) should be extended to connect Denmark Street with Newcomb Street. Opportunities for creek restoration should be pursued along the bicycle/pedestrian path recently developed on the east side of Nathanson Creek. Connections to this path should be made to the residential areas on the east. (Ord. 2003-02 § 3, 2003).
A. Site Planning Standards.
1. Residential Density. The following residential density and minimum lot size requirements apply to proposed subdivisions and multifamily projects within the Southeast planning area:
Table 3-8. Lot Size and Residential Density Requirements
Zoning District | Number of Dwellings Per Parcel1 | Minimum Lot Size |
|---|---|---|
R-L | 2 per acre minimum; | 7,500 sq. ft. |
R-S | 3 per acre minimum; | 5,000 sq. ft. |
R-M | 7 per acre minimum; | 5,500 sq. ft. |
Notes:
1.Densities do not include density bonus. See Chapter 19.44 SMC.
2. Setbacks, Site Coverage, and Open Space. Proposed development shall be designed and constructed in compliance with the requirements set forth in Tables 3-9 and 3-10, following.
3. Driveways and Parking. Parking areas for multifamily projects shall not be located in a front setback, but shall be provided at the rear or along the side of the site. Multifamily parking areas shall be screened from adjacent residential zoning districts and land uses. See Chapter 19.48 SMC, Parking and Loading Standards. Driveways along collector streets shall be minimized when possible, by combining driveways, using alleys, or designing development so that access is provided from local streets.
4. Natural Features. Significant environmental amenities, including Nathanson Creek, related riparian areas, and mature oak trees, shall be preserved by being incorporated into site plan design and layout. Appropriate enhancement or protective measures shall be included in plans where determined necessary by the planning commission. See landscaping standards and design guidelines (SMC 19.40.060), and the tree preservation ordinance for specific tree preservation requirements and guidelines. Environmental features of lesser significance should be incorporated into project site plans when appropriate if justified by the quality of the feature and its relation to the site.
5. Screening and Buffering. Multifamily developments shall require screening and buffering of parking and driveway areas, and noise and light sources. See Chapter 19.46 SMC, Fences, Hedges and Walls, and landscape standards and guidelines (SMC 19.40.060).
B. Building Design.
1. Height and Profile. Proposed structures shall not exceed a maximum height of 30 feet. For structures in excess of 15 feet, side and rear setbacks shall be increased by two feet for each additional five feet in height. See the following design guidelines, and SMC 19.40.040 for height measurement and exceptions.
2. Building Types – Guidelines for Residential Structures. Proposed dwellings should be placed on their sites so that the most narrow dimension of the structure is parallel to the most narrow dimension of the parcel, and so that the primary entrance to the dwelling faces the public street, or is accessible from a porch or other entry element which faces the street.
C. Street and Block Layout. It is intended that streets within the Southeast planning area will be maintained at their existing width and alignment.
Table 3-9. Southeast Area: Infill and Additions
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | ||
|---|---|---|---|
R-L | R-S | R-M | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | ||
Front/Street-side1 | New structures on vacant parcels: 20 ft. or the same as the average of structures to the street on either side, whichever is greater.2 Additions: 20 ft. Nonconforming replacement structures: The same location as the original structure.3 | 15 ft. | |
Side: | 7 ft. minimum, 18 ft. combined | 5 ft. minimum, 15 ft. combined | 5 ft. minimum, 15 ft. combined |
Side: | 3 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,4 in addition to the normal requirement for one-story structures. | 2 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,4 in addition to the normal requirement for one-story structures. | 8 ft. minimum on two-story side |
Rear | 20 ft. | 15 ft. | |
Garage: | 20 ft. from the front of the primary structure | 20 ft. from the front of the primary structure | 20 ft. from the front of the primary structure |
F.A.R./Site Coverage | |||
F.A.R. | 0.35 | 0.35 | 0.50 |
Site Coverage | 40% | 40% | 60% |
Open Space | See SMC 19.40.070 for design requirements. | ||
Residential: Common | N.A. | 500 sq. ft. per unit, any combination of shared or private. | 300 sq. ft. per unit, any combination of shared or private. |
Residential: Private | N.A. | ||
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | ||
Primary Structure | 30 ft. | 30 ft. | 30 ft. |
Notes:
1.Front porches may extend up to 10 feet into front setback (or street-side setback for wrap-around porches).
2.Where averaging adjacent structures results in a setback of greater than 30 feet, a 30-foot setback shall be allowed.
3.A nonconforming replacement structure shall not exceed 10 percent of the height or area of the original structure, unless a use permit is obtained.
4.Measured at building wall, not ridge.
Table 3-10. Southeast Area: New Subdivisions of 5+ Lots
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | ||
|---|---|---|---|
R-L | R-S | R-M | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | ||
Front/Street-side1 | A variety of setbacks, compatible with neighborhood conditions, shall normally be required at the discretion of the planning commission. An average setback of 20 feet shall be maintained. | 15 ft. | |
Side: | 7 ft. minimum, 18 ft. combined | As approved by the planning commission, except that in no case shall a setback of less than 3 ft. be allowed. | 5 ft. minimum, 15 ft. combined |
Side: | 3 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,2 in addition to the normal requirement for one-story structures. | 8 ft. minimum on two-story side | |
Rear | 20 ft. | 15 ft. | |
Garage: | 20 ft. from the front of the primary structure | 20 ft. from the front of the primary structure | 20 ft. from the front of the primary structure |
F.A.R./Site Coverage | |||
F.A.R. | 0.35 | 0.35 | 0.50 |
Site Coverage | 40% | 40% | 60% |
Open Space | See SMC 19.40.070 for design requirements. | ||
Residential: Common | N.A. | 500 sq. ft. per unit, any combination of shared or private | 300 sq. ft. per unit, any combination of shared or private |
Residential: Private | N.A. | ||
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | ||
Primary Structure | 30 ft. | 30 ft. | 30 ft. |
Notes:
1.Front porches may extend up to 10 feet into front setback (or street-side setback for wrap-around porches).
2.Measured at building wall, not ridge.
A. Existing Conditions. The Northwest planning area is a predominantly residential district bounded by the West Napa Street/Sonoma Highway commercial corridor on the west and south and the Vallejo Home State Park on the east. Verano Avenue forms the northern boundary. A class 1 bike/walking path crosses the planning area, providing local access to Olsen Park, as well as a route to Maxwell Regional Park on the west and the Plaza on the east. In general, residential development within the area is of three types: (1) older tracts of single-family residences on long, narrow blocks arranged in a grid pattern (east of Fifth Street); (2) newer tracts of single-family residences arranged on curvilinear streets and cul-de-sacs (west of Fifth Street); and (3) multifamily development, in the form of condominiums and P.U.D.s, along West Spain Street.
Existing land uses include:
1. Low density single-family homes;
2. Condominiums and planned developments;
3. A neighborhood park;
4. A restaurant and a cooking school;
5. A parking area and a small office building associated with the Sonoma Valley shopping center; and
6. Scattered vacant parcels, some of them as large as 14 acres.
B. Desired Future. As expressed in SMC 19.24.020, the general objectives for the Northwest planning area are as follows: Within the single-family areas, additions and reconstruction will increase the architectural variety of the area, a trend which should be encouraged while preserving the generally small scale of the older tracts and avoiding the over-building of lots. The largest opportunity for new residential development is represented by the Montini property, a 14-acre parcel located at the northwest corner of the planning area, adjacent to the Vallejo Home State Park. Its development should contribute to the character of the area by extending the grid pattern of the older residential blocks to the south, while providing a greater variety of lot sizes and unit types as called for by its Sonoma Residential zoning designation.
New multifamily development along West Spain Street should emulate the good examples in the area by providing generous street-side setbacks, maintaining low building profiles, and locating parking within the interior or the back of the lot.
C. Potential Changes. Views from Fifth Street West of the northern hills lost through the development of the Montini property will be regained by the extension of Fourth Street West and Verano Avenue. While Fourth Street West will also be extended from West Spain Street to connect with Rosalie Drive, no connection will be made across the bike path in order to preserve the safety of the path and to prevent Fourth Street from being used as a shortcut to Sonoma Highway. Pedestrian access to and from Sonoma Market will be improved by closing gaps in the sidewalk system, especially at the intersection of Fifth Street West and West Spain Street. This intersection may ultimately be signalized. (Ord. 2003-02 § 3, 2003).
A. Site Planning Standards.
1. Residential Density. The following density and minimum lot size requirements apply to proposed subdivisions and multifamily projects within the Northwest planning area:
Table 3-11. Lot Size and Residential Density Requirements
Zoning District | Number of Dwellings Per Parcel1 | Minimum Lot Size |
|---|---|---|
R-L | 2 per acre minimum; | 7,500 sq. ft. |
R-S | 3 per acre minimum; | 5,500 sq. ft. |
R-M | 7 per acre minimum; | 5,000 sq. ft. |
MX | 20 per acre maximum | 7,000 sq. ft. |
Notes:
1.Densities do not include density bonus. See Chapter 19.44 SMC.
2. Setbacks, Site Coverage, and Open Space. Proposed development shall be designed and constructed in compliance with the requirements set forth in Tables 3-12 and 3-13.
3. Driveways and Parking. Parking areas for multifamily projects shall not be located in a front setback, but shall be provided at the rear or along the side of the site. Multifamily parking areas shall be screened from adjacent residential zoning districts and land uses. See Chapter 19.48 SMC, Parking and Loading Standards. Driveways along collector streets (West Spain Street, Fifth Street West, and Verano Avenue) shall be minimized when possible, by combining driveways, using alleys, or designing development so that access is provided from local streets.
4. Natural Features. Significant environmental amenities, including mature oak trees, shall be preserved by being incorporated into site plan design and layout. Appropriate enhancement or protective measures shall be included in plans where determined necessary by the planning commission. See landscaping standards and design guidelines (SMC 19.40.060), and the tree preservation ordinance for specific tree preservation requirements and guidelines. Environmental features of lesser significance should be incorporated into project site plans when appropriate if justified by the quality of the feature and its relation to the site.
5. Screening and Buffering. Multifamily developments shall require screening and buffering of parking and driveway areas, and noise and light sources. See Chapter 19.46 SMC, Fences, Hedges and Walls, and landscape standards and guidelines (SMC 19.40.060).
B. Building Design.
1. Height and Profile. Proposed structures shall not exceed a maximum height of 30 feet. For structures in excess of 15 feet, side and rear setbacks shall be increased by two feet for each additional five feet in height. See the following design guidelines, and SMC 19.40.040 for height measurement and exceptions.
2. Building Types – Guidelines for Residential Structures. Proposed dwellings should be placed on their sites so that the most narrow dimension of the structure is parallel to the most narrow dimension of the parcel, and so that the primary entrance to the dwelling faces the public street, or is accessible from a porch or other entry element which faces the street.
C. Street and Block Layout. It is intended that streets within the Northwest planning area will be maintained at their existing width and alignment.
Table 3-12. Northwest Area: Infill and Additions
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | |||
|---|---|---|---|---|
R-L | R-S | R-M | MX | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | |||
Front/Street-side1 | 20 ft. | 20 ft. | One-story: 15 ft. Two-story: 20 ft. | 15 ft. |
Side: | 5 ft. minimum, 15 ft. combined | 5 ft. minimum, 15 ft. combined | 5 ft. minimum, 15 ft. combined | None required, except when abutting a residential zone, in which case the corresponding setback in the residential zone shall apply. |
Side: | 2 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,2 in addition to the normal requirement for one-story structures. | 2 ft. for every 5 ft. (or fraction thereof) of height above 20 ft.,2 in addition to the normal requirement for one-story structures. | ||
Rear | 20 ft. | 20 ft. | One-story: 15 ft. Two-story: 20 ft. | |
Garage: | 5 ft. from the front of the primary structure | 20 ft. from the front of the primary structure | 20 ft. from the front of the primary structure | N.A. |
F.A.R./Site Coverage | ||||
F.A.R. | 0.35 | 0.35 | 0.50 | 0.70 |
Site Coverage | 40% | 40% | 60% | 60% |
Open Space | ||||
Commercial | N.A. | N.A. | N.A. | 7 – 11% of site |
Residential: Common | N.A. | N.A. | 300 sq. ft. per unit | 300 sq. ft. per unit, any combination of shared or private. |
Residential: Private | N.A. | N.A. | 75 – 225 sq. ft. per unit | |
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | |||
Primary Structure | 30 ft. | |||
Notes:
1.Front porches may extend up to 10 feet into front setback (or street-side setback for wrap-around porches).
2.Measured at building wall, not ridge.
Table 3-13. Northwest Area: Subdivisions of 5+ Lots
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | |||
|---|---|---|---|---|
R-L | R-S | R-M | MX | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | |||
Front/Street-side1 | 20 ft. | 20 ft. | One-story: 15 ft. Two-story: 20 ft. | 15 ft. |
Side: | 5 ft. minimum, 15 ft. combined | 5 ft. minimum, 15 ft. combined | 5 ft. minimum, 15 ft. combined | None required, except when abutting a residential zone, in which case the corresponding setback in the residential zone shall apply. |
Side: | 2 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,2 in addition to the normal requirement for one-story structures. | 2 ft. for every 5 ft. (or fraction thereof) of height above 20 ft.,2 in addition to the normal requirement for one-story structures. | ||
Rear | 20 ft. | 20 ft. | One-story: 15 ft. Two-story: 20 ft. | |
Garage: | 5 ft. from the front of primary structure | 20 ft. from the front of primary structure | 20 ft. from the front of primary structure | N.A. |
F.A.R./Site Coverage | ||||
F.A.R. | 0.35 | 0.35 | 0.50 | 0.70 |
Site Coverage | 40% | 40% | 60% | 60% |
Open Space | ||||
Commercial | N.A. | N.A. | N.A. | 7 – 11% of site |
Residential: Common | N.A. | N.A. | 300 sq. ft. per unit, | 300 sq. ft. per unit, any combination of shared or private |
Residential: Private | N.A. | N.A. | 75 – 225 sq. ft. per unit | |
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | |||
Primary Structure | 30 ft. | |||
Notes:
1.Front porches may extend up to 10 feet into front setback (or street-side setback for wrap-around porches).
2.Measured at building wall, not ridge.
A. Existing Conditions. The Central-West planning area is large, at 297 acres, and contains a variety of housing types, including low density single-family, mobile home parks, duplexes and fourplexes, as well as large-scale multifamily developments. Sonoma Creek, on the west, represents the area’s most distinct boundary. The West Napa/Sonoma Highway commercial corridor lies to the north, the Downtown district and Broadway to the east, and rural development within the Southwest planning area to the south. The development of this area is recent in terms of the city’s overall history, with the oldest tracts dating back to the 1950s. Within single-family areas, front setbacks tend to be quite consistent (20 feet, usually), less so in the multifamily sections. Most of the streets are developed with monolithic sidewalks rather than planter strips. The major streets within the Central-West area form a grid, continued by some local streets and ignored by others.
Existing land uses include:
1. Low density single-family homes;
2. Two mobile home parks;
3. Multifamily development, including duplexes, triplexes and fourplexes, condominiums, and apartments;
4. Two congregate care facilities;
5. A neighborhood park (Hertenstein Park);
6. Sassarini Elementary School;
7. A hospital; and
8. A small shopping center.
B. Desired Future. The general objective for this area, as expressed in SMC 19.26.020, is to ensure that new infill developments respect their immediate context. Single-family areas should remain single-family with regular setbacks and development in multifamily areas, while having greater flexibility in site design and massing, should clearly respond to conditions on adjacent parcels. Otherwise, the mini-neighborhoods within the planning area risk losing their distinctiveness. In the development or redevelopment of properties on the edge of the planning area, particularly adjacent to the West Napa Street corridor, uses should be laid out to minimize potential conflicts with adjacent commercial development, while maximizing appropriate connections. In order to preserve the city’s largest stock of affordable senior housing, the regular maintenance of the mobile home parks’ grounds and of the individual coaches should be encouraged.
C. Potential Changes. The need for street improvements within the area is limited mainly to traffic calming and pedestrian safety improvements, such as safety improvements to the bike path crossing on West MacArthur Street. Hayes Street, between Bettencourt Street and West MacArthur Street, will ultimately be improved to a full width as adjoining properties develop. In the long term, intersection improvements may be needed at Fifth Street West/Andrieux Street and Fifth Street West/West MacArthur Street. Although a significant environmental feature, Sonoma Creek is largely inaccessible within the planning area, but a bike/pedestrian connection has been developed along it between Oregon Street and Napa Road. The Fryer Creek bike/walking path should be extended, if possible, to connect with Second Street West. Throughout the planning area, gaps in the sidewalks and in street tree plantings need to be filled. (Ord. 2003-02 § 3, 2003).
A. Site Planning Standards.
1. Residential Density. The following residential densities and minimum lot sizes apply to new subdivisions within different zoning districts in the Central-West planning area.
Table 3-14. Lot Size and Residential Density Requirements
Zoning District | Number of Dwellings Per Parcel1 | Minimum Lot Size |
|---|---|---|
R-L | 2 per acre minimum; | 7,500 sq. ft. |
R-S | 3 per acre minimum; | 5,000 sq. ft. |
R-P | 7 per acre maximum | 10 acres |
R-M | 7 per acre minimum; | 4,500 sq. ft. |
R-H | 15 per acre maximum | 3,500 sq. ft. |
C | 20 per acre maximum | 10,000 sq. ft. |
Notes:
1.Densities do not include density bonus. See Chapter 19.44 SMC.
Table 3-15. Central-West Area: Infill and Additions
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | |||||
|---|---|---|---|---|---|---|
R-P | R-L | R-S | R-M | R-H | C | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | |||||
Front/Street-side1 | 20 ft. | 20 ft. | 20 ft. | One-story: 15 ft. Two-story: 20 ft. | 15 ft. | One-story: 15 ft. Two-story: 20 ft. |
Side: | 10 ft. | 5 ft. minimum, 15 ft. combined | 5 ft. minimum, 12 ft. combined | None required, except when abutting a residential zone, in which case the corresponding setback in the residential zone shall apply. | ||
Side: | 20 ft. | 2 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,2 in addition to the normal requirement for one-story structures. | 2 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,2 in addition to the normal requirement for one-story structures. | |||
Rear | 20 ft. | 20 ft. | 20 ft. | One-story: 15 ft. Two-story: 20 ft. | One-story: 12 ft. Two-story: 15 ft. | |
Garage: | N.A. | 5 ft. from the front of the primary structure | 20 ft. from the front of the primary structure | 20 ft. from the front of the primary structure | 20 ft. from the front of the primary structure | N.A. |
F.A.R./Site Coverage | ||||||
F.A.R. | 0.30 | 0.35 | 0.35 | 0.45 | 0.70 | 0.80 |
Site Coverage | 35% | 40% | 40% | 50% | 60% | 60% |
Open Space | See SMC 19.40.070 for design requirements. | |||||
Commercial | N.A. | N.A. | N.A. | N.A. | N.A. | 7 – 11% of site |
Residential: Common | N.A. | N.A. | N.A. | 300 sq. ft. per unit | 300 sq. ft. per unit | 300 sq. ft. per unit, any combination of shared or private |
Residential: Private | N.A. | N.A. | N.A. | 75 – 225 sq. ft. per unit | 75 – 225 sq. ft. per unit | |
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | |||||
Primary Structure | 30 ft. | |||||
Notes:
1.Front porches may extend up to 10 feet into front setback (or street-side setback for wrap-around porches).
2.Measured at building wall, not ridge.
Table 3-16. Central-West Area: Subdivisions of 5+ Lots
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | |||
|---|---|---|---|---|
R-L | R-S | R-M | R-H | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | |||
Front/Street-side1 | A variety of setbacks, compatible with neighborhood conditions, shall normally be required at the discretion of the planning commission. An average setback of 25 feet shall be maintained. | One-story: 15 ft. Two-story: 20 ft. | 15 ft. | |
Side: | 5 ft. minimum, 15 ft. combined | As approved by the planning commission, except that in no case shall a setback of less than 3 ft. be allowed. | 5 ft. minimum, 12 ft. combined | |
Side: | 2 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,2 in addition to the normal requirement for one-story structures. | 2 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,2 in addition to the normal requirement for one-story structures. | ||
Rear | 20 ft. | 20 ft. | One-story: 15 ft. Two-story: 20 ft. | 15 ft. |
Garage: | 5 ft. from the front of the primary structure | 20 ft. from the front of the primary structure | Parking areas (including carports and garages) should normally be located along the sides and to the rear of a property and should be minimized or avoided in front of buildings. | |
F.A.R./Site Coverage | ||||
F.A.R. | 0.35 | 0.35 | 0.45 | 0.70 |
Site Coverage | 40% | 40% | 50% | 60% |
Open Space | See SMC 19.40.070 for design requirements. | |||
Commercial | N.A. | N.A. | N.A. | N.A. |
Residential: Common | N.A. | N.A. | 300 sq. ft. per unit | 300 sq. ft. per unit |
Residential: Private | N.A. | N.A. | 75 – 225 sq. ft. per unit | 75 – 225 sq. ft. per unit |
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | |||
Primary Structure | 30 ft. | |||
Notes:
1.Front porches may extend up to 10 feet into front setback (or street-side setback for wrap-around porches).
2.Measured at building wall, not ridge.
2. Setbacks, Site Coverage, and Open Space. Proposed development shall be designed and constructed in compliance with the requirements set forth in Tables 3-15 and 3-16, preceding.
3. Driveways and Parking. Parking areas for multifamily projects shall not be located in a front setback, but shall be provided at the rear or along the side of the site. Multifamily parking areas shall be screened from adjacent residential zoning districts and land uses. See Chapter 19.48 SMC, Parking and Loading Standards. Driveways along collector streets (West Spain Street, Fifth Street West, and Verano Avenue) shall be minimized when possible, by combining driveways, using alleys, or designing development so that access is provided from local streets.
4. Natural Features. Significant environmental amenities, including Sonoma Creek, Fryer Creek, the west fork of Fryer Creek, related riparian areas, and mature oak trees, shall be preserved by being incorporated into site plan design and layout. Appropriate enhancement or protective measures shall be included in plans where determined necessary by the planning commission. See landscaping standards and design guidelines (SMC 19.40.060), and the tree preservation ordinance for specific tree preservation requirements and guidelines. Environmental features of lesser significance should be incorporated into project site plans when appropriate if justified by the quality of the feature and its relation to the site.
5. Screening and Buffering. Multifamily developments shall require screening and buffering of parking and driveway areas, and noise and light sources (SMC 19.40.030). See Chapter 19.46 SMC, Fences, Hedges and Walls, and landscape standards and guidelines (SMC 19.40.060). A masonry wall may be required of any new development whose rear yard abuts a commercially zoned property.
B. Building Design.
1. Height and Profile. Proposed structures shall not exceed a maximum height of 30 feet. For structures in excess of 15 feet, side and rear setbacks shall be increased by two feet for each additional five feet in height. See the following design guidelines, and SMC 19.40.040 for height measurement and exceptions.
2. Building Types – Guidelines for Residential Structures. Proposed dwellings should be placed on their sites so that the most narrow dimension of the structure is parallel to the most narrow dimension of the parcel, and so that the primary entrance to the dwelling faces the public street, or is accessible from a porch or other entry element which faces the street.
C. Street and Block Layout. It is intended that streets within the Central-West planning area will be maintained at their existing width and alignment. (Ord. 02-2021 § 1(5), 2021; Ord. 03-2004 § 3, 2004; Ord. 2003-02 § 3, 2003).
A. Existing Conditions. The Southwest planning area, which is entirely residential, is marked by sharp contrasts between rural and urban development. Malet Street and Harrington Drive are rural enclaves, developed mainly with older residences. New residential development includes a single-family tract and a series of higher density tracts featuring detached units on small lots. The Southwest area is bounded by rural and agricultural lands outside of the city’s sphere of influence on the south and west, with the Broadway corridor and the gateway at Four Corners to the east, and urban residential development to the north. The Fryer Creek channel bisects the area. No east-west streets traverse the planning area (with the exception of Leveroni Road), due to the presence of the creek, but there is a bicycle/pedestrian connection at the southern end of the channel. This crossing connects bike/pedestrian pathways which run along either side of the channel, providing access to the two neighborhood parks within the planning area.
Existing land uses include:
1. Older, rural density single-family homes;
2. Single-family tract development;
3. Several planned developments;
4. Two neighborhood parks and a wetland preserve; and
5. Scattered vacant parcels, some of them relatively large.
B. Desired Future. The general objectives for this area are to preserve the Harrington and Malet Street areas as rural enclaves and to regulate additions and modifications to existing planned developments. Over time, the unincorporated areas of Malet Street and Harrington Drive will be annexed to the city so that the residents of those areas may have the benefit of reliable water and sewer service. However, these areas are intended to be preserved as pockets of rural development. New development within these areas and future public improvements should be consistent with that goal. Existing and planned single-family developments within the planning area will inevitably contrast with adjacent rural areas. While the general character of development within these areas will be that of urban density single-family residential, transitional design elements should be used, especially at street connections between urban and rural areas. The planned developments within the Southwest area were designed with little room for change. Additions and renovations will be greatly restricted due to the small lot sizes and narrow setbacks associated with these developments.
C. Intended Changes. Harrington Drive and Malet Street west of First Street West will require some level of upgrading, but street sections should reflect and reinforce the rural qualities of those areas. Elsewhere in the planning area, gaps in the sidewalk system need to be closed and, in the long term, sidewalks (with planter strips) will probably be extended along Fifth Street West and Leveroni Road. Except for a connection between Newcomb Street and Malet Street and possible improvements to the intersection of Fifth Street West and Leveroni Road, no major street improvements are planned. For health and safety reasons, water and sewer lines will have to be extended along Malet Street and, in the long term, along Fifth Street West and Leveroni Road. (Ord. 2003-02 § 3, 2003).
A. Site Planning Standards.
1. Residential Density. The following residential densities and minimum lot sizes apply to new subdivisions within the different zoning districts of the Southwest planning area.
Table 3-17. Lot Size and Residential Density Requirements
Zoning District | Number of Dwellings Per Parcel1 | Minimum Lot Size |
|---|---|---|
R-R | 2 per acre maximum | 20,000 sq. ft. |
R-L | 2 per acre minimum; | 7,500 sq. ft. |
R-S | 3 per acre minimum; | 7,500 sq. ft. |
R-M | 7 per acre minimum; | 6,000 sq. ft. |
Notes:
1.Densities do not include density bonus. See Chapter 19.44 SMC.
2. Setbacks, Site Coverage, and Open Space. Proposed development shall be designed and constructed in compliance with the requirements set forth in Table 3-18, following.
Table 3-18. Southwest Area: Infill, Additions and Replacement Structures
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | |||
|---|---|---|---|---|
R-R | R-L | R-S | R-M | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | |||
Front/Street-side1 | One-story: 20 ft. Two-story:2 30 ft. | One-story: 20 ft. Two-story:2 30 ft. | 20 ft. | 20 ft. |
Side: | 15 ft. | 15 ft. | 5 ft. minimum, 12 ft. combined | 5 ft. minimum, 12 ft. combined |
Side: | 15 ft. | 15 ft. | 2 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,2 in addition to the normal requirement for one-story structures. | 2 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,2 in addition to the normal requirement for one-story structures. |
Rear | 30 ft. | 30 ft. | 20 ft. | 20 ft. |
Garage: | 20 ft. from the front of the primary structure | 20 ft. from the front of the primary structure | 5 ft. from the front of the primary structure | 20 ft. from the front of the primary structure |
F.A.R./Site Coverage | ||||
F.A.R. | 0.20 | 0.35 | 0.35 | 0.45 |
Site Coverage | 25% | 40% | 40% | 50% |
Open Space | See SMC 19.40.070 for design requirements. | |||
Residential: Common | N.A. | N.A. | N.A. | N.A. |
Residential: Private | N.A. | N.A. | N.A. | N.A. |
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | |||
Primary Structure | 30 ft. | |||
Notes:
1.Front porches may extend up to 10 feet into front setback (or street-side setback for wrap-around porches).
2.Measured at wall, not ridge.
3. Driveways and Parking. Parking areas for multifamily projects shall not be located in a front setback, but shall be provided at the rear or along the side of the site. Multifamily parking areas shall be screened from adjacent residential zoning districts and land uses. See Chapter 19.48 SMC, Parking and Loading Standards. Driveways along collector streets (Fifth Street West, Leveroni Road) shall be minimized when possible, by combining driveways, using alleys, or designing development so that access is provided from local streets.
4. Natural Features. Significant environmental amenities, including Fryer Creek and associated riparian areas, wetlands, and mature oak trees, shall be preserved by being incorporated into site plan design and layout. Appropriate enhancement or protective measures shall be included in plans where determined necessary by the planning commission. See landscaping standards and design guidelines (SMC 19.40.060), and the tree preservation ordinance for specific tree preservation requirements and guidelines. Environmental features of lesser significance should be incorporated into project site plans when appropriate if justified by the quality of the feature and its relation to the site.
5. Screening and Buffering. Multifamily developments shall require screening and buffering of parking and driveway areas, and noise and light sources. See Chapter 19.46 SMC, Fences, Hedges and Walls, and landscape standards and guidelines (SMC 19.40.060).
B. Building Design.
1. Height and Profile. Proposed structures shall not exceed a maximum height of 30 feet. For structures in excess of 15 feet, side and rear setbacks shall be increased by two feet for each additional five feet in height. See the following design guidelines, and SMC 19.40.040 for height measurement and exceptions.
2. Building Types – Guidelines for Residential Structures. Proposed dwellings should be placed on their sites so that the most narrow dimension of the structure is parallel to the most narrow dimension of the parcel, and so that the primary entrance to the dwelling faces the public street, or is accessible from a porch or other entry element which faces the street.
C. Street and Block Layout. It is intended that streets within the Southwest planning area will be maintained at their existing width and alignment with the following exceptions:
1. Malet Street. West of First Street West, Malet Street should be maintained in a rural configuration; however, for safety reasons, it will need to be widened in some areas to provide a consistent two-lane section.
2. Harrington Drive. Harrington Drive should be maintained as a rural street, but widening in some areas may be needed to achieve a safe two-lane section. (Ord. 02-2021 § 1(6), 2021; Ord. 03-2004 § 3, 2004; Ord. 2003-02 § 3, 2003).
A. Existing Conditions. Although the Gateway commercial district encompasses only 59 acres, its future development is crucial to the identity of Sonoma. It forms the southern entrance to the city and marks the division between the rural and agricultural character of the unincorporated area and the urban features of the city. The district is bounded by existing and planned multifamily development to the west and north, rural residential, agricultural, and vacant parcels to the south, and Nathanson Creek to the east. Broadway and Napa/Leveroni Road divide the district into quarters.
Existing land uses include:
1. Single-family homes on large lots;
2. A hardware and garden supply center;
3. A hotel;
4. A local market, and small car repair shop, a furniture store, and a mixed use building;
5. A PG&E substation;
6. A vineyard;
7. Traintown (a large, landscaped recreation facility); and
8. Vacant parcels, totaling more than 15 acres.
B. Desired Future. The Gateway district should provide an attractive and distinctive entrance to Sonoma. In terms of uses, the Gateway district should provide a mix of resident- and visitor-serving uses, along with a substantial residential component. The district should complement, not compete with, the Plaza, and should provide shopping and service opportunities for existing and future residential development in southern Sonoma. In terms of site planning, architecture, and landscaping, new development and redevelopment should draw from the best examples of Sonoma. Existing local serving uses within the district should be retained and encouraged to upgrade in keeping with the overall goals for the area.
The development of the Gateway district will contrast with the rural and agricultural lands of the unincorporated territory to the south, east and west. Design sensitivity will be needed to make this contrast pleasing rather than jarring. Larger setbacks and lower building heights are appropriate at the edge properties of the district, with smaller setbacks and higher buildings at the core. It is expected that the hotel at the northwest quadrant of the district will anchor other visitor-serving uses and encourage the improvement of other properties in the area.
Pedestrians must be better served – by extending sidewalks with planter strips along major roads, by reducing driveway cuts, and by requiring pedestrian pathways and connections in new development. A street tree planting program should be developed and implemented in conjunction with frontage improvements.
C. Potential Changes. In terms of road improvements, the southernmost segment of Broadway within the Gateway district will ultimately be widened to three lanes. Napa and Leveroni Road may not need to be widened, but shoulder improvements will be necessary in some areas, as well as turn-pockets. The intersection of Broadway and Napa/Leveroni Road will need to be improved with landscaping, sidewalks, and crosswalks. (Ord. 2003-02 § 3, 2003).
A. Site Planning Standards.
1. Residential Density. The following residential densities and minimum lot sizes apply to new subdivisions within the Gateway district.
Table 3-19. Lot Size and Residential Density Requirements
Zoning District | Number of Dwellings Per Parcel1 | Minimum Lot Size |
|---|---|---|
C-G | 20 per acre maximum | 10,000 sq. ft. |
Notes:
1.Densities do not include density bonus. See Chapter 19.44 SMC.
2. Setbacks, Site Coverage, and Open Space. Proposed development shall be designed and constructed in compliance with the requirements set forth in Tables 3-20 and 3-21, following.
3. Driveways and Parking. Parking areas should be located at the rear or along the side of properties and should be discouraged in front of buildings. Parking areas shall be screened from adjacent residential zoning districts and land uses. See Chapter 19.48 SMC, Parking and Loading Standards. Driveways along collector streets (Broadway, Napa Road, Leveroni Road) shall be minimized when possible, by combining driveways, using alleys, or designing development so that access is provided from local streets.
Table 3-20. Gateway District: Additions and Renovations
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | |
|---|---|---|
Edge Properties (C-G) | Core Properties (C-G) | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | |
Front/Street-side1 | 20 ft. or consistent with existing structure | None required |
Side | None required, except 1) when abutting a residential zone, in which case the corresponding setback in the residential zone shall apply; 2) when abutting the sphere of influence, in which case a 20 ft. setback is required. | None required |
Rear | None required, except when abutting a residential zone or the sphere of influence, in which case a 20 ft. setback is required. | None required |
Parking | Garages shall be set back 20 feet from the main structure. Parking areas should normally be located along the sides and to the rear of a property and should be minimized or avoided in front of buildings. For the expansion or renovation of existing parking areas subject to planning approval, the review authority may require additional landscaping and/or the consolidation of driveway cuts. | |
F.A.R./Site Coverage | ||
F.A.R. | 0.80 | |
Site Coverage | 40% | |
Open Space | ||
Commercial | 7% – 11% of site | |
Residential | 300 sq. ft. per unit (any combination of shared or private) | |
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | |
Primary Structure | 30 ft. | 35 ft. |
Notes:
Table 3-21. Gateway District: New Development
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | |
|---|---|---|
Edge Properties (C-G) | Core Properties (C-G) | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | |
Front/Street-side1 | Broadway: 30 feet Napa/Leveroni: 20 feet Interior drives: None required. | None required |
Side | None required, except 1) when abutting a residential zone, in which case the corresponding setback in the residential zone shall apply; 2) when abutting the sphere of influence, in which case a 20 ft. setback is required. | None required |
Rear | None required, except when abutting a residential zone or the sphere of influence, in which case a 20 ft. setback is required. | None required |
Parking | Garages shall be set back 20 feet from the main structure. Parking areas should normally be located along the sides and to the rear of a property and should be minimized or avoided in front of buildings. For the expansion or renovation of existing parking areas subject to planning approval, the review authority may require additional landscaping and/or the consolidation of driveway cuts. | |
F.A.R./Site Coverage | ||
F.A.R. | 0.80 | |
Site Coverage | 40% | |
Open Space | ||
Commercial | 7% – 11% of site | |
Residential | 300 sq. ft. per unit (any combination of shared or private) | |
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | |
Primary Structure | 30 ft. | 35 ft. |
Notes:
4. Natural Features. Significant environmental amenities, including Nathanson Creek, related riparian areas, and mature oak trees, shall be preserved by being incorporated into site plan design and layout. Appropriate enhancement or protective measures shall be included in plans where determined necessary by the planning commission. See landscaping standards and design guidelines (SMC 19.40.060), and the tree preservation ordinance for specific tree preservation requirements and guidelines. Environmental features of lesser significance should be incorporated into project site plans when appropriate if justified by the quality of the feature and its relation to the site.
5. Screening and Buffering. Multifamily developments shall require screening and buffering of parking and driveway areas, and noise and light sources. See Chapter 19.46 SMC, Fences, Hedges and Walls, and landscape standards and guidelines (SMC 19.40.060).
B. Building Design.
1. Height and Profile. Proposed structures in the core area shall not exceed a maximum height of 35 feet. Outside of the core area the maximum building height shall be 30 feet. See SMC 19.40.040 for height measurement and exceptions.
2. Building Types – Guidelines for Commercial, Mixed Use and Multifamily Residential Structures. New construction and alterations to existing structures should be designed to establish the Four Corners area as a distinctive gateway to Sonoma. In reviewing proposals for new development and redevelopment, the review authority shall make use of the following guidelines:
a. Site and building design should enhance the streetscape. Primary building entrances, especially for commercial uses, should be oriented toward the street and accessible from the sidewalk.
b. Allow existing uses to remain and, subject to use permit review, to expand or intensify, in conformance with the provisions of this development code (see Chapter 19.82 SMC, Nonconforming Structures, Uses and Parcels).
c. Encourage pedestrian connections between developments and to adjoining residential areas.
d. Site design and architectural features that contribute to pedestrian comfort and interest, such as awnings, recessed entrances, arcades, courtyards, paseos, alleys, and patios, are encouraged.
e. The massing of larger buildings (5,000 square feet or greater) should be broken down to an appropriate scale through the use of storefronts and breaks in the facade.
f. Architectural styles and details traditional to Sonoma should be used. The use of durable, high quality materials is encouraged. Industrial and strip building types and materials (e.g., concrete tilt-up structures) are not appropriate to the Gateway district.
g. Encourage variety in building design features (e.g., height, articulation, shape, and mass) in order to enhance visual diversity, preserve scenic vistas, and avoid strip-style development.
h. Building types, architectural details and signs having a generic or corporate appearance are strongly discouraged. Chain stores and franchises are not prohibited in the Gateway district, but such uses must respect and contribute to the importance of the area as the front door to Sonoma.
i. Development along the sphere of influence should provide a clear and suitable transition to adjacent rural areas in terms of site design, architecture and landscaping. Buildings should take advantage of outward views.
j. In the core area, promote high-intensity uses and place buildings close to the street (zero to 15 feet). Encourage the use of two-story buildings. (Ord. 10-2025 § 2 (Exh. A), 2025; Ord. 02-2021 § 1(7), 2021; Ord. 06-2013 § 3, 2013; Ord. 03-2004 § 3, 2004; Ord. 2003-02 § 3, 2003).
A. Existing Conditions. Connecting the southern gateway to the downtown, the Broadway corridor possesses considerable historic, visual, and functional significance. Historically, Broadway completes the Camino Real or “Royal Road” of Spanish/Mexican mission settlements. Visually, Broadway provides a grand entrance to downtown Sonoma with its axial view of the Plaza, City Hall, and the northern hills, its 110-foot right-of-way, and its procession of street trees. Functionally, Broadway is a segment of State Route 12 and is a major traffic arterial. The Broadway corridor is flanked by residential areas, with Nathanson Creek forming its eastern edge and First Street West its western boundary. Parcels along Broadway tend to be long and narrow (to widths of 50 feet) and some have double frontages.
North of MacArthur Street, Broadway possesses a clear visual organization defined by historic structures with landscaped front yards and generally regular setbacks, street trees, and a consistent street width. South Broadway, in contrast, features a patchwork of older (but not historic) commercial buildings, new commercial and multifamily residential development, historic single-family homes and remnant agricultural buildings. These uses are interspersed with vacant parcels. However, the dominant use on South Broadway, in terms of area, appearance, and intensity, is the high school. Street improvements along South Broadway are inconsistent.
Existing land uses include:
1. Retail, office and mixed use, often in adaptively reused historic buildings;
2. Single-family residences;
3. Duplexes, apartments, and small multifamily development;
4. A hotel;
5. The Sonoma Valley High School and the Adele Harrison Middle School;
6. A nursing home; and
7. Scattered vacant parcels.
B. Desired Future. Historic structures on Broadway will be preserved, restored and re-used, while new development will respect and contribute to the character of the area. Mixed use development will be directed so as to retain the predominantly residential character of First Street West while enlivening Broadway with small-scale retail, office, and residential uses. With respect to the high school and the middle school, careful placement of playing fields, parking and school uses will be required in order to assure compatibility with neighboring residential areas.
C. Potential Changes. South of MacArthur Street, Broadway will be improved to a consistent configuration. Gaps in the sidewalk system and street tree plantings will be closed. Intersection improvements may ultimately be needed at Broadway/Andrieux Street. With the expansion of the high school, its main entrance has been aligned with Newcomb Street and a traffic signal has been installed at that intersection. The gains in pedestrian safety associated with this improvement will only be fully realized if the high school frontage is redesigned to prevent pedestrians from crossing at the Malet Street intersection. (Ord. 2003-02 § 3, 2003).
A. Site Planning Standards.
1. Residential Density. The following residential densities and minimum lot sizes apply to new subdivisions within the different zoning districts of the Broadway corridor:
Table 3-22. Lot Size and Residential Density Requirements
Zoning District | Number of Dwellings Per Parcel1 | Minimum Lot Size |
|---|---|---|
C | 20 per acre maximum | 8,000 sq. ft. |
MX | 20 per acre maximum | 8,000 sq. ft. |
Notes:
1.Densities do not include density bonus. See Chapter 19.44 SMC.
2. Setbacks, Site Coverage, and Open Space. Proposed development shall be designed and constructed in compliance with the requirements set forth in Tables 3-23 and 3-24, following.
Table 3-23. Broadway Corridor: Additions and Replacement Structures
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | |
|---|---|---|
C | MX | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | |
Front/Street-side1 | Replacement structures: The same location as the original structure.2 Additions to existing structures: 15 ft. | Replacement structures: The same location as the original structure.2 Additions to existing structures: 20 ft. |
Side: | None required, except when abutting a residential zone, in which case the corresponding setback in the residential zone shall apply. | 5 ft. minimum, 15 ft. combined |
Side: | 2 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,3 in addition to the normal requirement for one-story structures. | |
Rear | 15 ft., except when abutting a residential zone, in which case the corresponding setback in the residential zone shall apply. | |
Parking | Garages shall be set back 20 feet from the main structure. Parking areas should normally be located along the sides and to the rear of a property and should be minimized or avoided in front of buildings. | |
F.A.R./Site Coverage | ||
F.A.R. | 0.60 | 1.0 |
Site Coverage | 60% | 60% |
Open Space | See SMC 19.40.070 for design requirements. | |
Commercial | 7% – 11% of site | 7% – 11% of site |
Residential | 300 sq. ft. per unit (any combination of shared or private) | 300 sq. ft. per unit (any combination of shared or private) |
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | |
Primary Structure | 30 ft. | 30 ft. |
Notes:
1.A front porch may extend up to 10 feet into front setback (or street-side setback for wrap-around porches).
2.A replacement structure shall not exceed 10 percent of the height or area of the original structure unless a use permit is obtained.
3.Measured at wall, not ridge.
Table 3-24. Broadway Corridor: New Development
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | |
|---|---|---|
C | MX | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | |
Front/Street-side1 | 15 ft. or within the range of adjacent structures on either side. | |
Side: One-Story | None required, except when abutting a residential zone, in which case the corresponding setback in the residential zone shall apply. | 5 ft. minimum, 15 ft. combined |
Side: Two-Story | 2 ft. for every five ft. (or fraction thereof) of height above 15 ft.,2 in addition to the normal requirement for one-story structures. | |
Rear | 15 ft., except when abutting a residential zone, in which case the corresponding setback in the residential zone shall apply. | |
Parking | Garages shall be set back 20 ft. from the main structure. Parking areas should normally be located along the sides and to the rear of a property and should be minimized or avoided in front of buildings. | |
F.A.R./Site Coverage | ||
F.A.R. | 0.60 | 1.0 |
Site Coverage | 60% | 60% |
Open Space | See SMC 19.40.070 for design requirements. | |
Commercial | 7% – 11% of site | 7% – 11% of site |
Residential | 300 sq. ft. per unit (any combination of shared or private) | 300 sq. ft. per unit (any combination of shared or private) |
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | |
Primary Structure | 30 ft. | 30 ft. |
Notes:
1.A front porch may extend up to 10 feet into front setback (or street-side setback for wrap-around porches).
2.Measured at wall, not ridge.
3. Driveways and Parking. Parking areas should be located at the rear or along the side of properties and should be discouraged in front of buildings. Parking areas shall be screened from adjacent residential zoning districts and land uses. See Chapter 19.48 SMC, Parking and Loading Standards. Driveways along Broadway shall be minimized when possible, by combining driveways, using alleys, or designing development so that access is provided from local streets.
4. Natural Features. Natural environmental amenities including creeks, streams and other drainage courses; and mature trees shall be preserved by being incorporated into site plan design and layout. Appropriate enhancement or protective measures shall be included in plans where determined necessary by the planning commission. See creek development (SMC 19.40.020) and landscaping standards and design guidelines (SMC 19.40.060), and the tree preservation ordinance for specific tree preservation requirements and guidelines.
5. Screening and Buffering. Multifamily developments shall require screening and buffering of parking and driveway areas, and noise and light sources. See Chapter 19.46 SMC, Fences, Hedges and Walls, and landscape standards and guidelines (SMC 19.40.060).
B. Building Design.
1. Height and Profile. Proposed structures shall not exceed a maximum height of 30 feet. For structures in excess of 15 feet located within the MX zone, side setbacks shall be increased by two feet for each additional five feet in height. See SMC 19.40.040 for height measurement and exceptions.
2. Building Types – Guidelines for Residential Structures. Proposed dwellings should be placed on their sites so that the narrow dimension of the structure is parallel to the narrow dimension of the parcel, and so that the primary entrance to the dwelling faces the public street, or is accessible from a porch or other entry element which faces the street.
3. Building Types – Guidelines for Commercial and Mixed Use Structures. New commercial and mixed use buildings and alterations to existing structures should contribute to the established Broadway streetscape. In reviewing proposals for commercial and mixed development and redevelopment, the review authority shall make use of the following guidelines:
a. Proposed dwellings should be placed on their sites so that the narrow dimension of the structure is parallel to the narrow dimension of the parcel, and so that the primary entrance to the building faces the public street.
b. Buildings should reinforce the scale, massing, proportions and detailing established by other significant historic buildings in the vicinity (if any).
c. The massing of larger commercial and mixed use buildings (5,000 square feet or greater) should be broken down to an appropriate scale through the use of storefronts and breaks in the facade.
d. Architectural styles and details that reflect the Sonoma vernacular should be used. Along Broadway, Victorian and other residential architectural styles are more typical than purely commercial building types. The use of durable, high quality materials is encouraged.
e. Site design and architectural features that contribute to pedestrian comfort and interest, such as awnings, recessed entrances, and alleys, are encouraged.
f. In renovations involving historic buildings, authentic architectural details should be preserved and any new detailing and materials should be compatible with those of the existing structure. Pre-existing alterations that diminish a building’s historic qualities should be removed when the opportunity arises. (See Chapter 19.42 SMC, Historic Preservation and Infill in the Historic Zone.)
g. Building types, architectural details and signs having a generic or corporate appearance are strongly discouraged. Chain stores and franchises are not prohibited along Broadway, but such uses must respect and contribute to the historic qualities of the area in terms of building design and signs. (Ord. 10-2025 § 2 (Exh. A), 2025; Ord. 02-2021 § 1(8), 2021; Ord. 06-2013 § 3, 2013; Ord. 03-2004 § 3, 2004; Ord. 2003-02 § 3, 2003).
A. Existing Conditions. The Downtown district is the heart of Sonoma. The district centers on the Plaza and the historic downtown, collectively designated as a National Historic Landmark. The Sonoma Plaza is an eight-acre park, framed by historic buildings, with City Hall at its center. The downtown encompasses a lively concentration of small businesses, including restaurants, bookstores, specialty retail, and offices. A cluster of historically significant buildings on the north side of the district, including the mission and the barracks, are managed as a state park. Outside of the original downtown area, the western portion of the district contains a mix of single-family, multifamily, retail, and office development, including a modern shopping center. Multifamily development lies at the northwest and southeast edges of the district.
Existing land uses include:
1. The Sonoma Plaza and City Hall;
2. Retail uses, offices and apartments in historic buildings;
3. Restaurants, cafes, bakeries, and delicatessens;
4. Hotels;
6. Modern retail and office development;
7. A shopping center;
8. Condominiums, apartments, and PUDs; and
9. Older single-family development.
B. Desired Future. The primary objectives for the Downtown district are to preserve and enhance its historic character and to retain and promote its economic vitality as a commercial, cultural, and civic center attractive to residents and visitors. New construction and new uses should build upon the established character of the downtown. High quality architecture, pedestrian-friendly design, and uses which draw locals as well as tourists are reasonable expectations for Sonoma’s most distinctive district. While commercial uses will remain preeminent, the downtown’s housing stock should be preserved and extended. Multifamily and live-work development in the town center provide customers for downtown businesses and reduce automobile dependence. Higher density residential development at the edges of the district confers similar benefits and establishes a transition to lower density residential areas.
Many locals prefer to walk to the Plaza rather than drive, a choice which should be made as convenient and enjoyable as possible. Pedestrian amenities and connections should be extended throughout the district. The continued development of readily accessible off-street parking is also needed, as by choice or necessity, many visitors, local shoppers, and those who live or work in the downtown area will drive. In developing new parking or renovating existing parking, the creation of driveway connections between parking areas and pedestrian connections to commercial destinations should be emphasized.
C. Potential Changes. Opportunities to create additional off-street parking should be pursued and interior connections between existing off-street parking lots should be created. A pedestrian path linking the Plaza with Depot Park and with the Sonoma Overlook Trail is planned in conjunction with improvements to the Casa Grande parking lot and the Maysonnave property. Additional plantings are needed to fill gaps in the layout of street trees. In terms of traffic improvements, West Napa Street between First Street West and Second Street West may need to be reconfigured as a three-lane street section. The re-use or other disposition of the former fire station property on Broadway and Patten Street will need to be considered. (Ord. 2003-02 § 3, 2003).
A. Site Planning Standards.
1. Residential Density. The following residential densities apply to the zoning districts within the Downtown district:
Table 3-25. Lot Size and Residential Density Requirements
Zoning District | Number of Dwellings Per Parcel1 | Minimum Lot Size |
|---|---|---|
R-L | 2 per acre, minimum 5 per acre, maximum | 7,500 sq. ft. |
R-M | 7 per acre minimum 11 per acre maximum | 5,000 sq. ft. |
R-O | 25 per acre maximum | 4,500 sq. ft. |
MX | 20 per acre maximum | 7,000 sq. ft. |
C | 20 per acre maximum | 7,000 sq. ft. |
Notes:
1.Densities do not include density bonus. See Chapter 19.44 SMC.
Table 3-26. Downtown District: Additions and Replacement Structures
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | ||||
|---|---|---|---|---|---|
R-L | R-M | R-O | MX | C | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | ||||
Front/Street-side1 | In line with existing structure or 20 ft. | In line with existing structure or 15 ft. | None required | In line with existing structure or 15 ft. | None required |
Side: | 5 ft. minimum, 15 ft. combined | 5 ft. minimum, 15 ft. combined | 8 ft. | None required, except when abutting a residential zone, in which case the corresponding setback in the residential zone shall apply. | |
Side: | 2 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,2 in addition to the normal requirement for one-story structures. | 8 ft. | |||
Rear | 20 ft. | One-story: 15 ft. Two-story: 20 ft. | 12 ft. | None required | |
Garage: Front | Garages shall be set back 20 feet from the main structure (residential development). Parking areas should normally be located along the sides and to the rear of a property and should be minimized or avoided in front of buildings. For the expansion or renovation of existing parking areas subject to planning approval, the review authority may require additional landscaping and/or the consolidation of driveway cuts. | ||||
F.A.R./Site Coverage | |||||
F.A.R. | 0.35 | 0.50 | 0.70 | 1.20 | 2.0 |
Site Coverage | 40% | 60% | 65% | 70% | 100% |
Open Space | |||||
Commercial | N.A. | N.A. | N.A. | 25% of site | 10% of site |
Residential: Common | N.A. | 300 sq. ft. per unit | 300 sq. ft. per unit, any combination of shared or private | 250 sq. ft. per unit, any combination of shared or private | 200 sq. ft. per unit, any combination of shared or private |
Residential: Private | N.A. | 75 – 225 sq. ft. per unit | |||
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | ||||
Primary Structure | 30 ft. | 30 ft. | 30 ft. | 30 ft. | 35 ft. |
Notes:
1.Front porches may extend up to 10 feet into front setback (or street-side setback for wrap-around porches).
2.Measured at building wall, not ridge.
Table 3-27. Downtown District: New Development
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | ||||
|---|---|---|---|---|---|
R-L | R-M | R-O | MX | C | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | ||||
Front/Street-side1 | 20 ft. | 10 ft. | None required | 10 ft. | None required |
Side: | 5 ft. minimum, 15 ft. combined | 5 ft. minimum, 15 ft. combined | 8 ft. | None required, except when abutting a residential zone, in which case the corresponding setback in the residential zone shall apply. | |
Side: | 2 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,2 in addition to the normal requirement for one-story structures. | 8 ft. | |||
Rear | 20 ft. | One-story: 15 ft. Two-story: 20 ft. | 12 ft. | None required | |
Garage: Front | Garages shall be set back 20 feet from the main structure (residential development). Parking areas should normally be located along the sides and to the rear of a property and should be minimized or avoided in front of buildings. For the expansion or renovation of existing parking areas subject to planning approval, the review authority may require additional landscaping and/or the consolidation of driveway cuts. | ||||
F.A.R./Site Coverage | |||||
F.A.R. | 0.35 | 0.50 | 0.70 | 1.20 | 2.0 |
Site Coverage | 40% | 60% | 65% | 70% | 100% |
Open Space | |||||
Commercial | N.A. | N.A. | N.A. | 25% of site | 10% of site |
Residential: Common | N.A. | 300 sq. ft. per unit | 300 sq. ft. per unit, any combination of shared or private | 400 sq. ft. per unit, any combination of shared or private | 300 sq. ft. per unit, any combination of shared or private |
Residential: Private | N.A. | 75 – 225 sq. ft. per unit | |||
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | ||||
Primary Structure | 30 ft. | 30 ft. | 30 ft. | 30 ft. | 35 ft. |
Notes:
1.Front porches may extend up to 10 feet into front setback (or street-side setback for wrap-around porches).
2.Measured at building wall, not ridge.
2. Setbacks, Site Coverage, and Open Space. Proposed development shall be designed and constructed in compliance with the requirements set forth in Tables 3-26 and 3-27, preceding.
3. Driveways and Parking. Parking areas should be located at the rear or along the side of properties and should be discouraged in front of buildings. Parking areas shall be screened from adjacent residential zoning districts and land uses. See Chapter 19.48 SMC, Parking and Loading Standards. Throughout the district, driveway cuts shall be minimized when possible, by combining driveways, using alleys, or designing development so that access is provided from local streets.
4. Natural Features. Significant environmental amenities such as creeks, streams and other drainage courses, and mature trees, should be preserved by being incorporated into site plan design and layout. Appropriate enhancement or protective measures shall be included in plans where determined necessary by the planning commission. See creek setback (SMC 19.40.020) and landscaping standards and design guidelines (SMC 19.40.060), and the tree preservation ordinance for specific tree preservation requirements and guidelines.
5. Screening and Buffering. Multifamily developments shall require screening and buffering of parking and driveway areas, and noise and light sources. See Chapter 19.46 SMC, Fences, Hedges and Walls, and landscape standards and guidelines (SMC 19.40.060).
B. Building Design.
1. Height and Profile. Proposed structures shall not exceed a maximum height of 35 feet in the Commercial zoning district and 30 feet in the Mixed Use and R-O zoning districts, except that a 36-foot height may be allowed at the discretion of the planning commission for new developments that include a third floor residential component. Within the R-L, R-M, and P zoning districts, the maximum height shall be 30 feet. For structures in excess of 15 feet in the R-M and R-O districts, side and rear setbacks shall be increased by two feet for each additional five feet in height. See the following design guidelines, and SMC 19.40.040 for height measurement and exceptions.
2. Building Types – Guidelines for Residential Structures. Proposed dwellings should be placed on their sites so that the most narrow dimension of the structure is parallel to the most narrow dimension of the parcel, and so that the primary entrance to the dwelling faces the public street, or is accessible from a porch or other entry element which faces the street.
3. Building Types – Guidelines for Commercial and Mixed Use Structures. New commercial and mixed use buildings and alterations to existing structures should reinforce the authentic historic character of the downtown district. In reviewing proposals for commercial and mixed use development and redevelopment, the review authority shall make use of the following guidelines:
a. Buildings should reinforce the scale, massing, proportions and detailing established by other significant historic buildings in the vicinity (if any).
b. The massing of larger commercial and mixed use buildings (5,000 square feet or greater) should be broken down to an appropriate scale through the use of storefronts and breaks in the facade.
c. Architectural styles and details that reflect the Sonoma vernacular should be used. In the Downtown district, examples include stone, stucco, pressed metal, transoms, base tile, and glass block. The use of durable, high quality materials is encouraged.
d. Site design and architectural features that contribute to pedestrian comfort and interest, such as awnings, recessed entrances, paseos, alleys, and patios, are encouraged.
e. In renovations involving historic buildings, authentic details should be preserved and any new detailing and materials should be compatible with those of the existing structure. Pre-existing alterations that diminish a building’s historic qualities should be removed when the opportunity arises. (See Chapter 19.42 SMC, Historic Preservation and Infill in the Historic Zone.)
f. Building types, architectural details and signs having a generic or corporate appearance are strongly discouraged. Chain stores and franchises are not prohibited in the Downtown district, but such uses must respect and contribute to the historic qualities of the area in terms of building design and signs. (Ord. 10-2025 § 2 (Exh. A), 2025; Ord. 02-2021 § 1(9), 2021; Ord. 06-2013 § 3, 2013; Ord. 03-2004 § 3, 2004; Ord. 2003-02 § 3, 2003).
A. Existing Conditions. Located in west and northwest Sonoma, the West Napa Street/Sonoma Highway corridor is a commercial strip comprised of segments of State Highway 12. Beginning at West Napa Street/Third Street West, it extends westward along West Napa Street to Riverside Drive, then northward along the Sonoma Highway to Harley Street. Although it contains a wide variety of uses and building types, many of the blocks within the corridor present a pleasing appearance and exhibit a high degree of visual organization. The corridor is also punctuated by shopping centers with expansive parking lots, some only lightly landscaped, which break the rhythm established by smaller-scale development. Still other segments are more notable for their natural features and present a distinctly rural appearance (Sonoma Creek is a significant, if underutilized, natural amenity). Throughout the corridor, there are axial views of the hills surrounding Sonoma. West Napa Street and the Sonoma Highway are the city’s primary collectors and the corridor contains the most heavily travelled streets in Sonoma.
Existing land uses include:
1. Shopping centers of various sizes;
2. Smaller-scale modern commercial development, including banks and professional offices;
3. Small office and service uses in converted residences;
4. Three car dealerships and various other auto-related uses;
5. Restaurants, fast-food and otherwise;
6. Small multifamily developments and scattered single-family residences;
7. A mobile home park;
8. The Sonoma Valley Library; and
9. The St. Francis de Solano Church.
B. Desired Future. While fulfilling its role as a traffic artery, the West Napa Street/Sonoma Highway corridor should be upgraded visually and made kinder to pedestrians. Towards these ends, a program for filling gaps in the sidewalk and street tree system should be developed and implemented. When frontage improvements are required of new development and redevelopment, planter strips should be used rather than monolithic sidewalk. New development and redevelopment should incorporate any desirable site features, especially trees and existing buildings having a street presence. Driveway cuts should be minimized, especially through the use of shared access, and new parking should be located in the back of properties. Because much of the corridor backs onto residential development, site plan relationships must be carefully evaluated. Ideally, new commercial uses should be designed to relate to the extent feasible with adjacent residential development; at a minimum, adequate screening and buffering are required.
C. Intended Changes. The improvement of West Napa/Seventh Street West is necessary for safe pedestrian access to the library. Safety improvements are also needed at Sonoma Highway, where the bike path ends, in order to address unsafe pedestrian crossings in that area. It is projected that additional intersection improvements will be needed at West Napa Street/Fifth Street West and the county has expressed the intention of widening the Riverside Bridge and making adjustments to the West Napa/Sonoma Highway/Riverside intersection. Any improvements to that location should be viewed as an opportunity to beautify the intersection through additional landscaping. (Ord. 2003-02 § 3, 2003).
A. Site Planning Standards.
1. Residential Density. The following residential densities and minimum lot sizes apply to new subdivisions within different zoning districts in the West Napa/Sonoma Corridor:
Table 3-28. Lot Size and Residential Density Requirements
Zoning District | Number of Dwellings Per Parcel1 | Minimum Lot Size |
|---|---|---|
R-M | 7 per acre minimum 11 per acre maximum | 5,000 sq. ft. |
R-P | 7 per acre maximum | 10 acres |
MX | 20 per acre maximum | 8,000 sq. ft. |
C | 20 per acre maximum | 10,000 sq. ft. |
C-G | 20 per acre maximum | 10,000 sq. ft. |
Notes:
1.Densities do not include density bonus. See Chapter 19.44 SMC.
Table 3-29. Napa/Sonoma Corridor: Additions and Replacement Structures
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | ||||
|---|---|---|---|---|---|
R-P | R-M | MX | C | C-G | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | ||||
Front/Street-side1 | 20 ft. | One-story: 15 ft. Two-story: 25 ft. | |||
Side: | 10 ft. | 5 ft. minimum, 12 ft. combined | None required, except when abutting a residential zone, in which case the corresponding setback in the residential zone shall apply. | ||
Side: | 20 ft. | 2 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,2 in addition to the normal requirement for one-story structures | |||
Rear | 10 ft. | 15 ft., except when abutting the R-L zone, in which case a minimum 20 ft. setback is required. | None required | ||
Garage: Front | N.A. | Garages shall be set back 20 feet from the main structure (residential development). Parking areas should normally be located along the sides and to the rear of a property and should be minimized or avoided in front of buildings. For the expansion or renovation of existing parking areas subject to planning approval, the review authority may require additional landscaping and/or the consolidation of driveway cuts. | |||
F.A.R./Site Coverage | |||||
F.A.R. | 0.20 | 0.45 | 0.70 | 0.80 | 0.80 |
Site Coverage | 30% | 50% | 60% | 70% | 40% |
Open Space | |||||
Commercial | N.A. | N.A. | 7% – 11% of site | 7% – 11% of site | 7% – 11% of site |
Residential: Common | 300 sq. ft. per unit | 300 sq. ft. per unit, any combination of shared or private | 300 sq. ft. per unit, any combination of shared or private | 300 sq. ft. per unit, any combination of shared or private | |
Residential: Private | 75 – 225 sq. ft. per unit | ||||
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | ||||
Primary Structure | 30 ft. | ||||
Notes:
1.Front porches may extend up to 10 feet into front setback (or street-side setback for wrap-around porches).
2.Measured at building wall, not ridge.
Table 3-30. Napa/Sonoma Corridor: New Development
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | |||
|---|---|---|---|---|
R-M | MX | C | C-G | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | |||
Front/Street-side1 | One-story: 15 ft. Two-story: 25 ft. | |||
Side: | 5 ft. minimum, 12 ft. combined | None required, except when abutting a residential zone, in which case the corresponding setback in the residential zone shall apply. | ||
Side: | 2 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,2 in addition to the normal requirement for one-story structures. | |||
Rear | 15 ft., except when abutting the R-L zone, in which case a minimum 20 ft. setback is required. | None required | ||
Garage: Front | Garages shall be set back 20 feet from the main structure (residential development). Parking areas should normally be located along the sides and to the rear of a property and should be minimized or avoided in front of buildings. For the expansion or renovation of existing parking areas subject to planning approval, the review authority may require additional landscaping and/or the consolidation of driveway cuts. | |||
F.A.R./Site Coverage | ||||
F.A.R. | 0.45 | 0.70 | 0.80 | 0.80 |
Site Coverage | 50% | 60% | 70% | 40% |
Open Space | ||||
Commercial | N.A. | 7% – 11% of site | 7% – 11% of site | 7% – 11% of site |
Residential: Common | 25% | 300 sq. ft. per unit, any combination of shared or private | 300 sq. ft. per unit, any combination of shared or private | 300 sq. ft. per unit, any combination of shared or private |
Residential: Private | 400 sq. ft. per unit | |||
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | |||
Primary Structure | 30 ft. | |||
Notes:
1.Front porches may extend up to 10 feet into front setback (or street-side setback for wrap-around porches).
2.Measured at building wall, not ridge.
2. Setbacks, Site Coverage, and Open Space. Proposed development shall be designed and constructed in compliance with the requirements set forth in Tables 3-29 and 3-30, preceding.
3. Driveways and Parking. Parking areas for multifamily projects shall not be located in a front setback, but shall be provided at the rear or along the side of the site. Multifamily parking areas shall be screened from adjacent residential zoning districts and land uses. See Chapter 19.48 SMC, Parking and Loading Standards. Driveways along collector streets (West Spain Street, Fifth Street West, and Verano Avenue) shall be minimized when possible, by combining driveways, using alleys, or designing development so that access is provided from local streets.
4. Natural Features. Significant environmental amenities such as creeks, streams and other drainage courses, mature trees, and other natural features shall be preserved by being incorporated into site plan design and layout. Appropriate enhancement or protective measures shall be included in plans where determined necessary by the planning commission. See creek setback (SMC 19.40.020) and landscaping standards and design guidelines (SMC 19.40.060), and the tree preservation ordinance for specific tree preservation requirements and guidelines.
5. Screening and Buffering. Multifamily and commercial developments shall require screening and buffering of parking and driveway areas, and noise and light sources. See Chapter 19.46 SMC, Fences, Hedges and Walls, and landscape standards and guidelines (SMC 19.40.060).
B. Building Design.
1. Height and Profile. Proposed structures shall not exceed a maximum height of 30 feet. See SMC 19.40.040 for height measurement and exceptions.
2. Building Types – Guidelines for Residential Structures. Proposed dwellings should be placed on their sites so that the most narrow dimension of the structure is parallel to the most narrow dimension of the parcel, and so that the primary entrance to the dwelling faces the public street, or is accessible from a porch or other entry element which faces the street.
3. Building Types – Guidelines for Commercial and Mixed Use Structures. New commercial and mixed use buildings and alterations to existing structures should enhance the character of the West Napa Street/Sonoma Highway corridor and preserve significant historic elements. In reviewing proposals for commercial and mixed development and redevelopment, the review authority shall make use of the following guidelines:
a. Buildings should reinforce the scale, massing, proportions and detailing established by other significant historic buildings in the vicinity (if any).
b. The massing of larger commercial and mixed use buildings (5,000 square feet or greater) should be broken down to an appropriate scale through the use of storefronts and breaks in the facade.
c. Architectural styles and details that reflect the Sonoma vernacular should be used.
d. Site design and architectural features that contribute to pedestrian comfort and interest, such as awnings, recessed entrances, paseos, alleys, and patios, are encouraged.
e. Potential impacts on adjacent residential uses shall be considered and addressed through the site planning of new commercial and mixed use development.
f. In renovations involving historic buildings, authentic details should be preserved and any new detailing and materials should be compatible with those of the existing structure. Pre-existing alterations that diminish a building’s historic qualities should be removed when the opportunity arises. (See Chapter 19.42 SMC, Historic Preservation and Infill in the Historic Zone.)
g. Building types, architectural details and signs having a generic or corporate appearance are strongly discouraged. Chain stores and franchises are not prohibited in the West Napa Street/Sonoma Highway corridor, but such uses must enhance appearance of the area in terms of building design, landscaping, and signs. (Ord. 10-2025 § 2 (Exh. A), 2025; Ord. 02-2021 § 1(10), 2021; Ord. 06-2013 § 3, 2013; Ord. 03-2004 § 3, 2004; Ord. 2003-02 § 3, 2003).
A. Existing Conditions. The three open space districts are characterized by large areas of land in public ownership devoted to open space and recreational uses. The Maxwell district has an area of approximately 89 acres, all of which is owned by Sonoma County and dedicated to use as a regional park. The Maxwell Farms Regional Park encompasses a range of recreational uses, including playing fields, a Boys and Girls Club, and natural hiking areas.
The Vallejo district is dominated by the 57-acre Vallejo Home State Park. The historic buildings within this park are set off by expansive vistas. North of the park are several large, vacant parcels, currently used for grazing but having a zoning of Hillside Residential. Other uses within the district include a complex of city buildings (the police station and the city council chambers) and playing fields, a church, and a small amount of residential development.
The third open space district is comprised of the Mountain Cemetery. This city-owned property, which has an area of approximately 60 acres, has been developed with a historic public cemetery on the lower portion, with the remainder devoted to oak woodlands. The property is a key part of the hillside backdrop north of the city.
B. Desired Future. The general objective for the three districts is to preserve and enhance their value as public open space and recreational resources. A secondary objective for these districts is to maintain significant areas within the city with nonhardscape groundcovers to minimize increased quantities of urban runoff and downstream flooding.
C. Intended Changes. Maxwell Farms Regional Park will continue to be managed by the county department of parks and recreation. The city will maintain its partnership with the county to ensure that future improvements address valley recreational needs while preserving the unique environmental features of the park. Similarly, the city will continue to work with the State Parks Department to ensure that historic resources and open space values associated with the Vallejo Home State Park are preserved. If the privately owned hillside properties behind the park cannot be acquired as open space, the city will need to carefully monitor their development through its hillside regulations in order to minimize visual impacts on the backdrop.
Within the Cemetery district, the Old Mountain Cemetery will continue to be operated as a public cemetery and has recently been expanded to include a veterans’ component. The portion of the property that had been used as a landfill will be restored to a natural condition. Within the property, off of Norrbom Road, the development of a water tank has recently been completed. The tank site has been carefully selected to minimize visual impacts. It is intended that the upper portion of the property, which encompasses approximately 60 acres, will be preserved in its natural condition as an oak woodland, with public access provided through a hiking trail. Portions of this area which have been damaged by illegal four-wheel drive activity will be restored over time. (Ord. 05-2015 § 3, 2015; Ord. 2003-02 § 3, 2003).
A. Site Planning Standards.
1. Residential Density. The following residential densities and minimum lot sizes apply to new subdivisions within the different zoning districts of the open space planning areas:
Table 3-31. Lot Size and Residential Density Requirements
Zoning District | Number of Dwellings Per Parcel1 | Minimum Lot Size |
|---|---|---|
Pk | N.A.2 | N.A. |
P | N.A.2 | N.A. |
R-HS | 1 per 10 acres, maximum3 | 10 acres |
R-L | 2 per acre minimum; 5 per acre maximum | 7,500 sq. ft. |
Notes:
1.Densities do not include density bonus. See Chapter 19.44 SMC.
2.Caretaker’s residence may be allowed by use permit.
2. Setbacks, Site Coverage, and Open Space. Proposed development shall be designed and constructed in compliance with the requirements set forth in Table 3-32, following.
3. Driveways and Parking. Parking areas for public uses shall be appropriately landscaped and screened. See Chapter 19.48 SMC, Parking and Loading Standards. Driveways along collector streets shall be minimized when possible, by combining driveways, using alleys, or designing development so that access is provided from local streets.
4. Natural Features. Significant environmental amenities, including Sonoma Creek and associated riparian areas, wetlands, hillsides, and mature oak trees, shall be preserved by being incorporated into site plan design and layout. Appropriate enhancement or protective measures shall be included in plans where determined necessary by the planning commission. See landscaping standards and design guidelines (SMC 19.40.060), and the tree preservation ordinance for specific tree preservation requirements and guidelines. Environmental features of lesser significance should be incorporated into project site plans when appropriate if justified by the quality of the feature and its relation to the site.
B. Building Design.
1. Height and Profile. Proposed residential structures shall not exceed a maximum height of 30 feet. For structures in excess of 15 feet, side and rear setbacks shall be increased by two feet for each additional five feet in height. See the following design guidelines, and SMC 19.40.040 for height measurement and exceptions.
2. Building Types – Guidelines for Residential Structures. Proposed dwellings should be placed on their sites so that the most narrow dimension of the structure is parallel to the most narrow dimension of the parcel, and so that the primary entrance to the dwelling faces the public street, or is accessible from a porch or other entry element which faces the street.
C. Street and Block Layout. It is intended that streets within the open space districts will be maintained at their existing width and alignment.
Table 3-32. Open Space Districts: Infill and Additions
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | |
|---|---|---|
R-HS | R-L | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | |
Front/Street-side1 | 30 ft. | 20 ft. |
Side: | 30 ft. | 7 ft. minimum, 18 ft. total |
Side: | 30 ft. | 7 ft. minimum, 18 ft. total |
Rear | 30 ft. | 20 ft. |
Garage: Front | 30 ft. | 20 ft. from primary structure |
F.A.R./Site Coverage | ||
F.A.R. | 0.10 | 0.35 |
Site Coverage | 10% | 40% |
Open Space | Minimum open space required for residential component only. See SMC 19.40.070 and 19.40.080 for design requirements. | |
Residential: Private | No minimum requirement. | |
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | |
Primary Structure | 30 ft. | 30 ft. |
Notes:
1.In the Pk and P zoning districts, development standards are determined on a case-by-case basis through use permit review.
(Ord. 02-2021 § 1(11), 2021; Ord. 2003-02 § 3, 2003).
Project Design
This division provides standards and guidelines for the site layout and design of individual development projects within the various areas of the community. Because Sonoma is comprised of distinct areas with individual character and features representing different periods in history, the provisions of this division are organized by specific “planning areas” within the city. These standards and guidelines are intended to ensure that the appearance and function of proposed development preserves and enhances the desired character of each area.

A. Existing Conditions. The Northeast planning area lies immediately to the north and east of the Plaza and downtown, and extends to the northeast city boundary. The planning area, which encompasses 230 acres, includes many historical structures and diverse land uses. Scenic vistas of the surrounding hillsides along four of the major north-south streets and a portion of the city’s bike path are also important attributes of this area. Existing development is characterized by wide variety in architectural styles, site planning techniques, and street patterns, reflecting different periods in the city’s history. Important natural features include Schocken Hill, which extends into the planning area from the north, and Nathanson Creek, which runs through the southeast edge of the area. Visually, this area is marked by the contrast of rural and urban elements.
Existing land uses include:

A. Existing Conditions. The Central-East planning area is located at the eastern edge of the city, between East Napa Street and East MacArthur Street, and includes some of the oldest residential areas in the community, with mature landscaping and street trees. The streets primarily follow a grid pattern with variable widths, supporting slower traffic. Some streets have sidewalks and/or parkway landscaping strips and many homes have tall, mature hedges along the front property line, which create well defined street edges. Setbacks tend to be large, but vary widely.
The area includes a variety of architectural styles, representative of individual home subdivision and construction. Nathanson Creek meanders from the northern boundary of the planning area along its west edge, where it crosses East MacArthur Street. The east edge of the planning area is adjacent to open fields outside of the city, and the planning area also has views of the hillsides to the north.

A. Existing Conditions. The Southeast area is roughly bounded on three sides by major collector streets, with Nathanson Creek forming the western boundary. The smaller lot sizes and street improvements associated with the single-family subdivisions within the city contrast with the rural lands of the unincorporated sphere of influence, with little transition between the two. The three large single-family subdivisions within city limits are not characterized by any particular street or block pattern, except that all feature curb, gutter, and sidewalk, and none provide, at present, a connection to or continuation of the traditional grid pattern found to the north.
Existing land uses include:

A. Existing Conditions. The Northwest planning area is a predominantly residential district bounded by the West Napa Street/Sonoma Highway commercial corridor on the west and south and the Vallejo Home State Park on the east. Verano Avenue forms the northern boundary. A class 1 bike/walking path crosses the planning area, providing local access to Olsen Park, as well as a route to Maxwell Regional Park on the west and the Plaza on the east. In general, residential development within the area is of three types: (1) older tracts of single-family residences on long, narrow blocks arranged in a grid pattern (east of Fifth Street); (2) newer tracts of single-family residences arranged on curvilinear streets and cul-de-sacs (west of Fifth Street); and (3) multifamily development, in the form of condominiums and P.U.D.s, along West Spain Street.
Existing land uses include:

A. Existing Conditions. The Central-West planning area is large, at 297 acres, and contains a variety of housing types, including low density single-family, mobile home parks, duplexes and fourplexes, as well as large-scale multifamily developments. Sonoma Creek, on the west, represents the area’s most distinct boundary. The West Napa/Sonoma Highway commercial corridor lies to the north, the Downtown district and Broadway to the east, and rural development within the Southwest planning area to the south. The development of this area is recent in terms of the city’s overall history, with the oldest tracts dating back to the 1950s. Within single-family areas, front setbacks tend to be quite consistent (20 feet, usually), less so in the multifamily sections. Most of the streets are developed with monolithic sidewalks rather than planter strips. The major streets within the Central-West area form a grid, continued by some local streets and ignored by others.
Existing land uses include:

A. Existing Conditions. The Southwest planning area, which is entirely residential, is marked by sharp contrasts between rural and urban development. Malet Street and Harrington Drive are rural enclaves, developed mainly with older residences. New residential development includes a single-family tract and a series of higher density tracts featuring detached units on small lots. The Southwest area is bounded by rural and agricultural lands outside of the city’s sphere of influence on the south and west, with the Broadway corridor and the gateway at Four Corners to the east, and urban residential development to the north. The Fryer Creek channel bisects the area. No east-west streets traverse the planning area (with the exception of Leveroni Road), due to the presence of the creek, but there is a bicycle/pedestrian connection at the southern end of the channel. This crossing connects bike/pedestrian pathways which run along either side of the channel, providing access to the two neighborhood parks within the planning area.
Existing land uses include:

A. Existing Conditions. Although the Gateway commercial district encompasses only 59 acres, its future development is crucial to the identity of Sonoma. It forms the southern entrance to the city and marks the division between the rural and agricultural character of the unincorporated area and the urban features of the city. The district is bounded by existing and planned multifamily development to the west and north, rural residential, agricultural, and vacant parcels to the south, and Nathanson Creek to the east. Broadway and Napa/Leveroni Road divide the district into quarters.
Existing land uses include:

A. Existing Conditions. Connecting the southern gateway to the downtown, the Broadway corridor possesses considerable historic, visual, and functional significance. Historically, Broadway completes the Camino Real or “Royal Road” of Spanish/Mexican mission settlements. Visually, Broadway provides a grand entrance to downtown Sonoma with its axial view of the Plaza, City Hall, and the northern hills, its 110-foot right-of-way, and its procession of street trees. Functionally, Broadway is a segment of State Route 12 and is a major traffic arterial. The Broadway corridor is flanked by residential areas, with Nathanson Creek forming its eastern edge and First Street West its western boundary. Parcels along Broadway tend to be long and narrow (to widths of 50 feet) and some have double frontages.
North of MacArthur Street, Broadway possesses a clear visual organization defined by historic structures with landscaped front yards and generally regular setbacks, street trees, and a consistent street width. South Broadway, in contrast, features a patchwork of older (but not historic) commercial buildings, new commercial and multifamily residential development, historic single-family homes and remnant agricultural buildings. These uses are interspersed with vacant parcels. However, the dominant use on South Broadway, in terms of area, appearance, and intensity, is the high school. Street improvements along South Broadway are inconsistent.

A. Existing Conditions. The Downtown district is the heart of Sonoma. The district centers on the Plaza and the historic downtown, collectively designated as a National Historic Landmark. The Sonoma Plaza is an eight-acre park, framed by historic buildings, with City Hall at its center. The downtown encompasses a lively concentration of small businesses, including restaurants, bookstores, specialty retail, and offices. A cluster of historically significant buildings on the north side of the district, including the mission and the barracks, are managed as a state park. Outside of the original downtown area, the western portion of the district contains a mix of single-family, multifamily, retail, and office development, including a modern shopping center. Multifamily development lies at the northwest and southeast edges of the district.
Existing land uses include:

A. Existing Conditions. Located in west and northwest Sonoma, the West Napa Street/Sonoma Highway corridor is a commercial strip comprised of segments of State Highway 12. Beginning at West Napa Street/Third Street West, it extends westward along West Napa Street to Riverside Drive, then northward along the Sonoma Highway to Harley Street. Although it contains a wide variety of uses and building types, many of the blocks within the corridor present a pleasing appearance and exhibit a high degree of visual organization. The corridor is also punctuated by shopping centers with expansive parking lots, some only lightly landscaped, which break the rhythm established by smaller-scale development. Still other segments are more notable for their natural features and present a distinctly rural appearance (Sonoma Creek is a significant, if underutilized, natural amenity). Throughout the corridor, there are axial views of the hills surrounding Sonoma. West Napa Street and the Sonoma Highway are the city’s primary collectors and the corridor contains the most heavily travelled streets in Sonoma.
Existing land uses include:
A. Existing Conditions. The three open space districts are characterized by large areas of land in public ownership devoted to open space and recreational uses. The Maxwell district has an area of approximately 89 acres, all of which is owned by Sonoma County and dedicated to use as a regional park. The Maxwell Farms Regional Park encompasses a range of recreational uses, including playing fields, a Boys and Girls Club, and natural hiking areas.
The Vallejo district is dominated by the 57-acre Vallejo Home State Park. The historic buildings within this park are set off by expansive vistas. North of the park are several large, vacant parcels, currently used for grazing but having a zoning of Hillside Residential. Other uses within the district include a complex of city buildings (the police station and the city council chambers) and playing fields, a church, and a small amount of residential development.
This division establishes 13 planning areas within the city, based on the time periods and types of development and land uses that characterize each area. This division also establishes site planning and design standards for each area to ensure that proposed projects are designed to enhance and maintain the most desirable development and environmental characteristics of each unique area of the city. The planning areas are described in terms of three subtypes – areas, districts, and corridors – depending upon their function, their geography, and the range of land uses within them. (Ord. 2003-02 § 3, 2003).
The provisions of this division are applicable to specific sites within the city based on the area where the site is located. The following planning areas are hereby established (see Table 3-1). The overall structure of the planning areas is depicted on Figure 1 and the location and boundaries of each area are shown on Figure 3-21.
Table 3-1. Planning Areas
Planning Area | See |
|---|---|
Northeast Area | Chapter 19.18 SMC |
Central-East Area | Chapter 19.20 SMC |
Southeast Area | Chapter 19.22 SMC |
Northwest Area | Chapter 19.24 SMC |
Central-West Area | Chapter 19.26 SMC |
Southwest Area | Chapter 19.28 SMC |
Gateway District | Chapter 19.30 SMC |
Broadway Corridor | Chapter 19.32 SMC |
Downtown District | Chapter 19.34 SMC |
West Napa Street/Sonoma Highway Corridor | Chapter 19.36 SMC |
Open Space Districts | Chapter 19.38 SMC |

(Ord. 2003-02 § 3, 2003).
Each planning area is the subject of a separate chapter containing standards, guidelines, and background information specific to that area, divided between three sections.
A. Overview and Objectives. The first section (“Existing Conditions, Desired Future, Potential Changes”) contains a general overview of the planning area, a statement of broad planning objectives, and a description of likely public improvements and other potential changes, as follows:
1. Existing Conditions. The discussion of existing conditions which opens each chapter is intended to briefly set forth the unique characteristics of each planning area in terms of natural and built features. A primary purpose of this section is to provide a context for the regulations and guidelines that follow.
2. Desired Future. This subsection contains a discussion of the general planning objectives for the area as derived from relevant General Plan policies and the particular conditions of the planning area. It is to be used by decision-making bodies, including the city council, the historic preservation commission, and the planning commission, as a reference to the larger intent of specific development regulations and as guidelines in the review of discretionary development applications within each planning area.
3. Potential Changes. In this subsection, specific public improvements relevant to each planning area are described, including street extensions, new bicycle and pedestrian paths, drainage improvements, and street tree plantings. Also described are approved or anticipated private development projects of significance to the planning area. Projects and improvements are drawn from General Plan policies and implementation measures, the city’s five-year capital improvement program, other project objectives identified by the city council, approved and anticipated development proposals, and projects identified by other agencies (e.g., the Sonoma Valley Unified School District). The purposes of this section are to:
a. Provide decision-makers and the general public with a common frame of reference as to potential public improvements and other changes relevant to development conditions;
b. Provide a basis for requiring new development to participate in the provision of public improvements when such participation is warranted due to the impacts of development;
c. Ensure that known and prospective public improvements are considered in the review of development applications.
B. Development Standards and Guidelines. The second section (“Project Planning and Design Standards”) sets forth specific development standards and guidelines applicable to new development. The specific provisions of this section are as follows:
1. Zoning Map. A zoning map is provided for each planning area depicting the zoning districts within it, as well as the zoning designations which would apply to areas outside of the city limits but within the sphere of influence.
2. Site Planning. The physical standards, requirements, and guidelines applicable to new development are set forth in this subsection, including limitations on density and regulations pertaining to building setbacks, coverage, open space and parking design. Environmental features and screening and buffering requirements are also addressed.
3. Building Design. In this subsection, standards and guidelines regarding building heights, types, and profiles are provided.
4. Design Map and Guidelines. Concluding the chapter for each planning area is a design map and accompanying design guidelines. The map and guidelines are intended to highlight key planning issues facing each planning area.
C. Overview of Conditions. The concluding section is a map in which the major physical features of each planning area are identified, including streets, building envelopes, creeks, and contour lines. The balance of land uses and the number of units within each planning area are summarized as well. (Ord. 06-2013 § 3, 2013; amended during June 2011 supplement; Ord. 2003-02 § 3, 2003).
New land uses and structures, and alterations to existing land uses and structures, shall be designed, constructed, and/or established in compliance with the requirements of this division for the applicable planning area, in addition to the applicable development standards in Division IV, General Site Planning and Development Standards. (Ord. 2003-02 § 3, 2003).
A. Existing Conditions. The Northeast planning area lies immediately to the north and east of the Plaza and downtown, and extends to the northeast city boundary. The planning area, which encompasses 230 acres, includes many historical structures and diverse land uses. Scenic vistas of the surrounding hillsides along four of the major north-south streets and a portion of the city’s bike path are also important attributes of this area. Existing development is characterized by wide variety in architectural styles, site planning techniques, and street patterns, reflecting different periods in the city’s history. Important natural features include Schocken Hill, which extends into the planning area from the north, and Nathanson Creek, which runs through the southeast edge of the area. Visually, this area is marked by the contrast of rural and urban elements.
Existing land uses include:
1. A scattering of commercial uses, including a restaurant, a small office building, the Vella Cheese company and a light industrial facility;
2. Medium density residences, including a few small lot subdivisions and multifamily dwellings;
3. Depot Park and a complex of county-owned recreational facilities including the Veterans’ Building and Arnold Field;
4. Sebastiani Winery and a small amount of vineyard land;
5. Rural hillside residential areas;
6. Low density single-family residences;
7. Agricultural land; and
8. Undeveloped open space areas zoned for other land uses.
The bicycle/walking path which runs east and west through the center of the planning area is an important recreational and social element of the Northeast planning area.
B. Desired Future. The general objective for this area, as expressed in SMC 19.18.020, Project planning and design, is to preserve the quality and context of land uses and buildings. Remodeling or additions to existing structures and infill development including intensification in mixed use areas, will require careful attention to surrounding building form, site design, and land uses to preserve the quality of development in the Northeast planning area. The emphasis of mixed use development should be residential, with some small-scale office, bed and breakfast, or other compatible commercial land uses allowed subject to use permit review.
C. Potential Changes. Specific improvements contemplated in this area include improvements to the Maysonnave property and Depot Park, the creation of a pedestrian corridor linking the Plaza, Depot Park and the Sonoma Overlook Trail, and landscaping improvements to public parking lots. (Ord. 2003-02 § 3, 2003).
A. Site Planning Standards.
1. Residential Density. The following residential density and minimum lot size requirements apply to proposed subdivisions and multifamily developments within the Northeast planning area.
Table 3-2. Lot Size and Residential Density Requirements
Zoning District | Number of Dwellings Per Parcel1 | Minimum Lot Size |
|---|---|---|
R-HS | 1 maximum; | 10 acres |
R-R | 2 per acre maximum | 20,000 sq. ft. |
R-L | 2 per acre minimum; | 7,500 sq. ft. |
R-M | 7 per acre minimum; | 5,500 sq. ft. |
MX | 20 per acre maximum | 7,000 sq. ft. |
W | None2 | 5 acres |
A | 1 maximum | 10 acres |
Notes:
1.Densities do not include density bonus. See Chapter 19.44 SMC.
2.Residences are not allowed in the W zone, except for caretaker residences authorized through use permit approval.
2. Setbacks, Site Coverage, and Open Space. Proposed development shall be designed and constructed in compliance with the requirements set forth in Tables 3-3 and 3-4.
Table 3-3. Northeast Area: Infill and Additions
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | ||||||
|---|---|---|---|---|---|---|---|
W1 | A | R-HS | R-R | R-L | R-M | MX | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | ||||||
Front/Street-side2 | 30 ft. | 30 ft. | New construction: 20 ft. or the same as the closest structure to the street on either side, whichever is more. Additions: 20 ft. | New construction: 15 ft. or the same as the closest structure to the street on either side, whichever is less. Additions: 15 ft. | N.A. | ||
Side: | 30 ft. | 20 ft. min., 50 ft. total | 7 ft. minimum, | 7 ft. minimum, | |||
Side: | 30 ft. | 20 ft. min., 50 ft. total | 7 ft.minimum, | 7 ft. minimum, | |||
Rear | 30 ft. | 30 ft. | 25 ft. | 20 ft. | |||
Garage: | 30 ft. | 30 ft. | 20 ft. from primary structure | ||||
F.A.R./Site Coverage | |||||||
F.A.R. | N.A. | 0.05 | 0.10 | 0.20 | 0.35 | 0.50 | 0.60 |
Site Coverage | N.A. | 10% | 15% | 25% | 40% | 60% | 60% |
Open Space | |||||||
Commercial | No minimum requirement. | N.A. | 7% – 11% of site | ||||
Residential: Common | No minimum requirement. | 300 sq. ft. per unit | |||||
Residential: Private | No minimum requirement. | 75 – 225 sq. ft. per unit | |||||
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | ||||||
Primary Structure | 35 ft. | 30 ft. | |||||
Notes:
1.Setbacks in the W district may be reduced where the review authority first finds that the reduced setback would not be detrimental to surrounding land uses.
Table 3-4. Northeast Area: Subdivisions of 5+ Lots
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | |
|---|---|---|
R-M | MX | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | |
Front/Street-side1 | 15 ft., one-story 20 ft., two-story | A variety of setbacks, consistent with neighborhood conditions, shall normally be required at the discretion of the planning commission. |
Side: | 5 ft. minimum, | 5 ft. minimum, |
Side: | 10 ft. minimum on two-story side | 8 ft. minimum on two-story side |
Rear | One-story: 20 ft.; two-story: 25 ft. | One-story: 15 ft.; two-story: 20 ft. |
Garage: | 20 ft. from primary structure | 20 ft. from primary structure |
F.A.R./Site Coverage | ||
F.A.R. | 0.45 | 0.60 |
Site Coverage | 50% | 60% |
Open Space | Minimum open space required for residential development component only. See SMC 19.40.070 and 19.40.080 for design requirements. | |
Commercial | 7% – 11% of site | 7% – 11% of site |
Residential: Common | 300 sq. ft. per unit | 300 sq. ft. per unit |
Residential: Private | 75 – 225 sq. ft. per unit | 75 – 225 sq. ft. per unit |
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | |
Primary Structure | 30 ft. | 30 ft. |
Notes:
3. Driveways and Parking. Parking areas for multifamily and mixed use developments shall not be located in a front setback, but shall be provided at the rear or along the side of the site. Nonresidential and multifamily parking areas shall be screened from adjacent residential zoning districts and land uses. See Chapter 19.48 SMC, Parking and Loading Standards.
4. Natural Features. Environmental amenities including creeks, streams and other drainage courses, mature trees, and rock outcrops shall be preserved and incorporated into the proposed site plan. Appropriate enhancement or protective measures shall be included in plans where determined necessary by the planning commission. See SMC 19.40.050, Hillside development, and SMC 19.40.060, Landscape standards, and the tree preservation ordinance for specific hillside development and tree preservation requirements and guidelines.

5. Screening and Buffering. Multifamily and mixed use development shall require screening and buffering of parking and driveway areas, and noise and light sources. See Chapter 19.46 SMC, Fences, Hedges and Walls, and landscape standards and guidelines (SMC 19.40.060).
B. Building Design.
1. Height and Profile. Proposed structures shall not exceed a maximum height of two stories or 30 feet; provided, that structures in the A and the W zoning districts may be allowed up to 35 feet in height. Second stories shall be set back an additional 10 feet from the front setback, and five feet on the sides and rear setbacks. See the following design guidelines, and SMC 19.40.040, for height measurement and exceptions.
2. Building Types – Guidelines for Residential Structures. Proposed dwellings should be placed on their sites so that the most narrow dimension of the structure is parallel to the most narrow dimension of the parcel, and so that the primary entrance to the dwelling faces the public street, or is accessible from a porch or other entry element which faces the street.
3. Building Types – Guidelines for Commercial Structures. Proposed commercial and mixed use structures should be compatible in scale, massing height to residential development in the vicinity. Building architecture and design details should maintain a low-key, residential flavor.
C. Street and Block Layout. It is intended that streets within the Northeast Planning Area will be maintained at their existing width and alignment. (Ord. 02-2021 § 1(1), 2021; Ord. 03-2004 § 3, 2004; Ord. 2003-02 § 3, 2003).
A. Existing Conditions. The Central-East planning area is located at the eastern edge of the city, between East Napa Street and East MacArthur Street, and includes some of the oldest residential areas in the community, with mature landscaping and street trees. The streets primarily follow a grid pattern with variable widths, supporting slower traffic. Some streets have sidewalks and/or parkway landscaping strips and many homes have tall, mature hedges along the front property line, which create well defined street edges. Setbacks tend to be large, but vary widely.
The area includes a variety of architectural styles, representative of individual home subdivision and construction. Nathanson Creek meanders from the northern boundary of the planning area along its west edge, where it crosses East MacArthur Street. The east edge of the planning area is adjacent to open fields outside of the city, and the planning area also has views of the hillsides to the north.
Existing land uses include:
1. Low density single-family homes;
2. Four neighborhood parks;
3. The Sonoma Community Center;
4. Undeveloped, Sonoma residential property in the sphere of influence; and
5. A cemetery.
B. Desired Future. The general objective for this area, as expressed in SMC 19.20.020, Project planning and design, is to preserve the existing quality and fabric of residential neighborhoods in the Central-East planning area. Two key issues that could affect efforts to maintain the character of the area include a significant number of parcels that could be subdivided as infill lots, and the site planning and building design techniques employed in their development. Development of the potential infill parcels will mainly need to focus on visual compatibility with the adjacent patterns of site design, building scale, and architectural context.
C. Potential Changes. The future development of the parcels east of Armstrong Estates will lead to the extension of Charles Van Damme Way and William Cunningham Avenue, and perhaps to the connection of Appleton Way with East Napa Street. This area, portions of which are currently outside of city limits, has an R-S designation, which calls for somewhat higher densities and a greater variety in lot sizes than what is found in the development to the west (Armstrong Estates), which features lots having a minimum area of 20,000 square feet. (Ord. 2003-02 § 3, 2003).
A. Site Planning.
1. Residential Density. The following residential densities and minimum lot size requirements apply to proposed subdivisions and multifamily projects within the Central-East planning area.
Table 3-5. Lot Size and Residential Density Requirements
Zoning District | Number of Dwellings Per Parcel1 | Minimum Lot Size |
|---|---|---|
R-L | 2 per acre minimum; | 7,500 sq. ft. |
R-S | 3 per acre minimum; | 5,000 sq. ft. |
R-M | 7 per acre minimum; | 5,500 sq. ft. |
Notes:
1.Densities do not include density bonus. See Chapter 19.44 SMC.
2. Setbacks, Site Coverage, and Open Space. Proposed development shall be designed and constructed in compliance with the requirements set forth in Tables 3-6 and 3-7, following.
3. Driveways and Parking. Driveways and parking areas for multifamily projects shall not be located in a front setback, but shall be provided at the rear or along the side of the site. Nonresidential and multifamily parking areas shall be screened from adjacent residential zoning districts and land uses. See Chapter 19.48 SMC, Parking and Loading Standards.
4. Natural Features. Significant environmental amenities including Nathanson Creek, related riparian areas, and mature trees, shall be preserved by being incorporated into site plan design and layout. Appropriate enhancement or protective measures shall be included in plans where determined necessary by the planning commission. See landscaping standards and design guidelines (SMC 19.40.060), and the tree preservation ordinance for specific tree preservation requirements and guidelines. Environmental features of lesser significance should be incorporated into project site plans when appropriate if justified by the quality of the feature and its relation to the site.
Table 3-6. Central-East Area: Infill and Additions
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | ||
|---|---|---|---|
R-L | R-S | R-M | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | ||
Front/Street-side1 | New structures on vacant parcels: 25 ft. or the same as the average of structures to the street on either side, whichever is greater.2 Additions: 20 ft. Nonconforming replacement structures: The same location as the original structure. | 20 ft. | |
Side: | 7 ft. minimum, 18 ft. combined | 5 ft. minimum, 15 ft. combined | 5 ft. minimum, 15 ft. combined |
Side: | 3 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,4 in addition to the normal requirement for one-story structures. | 2 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,4 in addition to the normal requirement for one-story structures. | 8 ft. minimum on two-story side |
Rear | 20 ft. | 15 ft. | |
Garage: | 20 ft. from the front of the primary structure | 20 ft. from the front of the primary structure | 20 ft. from the front of the primary structure |
F.A.R./ Site Coverage | |||
F.A.R. | 0.35 | 0.35 | 0.50 |
Site Coverage | 40% | 40% | 60% |
Open Space | See SMC 19.40.070 for design requirements. | ||
Residential: Common | N.A. | N.A. | 300 sq. ft. per unit |
Residential: Private | N.A. | N.A. | 75 – 225 sq. ft. per unit |
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | ||
Primary Structure | 35 ft. on parcels of 20,000 sq. ft. or greater, otherwise 30 ft. | 30 ft. | 30 ft. |
Notes:
1.Front porches may extend up to 10 feet into front setback (or street-side setback for wrap-around porches).
2.Where averaging adjacent structures results in a setback of greater than 30 feet, a 30-foot setback shall be allowed.
3.A nonconforming replacement structure shall not exceed 10 percent of the height or area of the original structure, unless a use permit is obtained.
4.Measured at building wall, not ridge.
Table 3-7. Central-East Area: New Subdivisions of 5+ Lots
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | ||
|---|---|---|---|
R-L | R-S | R-M | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | ||
Front/Street-side1 | A variety of setbacks, compatible with neighborhood conditions, shall normally be required at the discretion of the planning commission. An average setback of 25 ft. shall be maintained. | 20 ft. | |
Side: | 7 ft. minimum, 18 ft. combined | As approved by the planning commission, except that in no case shall a setback of less than 3 ft. be allowed. | 5 ft. minimum, 15 ft. combined |
Side: | 3 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,2 in addition to the normal requirement for one-story structures. | 8 ft. minimum on two-story side | |
Rear | 20 ft. | 15 ft. | |
Garage: | 20 ft. from the front of the primary structure | 20 ft. from the front of the primary structure | 20 ft. from the front of the primary structure |
F.A.R./Site Coverage | |||
F.A.R. | 0.35 | 0.35 | 0.50 |
Site Coverage | 40% | 40% | 60% |
Open Space | See SMC 19.40.070 for design requirements. | ||
Residential: Common | N.A. | 500 sq. ft. per unit, any combination of shared or private | 300 sq. ft. per unit |
Residential: Private | N.A. | 75 – 225 sq. ft. per unit | |
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | ||
Primary Structure | 35 ft. on parcels of 20,000 sq. ft. or greater; otherwise 30 ft. | 30 ft. | 30 ft. |
Notes:
1.Front porches may extend up to 10 feet into front setback (or street-side setback for wrap-around porches).
2.Measured at building wall, not ridge.
5. Screening and Buffering. Multifamily developments shall require screening and buffering of parking and driveway areas, and noise and light sources. See Chapter 19.46 SMC, Fences, Hedges and Walls, and landscape standards and guidelines (SMC 19.40.060).
B. Building Design.
1. Height and Profile. Proposed structures shall not exceed a maximum height of 30 feet. Structures may exceed the height standard by increasing side and rear setbacks by two feet for each additional five feet in height. Second stories must be set back an additional 10 feet from the front setback, and five feet on the sides and rear setbacks. See the following design guidelines, and SMC 19.40.040 for height measurement and exceptions.
2. Building Types – Guidelines for Residential Structures. Proposed dwellings should be placed on their sites so that the most narrow dimension of the structure is parallel to the most narrow dimension of the parcel, and so that the primary entrance to the dwelling faces the public street, or is accessible from a porch or other entry element which faces the street.
C. Street and Block Layout. It is intended that streets within the Central-East planning area will be maintained at their existing width and alignment. (Ord. 02-2021 § 1(2), 2021; Ord. 03-2004 § 3, 2004; Ord. 2003-02 § 3, 2003).
A. Existing Conditions. The Southeast area is roughly bounded on three sides by major collector streets, with Nathanson Creek forming the western boundary. The smaller lot sizes and street improvements associated with the single-family subdivisions within the city contrast with the rural lands of the unincorporated sphere of influence, with little transition between the two. The three large single-family subdivisions within city limits are not characterized by any particular street or block pattern, except that all feature curb, gutter, and sidewalk, and none provide, at present, a connection to or continuation of the traditional grid pattern found to the north.
Existing land uses include:
1. Low density single-family homes;
2. A large block of vacant or lightly developed Sonoma residential and low density residential properties in the sphere of influence;
3. A creekside neighborhood park;
4. The Sonoma Valley High School and its associated playing fields on the east;
5. A middle school;
6. An elementary school; and
7. A cemetery.
B. Desired Future. The general objectives for this area, as expressed in SMC 19.22.020, Project planning and design, are as set forth below. The area along Fifth Street East, between Denmark Street and Napa Road, represents the largest block of undeveloped residential land within the sphere of influence. Its development should be based on elements found in traditional Sonoma neighborhoods, including grid streets, a mix of lot sizes, and variation in the size and style of homes. The development of this area should result in a distinct edge to the city, rather than a “feathering” effect, and should connect to adjoining subdivisions.
C. Potential Changes. The development of the Sonoma residential area will allow for additional grid street connections to Fifth Street East, Denmark Street, and, potentially, Napa Road. The extension of curb, gutter and sidewalk, and the undergrounding of drainage will be needed along the east side of Fifth Street East and the north side of Napa Road. In addition, the intersection of Fifth Street East/Napa Road will ultimately need to be signalized.
The high school expansion and the recently completed middle school on the property south of the high school have implications for the residential development adjacent to the east. The placement of buildings, playing fields, access and parking should support those neighborhoods, not diminish them. To provide convenient access to playing fields and other facilities on the east side of the creek, an access road (public or private) should be extended to connect Denmark Street with Newcomb Street. Opportunities for creek restoration should be pursued along the bicycle/pedestrian path recently developed on the east side of Nathanson Creek. Connections to this path should be made to the residential areas on the east. (Ord. 2003-02 § 3, 2003).
A. Site Planning Standards.
1. Residential Density. The following residential density and minimum lot size requirements apply to proposed subdivisions and multifamily projects within the Southeast planning area:
Table 3-8. Lot Size and Residential Density Requirements
Zoning District | Number of Dwellings Per Parcel1 | Minimum Lot Size |
|---|---|---|
R-L | 2 per acre minimum; | 7,500 sq. ft. |
R-S | 3 per acre minimum; | 5,000 sq. ft. |
R-M | 7 per acre minimum; | 5,500 sq. ft. |
Notes:
1.Densities do not include density bonus. See Chapter 19.44 SMC.
2. Setbacks, Site Coverage, and Open Space. Proposed development shall be designed and constructed in compliance with the requirements set forth in Tables 3-9 and 3-10, following.
3. Driveways and Parking. Parking areas for multifamily projects shall not be located in a front setback, but shall be provided at the rear or along the side of the site. Multifamily parking areas shall be screened from adjacent residential zoning districts and land uses. See Chapter 19.48 SMC, Parking and Loading Standards. Driveways along collector streets shall be minimized when possible, by combining driveways, using alleys, or designing development so that access is provided from local streets.
4. Natural Features. Significant environmental amenities, including Nathanson Creek, related riparian areas, and mature oak trees, shall be preserved by being incorporated into site plan design and layout. Appropriate enhancement or protective measures shall be included in plans where determined necessary by the planning commission. See landscaping standards and design guidelines (SMC 19.40.060), and the tree preservation ordinance for specific tree preservation requirements and guidelines. Environmental features of lesser significance should be incorporated into project site plans when appropriate if justified by the quality of the feature and its relation to the site.
5. Screening and Buffering. Multifamily developments shall require screening and buffering of parking and driveway areas, and noise and light sources. See Chapter 19.46 SMC, Fences, Hedges and Walls, and landscape standards and guidelines (SMC 19.40.060).
B. Building Design.
1. Height and Profile. Proposed structures shall not exceed a maximum height of 30 feet. For structures in excess of 15 feet, side and rear setbacks shall be increased by two feet for each additional five feet in height. See the following design guidelines, and SMC 19.40.040 for height measurement and exceptions.
2. Building Types – Guidelines for Residential Structures. Proposed dwellings should be placed on their sites so that the most narrow dimension of the structure is parallel to the most narrow dimension of the parcel, and so that the primary entrance to the dwelling faces the public street, or is accessible from a porch or other entry element which faces the street.
C. Street and Block Layout. It is intended that streets within the Southeast planning area will be maintained at their existing width and alignment.
Table 3-9. Southeast Area: Infill and Additions
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | ||
|---|---|---|---|
R-L | R-S | R-M | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | ||
Front/Street-side1 | New structures on vacant parcels: 20 ft. or the same as the average of structures to the street on either side, whichever is greater.2 Additions: 20 ft. Nonconforming replacement structures: The same location as the original structure.3 | 15 ft. | |
Side: | 7 ft. minimum, 18 ft. combined | 5 ft. minimum, 15 ft. combined | 5 ft. minimum, 15 ft. combined |
Side: | 3 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,4 in addition to the normal requirement for one-story structures. | 2 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,4 in addition to the normal requirement for one-story structures. | 8 ft. minimum on two-story side |
Rear | 20 ft. | 15 ft. | |
Garage: | 20 ft. from the front of the primary structure | 20 ft. from the front of the primary structure | 20 ft. from the front of the primary structure |
F.A.R./Site Coverage | |||
F.A.R. | 0.35 | 0.35 | 0.50 |
Site Coverage | 40% | 40% | 60% |
Open Space | See SMC 19.40.070 for design requirements. | ||
Residential: Common | N.A. | 500 sq. ft. per unit, any combination of shared or private. | 300 sq. ft. per unit, any combination of shared or private. |
Residential: Private | N.A. | ||
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | ||
Primary Structure | 30 ft. | 30 ft. | 30 ft. |
Notes:
1.Front porches may extend up to 10 feet into front setback (or street-side setback for wrap-around porches).
2.Where averaging adjacent structures results in a setback of greater than 30 feet, a 30-foot setback shall be allowed.
3.A nonconforming replacement structure shall not exceed 10 percent of the height or area of the original structure, unless a use permit is obtained.
4.Measured at building wall, not ridge.
Table 3-10. Southeast Area: New Subdivisions of 5+ Lots
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | ||
|---|---|---|---|
R-L | R-S | R-M | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | ||
Front/Street-side1 | A variety of setbacks, compatible with neighborhood conditions, shall normally be required at the discretion of the planning commission. An average setback of 20 feet shall be maintained. | 15 ft. | |
Side: | 7 ft. minimum, 18 ft. combined | As approved by the planning commission, except that in no case shall a setback of less than 3 ft. be allowed. | 5 ft. minimum, 15 ft. combined |
Side: | 3 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,2 in addition to the normal requirement for one-story structures. | 8 ft. minimum on two-story side | |
Rear | 20 ft. | 15 ft. | |
Garage: | 20 ft. from the front of the primary structure | 20 ft. from the front of the primary structure | 20 ft. from the front of the primary structure |
F.A.R./Site Coverage | |||
F.A.R. | 0.35 | 0.35 | 0.50 |
Site Coverage | 40% | 40% | 60% |
Open Space | See SMC 19.40.070 for design requirements. | ||
Residential: Common | N.A. | 500 sq. ft. per unit, any combination of shared or private | 300 sq. ft. per unit, any combination of shared or private |
Residential: Private | N.A. | ||
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | ||
Primary Structure | 30 ft. | 30 ft. | 30 ft. |
Notes:
1.Front porches may extend up to 10 feet into front setback (or street-side setback for wrap-around porches).
2.Measured at building wall, not ridge.
A. Existing Conditions. The Northwest planning area is a predominantly residential district bounded by the West Napa Street/Sonoma Highway commercial corridor on the west and south and the Vallejo Home State Park on the east. Verano Avenue forms the northern boundary. A class 1 bike/walking path crosses the planning area, providing local access to Olsen Park, as well as a route to Maxwell Regional Park on the west and the Plaza on the east. In general, residential development within the area is of three types: (1) older tracts of single-family residences on long, narrow blocks arranged in a grid pattern (east of Fifth Street); (2) newer tracts of single-family residences arranged on curvilinear streets and cul-de-sacs (west of Fifth Street); and (3) multifamily development, in the form of condominiums and P.U.D.s, along West Spain Street.
Existing land uses include:
1. Low density single-family homes;
2. Condominiums and planned developments;
3. A neighborhood park;
4. A restaurant and a cooking school;
5. A parking area and a small office building associated with the Sonoma Valley shopping center; and
6. Scattered vacant parcels, some of them as large as 14 acres.
B. Desired Future. As expressed in SMC 19.24.020, the general objectives for the Northwest planning area are as follows: Within the single-family areas, additions and reconstruction will increase the architectural variety of the area, a trend which should be encouraged while preserving the generally small scale of the older tracts and avoiding the over-building of lots. The largest opportunity for new residential development is represented by the Montini property, a 14-acre parcel located at the northwest corner of the planning area, adjacent to the Vallejo Home State Park. Its development should contribute to the character of the area by extending the grid pattern of the older residential blocks to the south, while providing a greater variety of lot sizes and unit types as called for by its Sonoma Residential zoning designation.
New multifamily development along West Spain Street should emulate the good examples in the area by providing generous street-side setbacks, maintaining low building profiles, and locating parking within the interior or the back of the lot.
C. Potential Changes. Views from Fifth Street West of the northern hills lost through the development of the Montini property will be regained by the extension of Fourth Street West and Verano Avenue. While Fourth Street West will also be extended from West Spain Street to connect with Rosalie Drive, no connection will be made across the bike path in order to preserve the safety of the path and to prevent Fourth Street from being used as a shortcut to Sonoma Highway. Pedestrian access to and from Sonoma Market will be improved by closing gaps in the sidewalk system, especially at the intersection of Fifth Street West and West Spain Street. This intersection may ultimately be signalized. (Ord. 2003-02 § 3, 2003).
A. Site Planning Standards.
1. Residential Density. The following density and minimum lot size requirements apply to proposed subdivisions and multifamily projects within the Northwest planning area:
Table 3-11. Lot Size and Residential Density Requirements
Zoning District | Number of Dwellings Per Parcel1 | Minimum Lot Size |
|---|---|---|
R-L | 2 per acre minimum; | 7,500 sq. ft. |
R-S | 3 per acre minimum; | 5,500 sq. ft. |
R-M | 7 per acre minimum; | 5,000 sq. ft. |
MX | 20 per acre maximum | 7,000 sq. ft. |
Notes:
1.Densities do not include density bonus. See Chapter 19.44 SMC.
2. Setbacks, Site Coverage, and Open Space. Proposed development shall be designed and constructed in compliance with the requirements set forth in Tables 3-12 and 3-13.
3. Driveways and Parking. Parking areas for multifamily projects shall not be located in a front setback, but shall be provided at the rear or along the side of the site. Multifamily parking areas shall be screened from adjacent residential zoning districts and land uses. See Chapter 19.48 SMC, Parking and Loading Standards. Driveways along collector streets (West Spain Street, Fifth Street West, and Verano Avenue) shall be minimized when possible, by combining driveways, using alleys, or designing development so that access is provided from local streets.
4. Natural Features. Significant environmental amenities, including mature oak trees, shall be preserved by being incorporated into site plan design and layout. Appropriate enhancement or protective measures shall be included in plans where determined necessary by the planning commission. See landscaping standards and design guidelines (SMC 19.40.060), and the tree preservation ordinance for specific tree preservation requirements and guidelines. Environmental features of lesser significance should be incorporated into project site plans when appropriate if justified by the quality of the feature and its relation to the site.
5. Screening and Buffering. Multifamily developments shall require screening and buffering of parking and driveway areas, and noise and light sources. See Chapter 19.46 SMC, Fences, Hedges and Walls, and landscape standards and guidelines (SMC 19.40.060).
B. Building Design.
1. Height and Profile. Proposed structures shall not exceed a maximum height of 30 feet. For structures in excess of 15 feet, side and rear setbacks shall be increased by two feet for each additional five feet in height. See the following design guidelines, and SMC 19.40.040 for height measurement and exceptions.
2. Building Types – Guidelines for Residential Structures. Proposed dwellings should be placed on their sites so that the most narrow dimension of the structure is parallel to the most narrow dimension of the parcel, and so that the primary entrance to the dwelling faces the public street, or is accessible from a porch or other entry element which faces the street.
C. Street and Block Layout. It is intended that streets within the Northwest planning area will be maintained at their existing width and alignment.
Table 3-12. Northwest Area: Infill and Additions
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | |||
|---|---|---|---|---|
R-L | R-S | R-M | MX | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | |||
Front/Street-side1 | 20 ft. | 20 ft. | One-story: 15 ft. Two-story: 20 ft. | 15 ft. |
Side: | 5 ft. minimum, 15 ft. combined | 5 ft. minimum, 15 ft. combined | 5 ft. minimum, 15 ft. combined | None required, except when abutting a residential zone, in which case the corresponding setback in the residential zone shall apply. |
Side: | 2 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,2 in addition to the normal requirement for one-story structures. | 2 ft. for every 5 ft. (or fraction thereof) of height above 20 ft.,2 in addition to the normal requirement for one-story structures. | ||
Rear | 20 ft. | 20 ft. | One-story: 15 ft. Two-story: 20 ft. | |
Garage: | 5 ft. from the front of the primary structure | 20 ft. from the front of the primary structure | 20 ft. from the front of the primary structure | N.A. |
F.A.R./Site Coverage | ||||
F.A.R. | 0.35 | 0.35 | 0.50 | 0.70 |
Site Coverage | 40% | 40% | 60% | 60% |
Open Space | ||||
Commercial | N.A. | N.A. | N.A. | 7 – 11% of site |
Residential: Common | N.A. | N.A. | 300 sq. ft. per unit | 300 sq. ft. per unit, any combination of shared or private. |
Residential: Private | N.A. | N.A. | 75 – 225 sq. ft. per unit | |
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | |||
Primary Structure | 30 ft. | |||
Notes:
1.Front porches may extend up to 10 feet into front setback (or street-side setback for wrap-around porches).
2.Measured at building wall, not ridge.
Table 3-13. Northwest Area: Subdivisions of 5+ Lots
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | |||
|---|---|---|---|---|
R-L | R-S | R-M | MX | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | |||
Front/Street-side1 | 20 ft. | 20 ft. | One-story: 15 ft. Two-story: 20 ft. | 15 ft. |
Side: | 5 ft. minimum, 15 ft. combined | 5 ft. minimum, 15 ft. combined | 5 ft. minimum, 15 ft. combined | None required, except when abutting a residential zone, in which case the corresponding setback in the residential zone shall apply. |
Side: | 2 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,2 in addition to the normal requirement for one-story structures. | 2 ft. for every 5 ft. (or fraction thereof) of height above 20 ft.,2 in addition to the normal requirement for one-story structures. | ||
Rear | 20 ft. | 20 ft. | One-story: 15 ft. Two-story: 20 ft. | |
Garage: | 5 ft. from the front of primary structure | 20 ft. from the front of primary structure | 20 ft. from the front of primary structure | N.A. |
F.A.R./Site Coverage | ||||
F.A.R. | 0.35 | 0.35 | 0.50 | 0.70 |
Site Coverage | 40% | 40% | 60% | 60% |
Open Space | ||||
Commercial | N.A. | N.A. | N.A. | 7 – 11% of site |
Residential: Common | N.A. | N.A. | 300 sq. ft. per unit, | 300 sq. ft. per unit, any combination of shared or private |
Residential: Private | N.A. | N.A. | 75 – 225 sq. ft. per unit | |
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | |||
Primary Structure | 30 ft. | |||
Notes:
1.Front porches may extend up to 10 feet into front setback (or street-side setback for wrap-around porches).
2.Measured at building wall, not ridge.
A. Existing Conditions. The Central-West planning area is large, at 297 acres, and contains a variety of housing types, including low density single-family, mobile home parks, duplexes and fourplexes, as well as large-scale multifamily developments. Sonoma Creek, on the west, represents the area’s most distinct boundary. The West Napa/Sonoma Highway commercial corridor lies to the north, the Downtown district and Broadway to the east, and rural development within the Southwest planning area to the south. The development of this area is recent in terms of the city’s overall history, with the oldest tracts dating back to the 1950s. Within single-family areas, front setbacks tend to be quite consistent (20 feet, usually), less so in the multifamily sections. Most of the streets are developed with monolithic sidewalks rather than planter strips. The major streets within the Central-West area form a grid, continued by some local streets and ignored by others.
Existing land uses include:
1. Low density single-family homes;
2. Two mobile home parks;
3. Multifamily development, including duplexes, triplexes and fourplexes, condominiums, and apartments;
4. Two congregate care facilities;
5. A neighborhood park (Hertenstein Park);
6. Sassarini Elementary School;
7. A hospital; and
8. A small shopping center.
B. Desired Future. The general objective for this area, as expressed in SMC 19.26.020, is to ensure that new infill developments respect their immediate context. Single-family areas should remain single-family with regular setbacks and development in multifamily areas, while having greater flexibility in site design and massing, should clearly respond to conditions on adjacent parcels. Otherwise, the mini-neighborhoods within the planning area risk losing their distinctiveness. In the development or redevelopment of properties on the edge of the planning area, particularly adjacent to the West Napa Street corridor, uses should be laid out to minimize potential conflicts with adjacent commercial development, while maximizing appropriate connections. In order to preserve the city’s largest stock of affordable senior housing, the regular maintenance of the mobile home parks’ grounds and of the individual coaches should be encouraged.
C. Potential Changes. The need for street improvements within the area is limited mainly to traffic calming and pedestrian safety improvements, such as safety improvements to the bike path crossing on West MacArthur Street. Hayes Street, between Bettencourt Street and West MacArthur Street, will ultimately be improved to a full width as adjoining properties develop. In the long term, intersection improvements may be needed at Fifth Street West/Andrieux Street and Fifth Street West/West MacArthur Street. Although a significant environmental feature, Sonoma Creek is largely inaccessible within the planning area, but a bike/pedestrian connection has been developed along it between Oregon Street and Napa Road. The Fryer Creek bike/walking path should be extended, if possible, to connect with Second Street West. Throughout the planning area, gaps in the sidewalks and in street tree plantings need to be filled. (Ord. 2003-02 § 3, 2003).
A. Site Planning Standards.
1. Residential Density. The following residential densities and minimum lot sizes apply to new subdivisions within different zoning districts in the Central-West planning area.
Table 3-14. Lot Size and Residential Density Requirements
Zoning District | Number of Dwellings Per Parcel1 | Minimum Lot Size |
|---|---|---|
R-L | 2 per acre minimum; | 7,500 sq. ft. |
R-S | 3 per acre minimum; | 5,000 sq. ft. |
R-P | 7 per acre maximum | 10 acres |
R-M | 7 per acre minimum; | 4,500 sq. ft. |
R-H | 15 per acre maximum | 3,500 sq. ft. |
C | 20 per acre maximum | 10,000 sq. ft. |
Notes:
1.Densities do not include density bonus. See Chapter 19.44 SMC.
Table 3-15. Central-West Area: Infill and Additions
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | |||||
|---|---|---|---|---|---|---|
R-P | R-L | R-S | R-M | R-H | C | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | |||||
Front/Street-side1 | 20 ft. | 20 ft. | 20 ft. | One-story: 15 ft. Two-story: 20 ft. | 15 ft. | One-story: 15 ft. Two-story: 20 ft. |
Side: | 10 ft. | 5 ft. minimum, 15 ft. combined | 5 ft. minimum, 12 ft. combined | None required, except when abutting a residential zone, in which case the corresponding setback in the residential zone shall apply. | ||
Side: | 20 ft. | 2 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,2 in addition to the normal requirement for one-story structures. | 2 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,2 in addition to the normal requirement for one-story structures. | |||
Rear | 20 ft. | 20 ft. | 20 ft. | One-story: 15 ft. Two-story: 20 ft. | One-story: 12 ft. Two-story: 15 ft. | |
Garage: | N.A. | 5 ft. from the front of the primary structure | 20 ft. from the front of the primary structure | 20 ft. from the front of the primary structure | 20 ft. from the front of the primary structure | N.A. |
F.A.R./Site Coverage | ||||||
F.A.R. | 0.30 | 0.35 | 0.35 | 0.45 | 0.70 | 0.80 |
Site Coverage | 35% | 40% | 40% | 50% | 60% | 60% |
Open Space | See SMC 19.40.070 for design requirements. | |||||
Commercial | N.A. | N.A. | N.A. | N.A. | N.A. | 7 – 11% of site |
Residential: Common | N.A. | N.A. | N.A. | 300 sq. ft. per unit | 300 sq. ft. per unit | 300 sq. ft. per unit, any combination of shared or private |
Residential: Private | N.A. | N.A. | N.A. | 75 – 225 sq. ft. per unit | 75 – 225 sq. ft. per unit | |
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | |||||
Primary Structure | 30 ft. | |||||
Notes:
1.Front porches may extend up to 10 feet into front setback (or street-side setback for wrap-around porches).
2.Measured at building wall, not ridge.
Table 3-16. Central-West Area: Subdivisions of 5+ Lots
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | |||
|---|---|---|---|---|
R-L | R-S | R-M | R-H | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | |||
Front/Street-side1 | A variety of setbacks, compatible with neighborhood conditions, shall normally be required at the discretion of the planning commission. An average setback of 25 feet shall be maintained. | One-story: 15 ft. Two-story: 20 ft. | 15 ft. | |
Side: | 5 ft. minimum, 15 ft. combined | As approved by the planning commission, except that in no case shall a setback of less than 3 ft. be allowed. | 5 ft. minimum, 12 ft. combined | |
Side: | 2 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,2 in addition to the normal requirement for one-story structures. | 2 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,2 in addition to the normal requirement for one-story structures. | ||
Rear | 20 ft. | 20 ft. | One-story: 15 ft. Two-story: 20 ft. | 15 ft. |
Garage: | 5 ft. from the front of the primary structure | 20 ft. from the front of the primary structure | Parking areas (including carports and garages) should normally be located along the sides and to the rear of a property and should be minimized or avoided in front of buildings. | |
F.A.R./Site Coverage | ||||
F.A.R. | 0.35 | 0.35 | 0.45 | 0.70 |
Site Coverage | 40% | 40% | 50% | 60% |
Open Space | See SMC 19.40.070 for design requirements. | |||
Commercial | N.A. | N.A. | N.A. | N.A. |
Residential: Common | N.A. | N.A. | 300 sq. ft. per unit | 300 sq. ft. per unit |
Residential: Private | N.A. | N.A. | 75 – 225 sq. ft. per unit | 75 – 225 sq. ft. per unit |
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | |||
Primary Structure | 30 ft. | |||
Notes:
1.Front porches may extend up to 10 feet into front setback (or street-side setback for wrap-around porches).
2.Measured at building wall, not ridge.
2. Setbacks, Site Coverage, and Open Space. Proposed development shall be designed and constructed in compliance with the requirements set forth in Tables 3-15 and 3-16, preceding.
3. Driveways and Parking. Parking areas for multifamily projects shall not be located in a front setback, but shall be provided at the rear or along the side of the site. Multifamily parking areas shall be screened from adjacent residential zoning districts and land uses. See Chapter 19.48 SMC, Parking and Loading Standards. Driveways along collector streets (West Spain Street, Fifth Street West, and Verano Avenue) shall be minimized when possible, by combining driveways, using alleys, or designing development so that access is provided from local streets.
4. Natural Features. Significant environmental amenities, including Sonoma Creek, Fryer Creek, the west fork of Fryer Creek, related riparian areas, and mature oak trees, shall be preserved by being incorporated into site plan design and layout. Appropriate enhancement or protective measures shall be included in plans where determined necessary by the planning commission. See landscaping standards and design guidelines (SMC 19.40.060), and the tree preservation ordinance for specific tree preservation requirements and guidelines. Environmental features of lesser significance should be incorporated into project site plans when appropriate if justified by the quality of the feature and its relation to the site.
5. Screening and Buffering. Multifamily developments shall require screening and buffering of parking and driveway areas, and noise and light sources (SMC 19.40.030). See Chapter 19.46 SMC, Fences, Hedges and Walls, and landscape standards and guidelines (SMC 19.40.060). A masonry wall may be required of any new development whose rear yard abuts a commercially zoned property.
B. Building Design.
1. Height and Profile. Proposed structures shall not exceed a maximum height of 30 feet. For structures in excess of 15 feet, side and rear setbacks shall be increased by two feet for each additional five feet in height. See the following design guidelines, and SMC 19.40.040 for height measurement and exceptions.
2. Building Types – Guidelines for Residential Structures. Proposed dwellings should be placed on their sites so that the most narrow dimension of the structure is parallel to the most narrow dimension of the parcel, and so that the primary entrance to the dwelling faces the public street, or is accessible from a porch or other entry element which faces the street.
C. Street and Block Layout. It is intended that streets within the Central-West planning area will be maintained at their existing width and alignment. (Ord. 02-2021 § 1(5), 2021; Ord. 03-2004 § 3, 2004; Ord. 2003-02 § 3, 2003).
A. Existing Conditions. The Southwest planning area, which is entirely residential, is marked by sharp contrasts between rural and urban development. Malet Street and Harrington Drive are rural enclaves, developed mainly with older residences. New residential development includes a single-family tract and a series of higher density tracts featuring detached units on small lots. The Southwest area is bounded by rural and agricultural lands outside of the city’s sphere of influence on the south and west, with the Broadway corridor and the gateway at Four Corners to the east, and urban residential development to the north. The Fryer Creek channel bisects the area. No east-west streets traverse the planning area (with the exception of Leveroni Road), due to the presence of the creek, but there is a bicycle/pedestrian connection at the southern end of the channel. This crossing connects bike/pedestrian pathways which run along either side of the channel, providing access to the two neighborhood parks within the planning area.
Existing land uses include:
1. Older, rural density single-family homes;
2. Single-family tract development;
3. Several planned developments;
4. Two neighborhood parks and a wetland preserve; and
5. Scattered vacant parcels, some of them relatively large.
B. Desired Future. The general objectives for this area are to preserve the Harrington and Malet Street areas as rural enclaves and to regulate additions and modifications to existing planned developments. Over time, the unincorporated areas of Malet Street and Harrington Drive will be annexed to the city so that the residents of those areas may have the benefit of reliable water and sewer service. However, these areas are intended to be preserved as pockets of rural development. New development within these areas and future public improvements should be consistent with that goal. Existing and planned single-family developments within the planning area will inevitably contrast with adjacent rural areas. While the general character of development within these areas will be that of urban density single-family residential, transitional design elements should be used, especially at street connections between urban and rural areas. The planned developments within the Southwest area were designed with little room for change. Additions and renovations will be greatly restricted due to the small lot sizes and narrow setbacks associated with these developments.
C. Intended Changes. Harrington Drive and Malet Street west of First Street West will require some level of upgrading, but street sections should reflect and reinforce the rural qualities of those areas. Elsewhere in the planning area, gaps in the sidewalk system need to be closed and, in the long term, sidewalks (with planter strips) will probably be extended along Fifth Street West and Leveroni Road. Except for a connection between Newcomb Street and Malet Street and possible improvements to the intersection of Fifth Street West and Leveroni Road, no major street improvements are planned. For health and safety reasons, water and sewer lines will have to be extended along Malet Street and, in the long term, along Fifth Street West and Leveroni Road. (Ord. 2003-02 § 3, 2003).
A. Site Planning Standards.
1. Residential Density. The following residential densities and minimum lot sizes apply to new subdivisions within the different zoning districts of the Southwest planning area.
Table 3-17. Lot Size and Residential Density Requirements
Zoning District | Number of Dwellings Per Parcel1 | Minimum Lot Size |
|---|---|---|
R-R | 2 per acre maximum | 20,000 sq. ft. |
R-L | 2 per acre minimum; | 7,500 sq. ft. |
R-S | 3 per acre minimum; | 7,500 sq. ft. |
R-M | 7 per acre minimum; | 6,000 sq. ft. |
Notes:
1.Densities do not include density bonus. See Chapter 19.44 SMC.
2. Setbacks, Site Coverage, and Open Space. Proposed development shall be designed and constructed in compliance with the requirements set forth in Table 3-18, following.
Table 3-18. Southwest Area: Infill, Additions and Replacement Structures
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | |||
|---|---|---|---|---|
R-R | R-L | R-S | R-M | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | |||
Front/Street-side1 | One-story: 20 ft. Two-story:2 30 ft. | One-story: 20 ft. Two-story:2 30 ft. | 20 ft. | 20 ft. |
Side: | 15 ft. | 15 ft. | 5 ft. minimum, 12 ft. combined | 5 ft. minimum, 12 ft. combined |
Side: | 15 ft. | 15 ft. | 2 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,2 in addition to the normal requirement for one-story structures. | 2 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,2 in addition to the normal requirement for one-story structures. |
Rear | 30 ft. | 30 ft. | 20 ft. | 20 ft. |
Garage: | 20 ft. from the front of the primary structure | 20 ft. from the front of the primary structure | 5 ft. from the front of the primary structure | 20 ft. from the front of the primary structure |
F.A.R./Site Coverage | ||||
F.A.R. | 0.20 | 0.35 | 0.35 | 0.45 |
Site Coverage | 25% | 40% | 40% | 50% |
Open Space | See SMC 19.40.070 for design requirements. | |||
Residential: Common | N.A. | N.A. | N.A. | N.A. |
Residential: Private | N.A. | N.A. | N.A. | N.A. |
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | |||
Primary Structure | 30 ft. | |||
Notes:
1.Front porches may extend up to 10 feet into front setback (or street-side setback for wrap-around porches).
2.Measured at wall, not ridge.
3. Driveways and Parking. Parking areas for multifamily projects shall not be located in a front setback, but shall be provided at the rear or along the side of the site. Multifamily parking areas shall be screened from adjacent residential zoning districts and land uses. See Chapter 19.48 SMC, Parking and Loading Standards. Driveways along collector streets (Fifth Street West, Leveroni Road) shall be minimized when possible, by combining driveways, using alleys, or designing development so that access is provided from local streets.
4. Natural Features. Significant environmental amenities, including Fryer Creek and associated riparian areas, wetlands, and mature oak trees, shall be preserved by being incorporated into site plan design and layout. Appropriate enhancement or protective measures shall be included in plans where determined necessary by the planning commission. See landscaping standards and design guidelines (SMC 19.40.060), and the tree preservation ordinance for specific tree preservation requirements and guidelines. Environmental features of lesser significance should be incorporated into project site plans when appropriate if justified by the quality of the feature and its relation to the site.
5. Screening and Buffering. Multifamily developments shall require screening and buffering of parking and driveway areas, and noise and light sources. See Chapter 19.46 SMC, Fences, Hedges and Walls, and landscape standards and guidelines (SMC 19.40.060).
B. Building Design.
1. Height and Profile. Proposed structures shall not exceed a maximum height of 30 feet. For structures in excess of 15 feet, side and rear setbacks shall be increased by two feet for each additional five feet in height. See the following design guidelines, and SMC 19.40.040 for height measurement and exceptions.
2. Building Types – Guidelines for Residential Structures. Proposed dwellings should be placed on their sites so that the most narrow dimension of the structure is parallel to the most narrow dimension of the parcel, and so that the primary entrance to the dwelling faces the public street, or is accessible from a porch or other entry element which faces the street.
C. Street and Block Layout. It is intended that streets within the Southwest planning area will be maintained at their existing width and alignment with the following exceptions:
1. Malet Street. West of First Street West, Malet Street should be maintained in a rural configuration; however, for safety reasons, it will need to be widened in some areas to provide a consistent two-lane section.
2. Harrington Drive. Harrington Drive should be maintained as a rural street, but widening in some areas may be needed to achieve a safe two-lane section. (Ord. 02-2021 § 1(6), 2021; Ord. 03-2004 § 3, 2004; Ord. 2003-02 § 3, 2003).
A. Existing Conditions. Although the Gateway commercial district encompasses only 59 acres, its future development is crucial to the identity of Sonoma. It forms the southern entrance to the city and marks the division between the rural and agricultural character of the unincorporated area and the urban features of the city. The district is bounded by existing and planned multifamily development to the west and north, rural residential, agricultural, and vacant parcels to the south, and Nathanson Creek to the east. Broadway and Napa/Leveroni Road divide the district into quarters.
Existing land uses include:
1. Single-family homes on large lots;
2. A hardware and garden supply center;
3. A hotel;
4. A local market, and small car repair shop, a furniture store, and a mixed use building;
5. A PG&E substation;
6. A vineyard;
7. Traintown (a large, landscaped recreation facility); and
8. Vacant parcels, totaling more than 15 acres.
B. Desired Future. The Gateway district should provide an attractive and distinctive entrance to Sonoma. In terms of uses, the Gateway district should provide a mix of resident- and visitor-serving uses, along with a substantial residential component. The district should complement, not compete with, the Plaza, and should provide shopping and service opportunities for existing and future residential development in southern Sonoma. In terms of site planning, architecture, and landscaping, new development and redevelopment should draw from the best examples of Sonoma. Existing local serving uses within the district should be retained and encouraged to upgrade in keeping with the overall goals for the area.
The development of the Gateway district will contrast with the rural and agricultural lands of the unincorporated territory to the south, east and west. Design sensitivity will be needed to make this contrast pleasing rather than jarring. Larger setbacks and lower building heights are appropriate at the edge properties of the district, with smaller setbacks and higher buildings at the core. It is expected that the hotel at the northwest quadrant of the district will anchor other visitor-serving uses and encourage the improvement of other properties in the area.
Pedestrians must be better served – by extending sidewalks with planter strips along major roads, by reducing driveway cuts, and by requiring pedestrian pathways and connections in new development. A street tree planting program should be developed and implemented in conjunction with frontage improvements.
C. Potential Changes. In terms of road improvements, the southernmost segment of Broadway within the Gateway district will ultimately be widened to three lanes. Napa and Leveroni Road may not need to be widened, but shoulder improvements will be necessary in some areas, as well as turn-pockets. The intersection of Broadway and Napa/Leveroni Road will need to be improved with landscaping, sidewalks, and crosswalks. (Ord. 2003-02 § 3, 2003).
A. Site Planning Standards.
1. Residential Density. The following residential densities and minimum lot sizes apply to new subdivisions within the Gateway district.
Table 3-19. Lot Size and Residential Density Requirements
Zoning District | Number of Dwellings Per Parcel1 | Minimum Lot Size |
|---|---|---|
C-G | 20 per acre maximum | 10,000 sq. ft. |
Notes:
1.Densities do not include density bonus. See Chapter 19.44 SMC.
2. Setbacks, Site Coverage, and Open Space. Proposed development shall be designed and constructed in compliance with the requirements set forth in Tables 3-20 and 3-21, following.
3. Driveways and Parking. Parking areas should be located at the rear or along the side of properties and should be discouraged in front of buildings. Parking areas shall be screened from adjacent residential zoning districts and land uses. See Chapter 19.48 SMC, Parking and Loading Standards. Driveways along collector streets (Broadway, Napa Road, Leveroni Road) shall be minimized when possible, by combining driveways, using alleys, or designing development so that access is provided from local streets.
Table 3-20. Gateway District: Additions and Renovations
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | |
|---|---|---|
Edge Properties (C-G) | Core Properties (C-G) | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | |
Front/Street-side1 | 20 ft. or consistent with existing structure | None required |
Side | None required, except 1) when abutting a residential zone, in which case the corresponding setback in the residential zone shall apply; 2) when abutting the sphere of influence, in which case a 20 ft. setback is required. | None required |
Rear | None required, except when abutting a residential zone or the sphere of influence, in which case a 20 ft. setback is required. | None required |
Parking | Garages shall be set back 20 feet from the main structure. Parking areas should normally be located along the sides and to the rear of a property and should be minimized or avoided in front of buildings. For the expansion or renovation of existing parking areas subject to planning approval, the review authority may require additional landscaping and/or the consolidation of driveway cuts. | |
F.A.R./Site Coverage | ||
F.A.R. | 0.80 | |
Site Coverage | 40% | |
Open Space | ||
Commercial | 7% – 11% of site | |
Residential | 300 sq. ft. per unit (any combination of shared or private) | |
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | |
Primary Structure | 30 ft. | 35 ft. |
Notes:
Table 3-21. Gateway District: New Development
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | |
|---|---|---|
Edge Properties (C-G) | Core Properties (C-G) | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | |
Front/Street-side1 | Broadway: 30 feet Napa/Leveroni: 20 feet Interior drives: None required. | None required |
Side | None required, except 1) when abutting a residential zone, in which case the corresponding setback in the residential zone shall apply; 2) when abutting the sphere of influence, in which case a 20 ft. setback is required. | None required |
Rear | None required, except when abutting a residential zone or the sphere of influence, in which case a 20 ft. setback is required. | None required |
Parking | Garages shall be set back 20 feet from the main structure. Parking areas should normally be located along the sides and to the rear of a property and should be minimized or avoided in front of buildings. For the expansion or renovation of existing parking areas subject to planning approval, the review authority may require additional landscaping and/or the consolidation of driveway cuts. | |
F.A.R./Site Coverage | ||
F.A.R. | 0.80 | |
Site Coverage | 40% | |
Open Space | ||
Commercial | 7% – 11% of site | |
Residential | 300 sq. ft. per unit (any combination of shared or private) | |
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | |
Primary Structure | 30 ft. | 35 ft. |
Notes:
4. Natural Features. Significant environmental amenities, including Nathanson Creek, related riparian areas, and mature oak trees, shall be preserved by being incorporated into site plan design and layout. Appropriate enhancement or protective measures shall be included in plans where determined necessary by the planning commission. See landscaping standards and design guidelines (SMC 19.40.060), and the tree preservation ordinance for specific tree preservation requirements and guidelines. Environmental features of lesser significance should be incorporated into project site plans when appropriate if justified by the quality of the feature and its relation to the site.
5. Screening and Buffering. Multifamily developments shall require screening and buffering of parking and driveway areas, and noise and light sources. See Chapter 19.46 SMC, Fences, Hedges and Walls, and landscape standards and guidelines (SMC 19.40.060).
B. Building Design.
1. Height and Profile. Proposed structures in the core area shall not exceed a maximum height of 35 feet. Outside of the core area the maximum building height shall be 30 feet. See SMC 19.40.040 for height measurement and exceptions.
2. Building Types – Guidelines for Commercial, Mixed Use and Multifamily Residential Structures. New construction and alterations to existing structures should be designed to establish the Four Corners area as a distinctive gateway to Sonoma. In reviewing proposals for new development and redevelopment, the review authority shall make use of the following guidelines:
a. Site and building design should enhance the streetscape. Primary building entrances, especially for commercial uses, should be oriented toward the street and accessible from the sidewalk.
b. Allow existing uses to remain and, subject to use permit review, to expand or intensify, in conformance with the provisions of this development code (see Chapter 19.82 SMC, Nonconforming Structures, Uses and Parcels).
c. Encourage pedestrian connections between developments and to adjoining residential areas.
d. Site design and architectural features that contribute to pedestrian comfort and interest, such as awnings, recessed entrances, arcades, courtyards, paseos, alleys, and patios, are encouraged.
e. The massing of larger buildings (5,000 square feet or greater) should be broken down to an appropriate scale through the use of storefronts and breaks in the facade.
f. Architectural styles and details traditional to Sonoma should be used. The use of durable, high quality materials is encouraged. Industrial and strip building types and materials (e.g., concrete tilt-up structures) are not appropriate to the Gateway district.
g. Encourage variety in building design features (e.g., height, articulation, shape, and mass) in order to enhance visual diversity, preserve scenic vistas, and avoid strip-style development.
h. Building types, architectural details and signs having a generic or corporate appearance are strongly discouraged. Chain stores and franchises are not prohibited in the Gateway district, but such uses must respect and contribute to the importance of the area as the front door to Sonoma.
i. Development along the sphere of influence should provide a clear and suitable transition to adjacent rural areas in terms of site design, architecture and landscaping. Buildings should take advantage of outward views.
j. In the core area, promote high-intensity uses and place buildings close to the street (zero to 15 feet). Encourage the use of two-story buildings. (Ord. 10-2025 § 2 (Exh. A), 2025; Ord. 02-2021 § 1(7), 2021; Ord. 06-2013 § 3, 2013; Ord. 03-2004 § 3, 2004; Ord. 2003-02 § 3, 2003).
A. Existing Conditions. Connecting the southern gateway to the downtown, the Broadway corridor possesses considerable historic, visual, and functional significance. Historically, Broadway completes the Camino Real or “Royal Road” of Spanish/Mexican mission settlements. Visually, Broadway provides a grand entrance to downtown Sonoma with its axial view of the Plaza, City Hall, and the northern hills, its 110-foot right-of-way, and its procession of street trees. Functionally, Broadway is a segment of State Route 12 and is a major traffic arterial. The Broadway corridor is flanked by residential areas, with Nathanson Creek forming its eastern edge and First Street West its western boundary. Parcels along Broadway tend to be long and narrow (to widths of 50 feet) and some have double frontages.
North of MacArthur Street, Broadway possesses a clear visual organization defined by historic structures with landscaped front yards and generally regular setbacks, street trees, and a consistent street width. South Broadway, in contrast, features a patchwork of older (but not historic) commercial buildings, new commercial and multifamily residential development, historic single-family homes and remnant agricultural buildings. These uses are interspersed with vacant parcels. However, the dominant use on South Broadway, in terms of area, appearance, and intensity, is the high school. Street improvements along South Broadway are inconsistent.
Existing land uses include:
1. Retail, office and mixed use, often in adaptively reused historic buildings;
2. Single-family residences;
3. Duplexes, apartments, and small multifamily development;
4. A hotel;
5. The Sonoma Valley High School and the Adele Harrison Middle School;
6. A nursing home; and
7. Scattered vacant parcels.
B. Desired Future. Historic structures on Broadway will be preserved, restored and re-used, while new development will respect and contribute to the character of the area. Mixed use development will be directed so as to retain the predominantly residential character of First Street West while enlivening Broadway with small-scale retail, office, and residential uses. With respect to the high school and the middle school, careful placement of playing fields, parking and school uses will be required in order to assure compatibility with neighboring residential areas.
C. Potential Changes. South of MacArthur Street, Broadway will be improved to a consistent configuration. Gaps in the sidewalk system and street tree plantings will be closed. Intersection improvements may ultimately be needed at Broadway/Andrieux Street. With the expansion of the high school, its main entrance has been aligned with Newcomb Street and a traffic signal has been installed at that intersection. The gains in pedestrian safety associated with this improvement will only be fully realized if the high school frontage is redesigned to prevent pedestrians from crossing at the Malet Street intersection. (Ord. 2003-02 § 3, 2003).
A. Site Planning Standards.
1. Residential Density. The following residential densities and minimum lot sizes apply to new subdivisions within the different zoning districts of the Broadway corridor:
Table 3-22. Lot Size and Residential Density Requirements
Zoning District | Number of Dwellings Per Parcel1 | Minimum Lot Size |
|---|---|---|
C | 20 per acre maximum | 8,000 sq. ft. |
MX | 20 per acre maximum | 8,000 sq. ft. |
Notes:
1.Densities do not include density bonus. See Chapter 19.44 SMC.
2. Setbacks, Site Coverage, and Open Space. Proposed development shall be designed and constructed in compliance with the requirements set forth in Tables 3-23 and 3-24, following.
Table 3-23. Broadway Corridor: Additions and Replacement Structures
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | |
|---|---|---|
C | MX | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | |
Front/Street-side1 | Replacement structures: The same location as the original structure.2 Additions to existing structures: 15 ft. | Replacement structures: The same location as the original structure.2 Additions to existing structures: 20 ft. |
Side: | None required, except when abutting a residential zone, in which case the corresponding setback in the residential zone shall apply. | 5 ft. minimum, 15 ft. combined |
Side: | 2 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,3 in addition to the normal requirement for one-story structures. | |
Rear | 15 ft., except when abutting a residential zone, in which case the corresponding setback in the residential zone shall apply. | |
Parking | Garages shall be set back 20 feet from the main structure. Parking areas should normally be located along the sides and to the rear of a property and should be minimized or avoided in front of buildings. | |
F.A.R./Site Coverage | ||
F.A.R. | 0.60 | 1.0 |
Site Coverage | 60% | 60% |
Open Space | See SMC 19.40.070 for design requirements. | |
Commercial | 7% – 11% of site | 7% – 11% of site |
Residential | 300 sq. ft. per unit (any combination of shared or private) | 300 sq. ft. per unit (any combination of shared or private) |
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | |
Primary Structure | 30 ft. | 30 ft. |
Notes:
1.A front porch may extend up to 10 feet into front setback (or street-side setback for wrap-around porches).
2.A replacement structure shall not exceed 10 percent of the height or area of the original structure unless a use permit is obtained.
3.Measured at wall, not ridge.
Table 3-24. Broadway Corridor: New Development
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | |
|---|---|---|
C | MX | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | |
Front/Street-side1 | 15 ft. or within the range of adjacent structures on either side. | |
Side: One-Story | None required, except when abutting a residential zone, in which case the corresponding setback in the residential zone shall apply. | 5 ft. minimum, 15 ft. combined |
Side: Two-Story | 2 ft. for every five ft. (or fraction thereof) of height above 15 ft.,2 in addition to the normal requirement for one-story structures. | |
Rear | 15 ft., except when abutting a residential zone, in which case the corresponding setback in the residential zone shall apply. | |
Parking | Garages shall be set back 20 ft. from the main structure. Parking areas should normally be located along the sides and to the rear of a property and should be minimized or avoided in front of buildings. | |
F.A.R./Site Coverage | ||
F.A.R. | 0.60 | 1.0 |
Site Coverage | 60% | 60% |
Open Space | See SMC 19.40.070 for design requirements. | |
Commercial | 7% – 11% of site | 7% – 11% of site |
Residential | 300 sq. ft. per unit (any combination of shared or private) | 300 sq. ft. per unit (any combination of shared or private) |
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | |
Primary Structure | 30 ft. | 30 ft. |
Notes:
1.A front porch may extend up to 10 feet into front setback (or street-side setback for wrap-around porches).
2.Measured at wall, not ridge.
3. Driveways and Parking. Parking areas should be located at the rear or along the side of properties and should be discouraged in front of buildings. Parking areas shall be screened from adjacent residential zoning districts and land uses. See Chapter 19.48 SMC, Parking and Loading Standards. Driveways along Broadway shall be minimized when possible, by combining driveways, using alleys, or designing development so that access is provided from local streets.
4. Natural Features. Natural environmental amenities including creeks, streams and other drainage courses; and mature trees shall be preserved by being incorporated into site plan design and layout. Appropriate enhancement or protective measures shall be included in plans where determined necessary by the planning commission. See creek development (SMC 19.40.020) and landscaping standards and design guidelines (SMC 19.40.060), and the tree preservation ordinance for specific tree preservation requirements and guidelines.
5. Screening and Buffering. Multifamily developments shall require screening and buffering of parking and driveway areas, and noise and light sources. See Chapter 19.46 SMC, Fences, Hedges and Walls, and landscape standards and guidelines (SMC 19.40.060).
B. Building Design.
1. Height and Profile. Proposed structures shall not exceed a maximum height of 30 feet. For structures in excess of 15 feet located within the MX zone, side setbacks shall be increased by two feet for each additional five feet in height. See SMC 19.40.040 for height measurement and exceptions.
2. Building Types – Guidelines for Residential Structures. Proposed dwellings should be placed on their sites so that the narrow dimension of the structure is parallel to the narrow dimension of the parcel, and so that the primary entrance to the dwelling faces the public street, or is accessible from a porch or other entry element which faces the street.
3. Building Types – Guidelines for Commercial and Mixed Use Structures. New commercial and mixed use buildings and alterations to existing structures should contribute to the established Broadway streetscape. In reviewing proposals for commercial and mixed development and redevelopment, the review authority shall make use of the following guidelines:
a. Proposed dwellings should be placed on their sites so that the narrow dimension of the structure is parallel to the narrow dimension of the parcel, and so that the primary entrance to the building faces the public street.
b. Buildings should reinforce the scale, massing, proportions and detailing established by other significant historic buildings in the vicinity (if any).
c. The massing of larger commercial and mixed use buildings (5,000 square feet or greater) should be broken down to an appropriate scale through the use of storefronts and breaks in the facade.
d. Architectural styles and details that reflect the Sonoma vernacular should be used. Along Broadway, Victorian and other residential architectural styles are more typical than purely commercial building types. The use of durable, high quality materials is encouraged.
e. Site design and architectural features that contribute to pedestrian comfort and interest, such as awnings, recessed entrances, and alleys, are encouraged.
f. In renovations involving historic buildings, authentic architectural details should be preserved and any new detailing and materials should be compatible with those of the existing structure. Pre-existing alterations that diminish a building’s historic qualities should be removed when the opportunity arises. (See Chapter 19.42 SMC, Historic Preservation and Infill in the Historic Zone.)
g. Building types, architectural details and signs having a generic or corporate appearance are strongly discouraged. Chain stores and franchises are not prohibited along Broadway, but such uses must respect and contribute to the historic qualities of the area in terms of building design and signs. (Ord. 10-2025 § 2 (Exh. A), 2025; Ord. 02-2021 § 1(8), 2021; Ord. 06-2013 § 3, 2013; Ord. 03-2004 § 3, 2004; Ord. 2003-02 § 3, 2003).
A. Existing Conditions. The Downtown district is the heart of Sonoma. The district centers on the Plaza and the historic downtown, collectively designated as a National Historic Landmark. The Sonoma Plaza is an eight-acre park, framed by historic buildings, with City Hall at its center. The downtown encompasses a lively concentration of small businesses, including restaurants, bookstores, specialty retail, and offices. A cluster of historically significant buildings on the north side of the district, including the mission and the barracks, are managed as a state park. Outside of the original downtown area, the western portion of the district contains a mix of single-family, multifamily, retail, and office development, including a modern shopping center. Multifamily development lies at the northwest and southeast edges of the district.
Existing land uses include:
1. The Sonoma Plaza and City Hall;
2. Retail uses, offices and apartments in historic buildings;
3. Restaurants, cafes, bakeries, and delicatessens;
4. Hotels;
6. Modern retail and office development;
7. A shopping center;
8. Condominiums, apartments, and PUDs; and
9. Older single-family development.
B. Desired Future. The primary objectives for the Downtown district are to preserve and enhance its historic character and to retain and promote its economic vitality as a commercial, cultural, and civic center attractive to residents and visitors. New construction and new uses should build upon the established character of the downtown. High quality architecture, pedestrian-friendly design, and uses which draw locals as well as tourists are reasonable expectations for Sonoma’s most distinctive district. While commercial uses will remain preeminent, the downtown’s housing stock should be preserved and extended. Multifamily and live-work development in the town center provide customers for downtown businesses and reduce automobile dependence. Higher density residential development at the edges of the district confers similar benefits and establishes a transition to lower density residential areas.
Many locals prefer to walk to the Plaza rather than drive, a choice which should be made as convenient and enjoyable as possible. Pedestrian amenities and connections should be extended throughout the district. The continued development of readily accessible off-street parking is also needed, as by choice or necessity, many visitors, local shoppers, and those who live or work in the downtown area will drive. In developing new parking or renovating existing parking, the creation of driveway connections between parking areas and pedestrian connections to commercial destinations should be emphasized.
C. Potential Changes. Opportunities to create additional off-street parking should be pursued and interior connections between existing off-street parking lots should be created. A pedestrian path linking the Plaza with Depot Park and with the Sonoma Overlook Trail is planned in conjunction with improvements to the Casa Grande parking lot and the Maysonnave property. Additional plantings are needed to fill gaps in the layout of street trees. In terms of traffic improvements, West Napa Street between First Street West and Second Street West may need to be reconfigured as a three-lane street section. The re-use or other disposition of the former fire station property on Broadway and Patten Street will need to be considered. (Ord. 2003-02 § 3, 2003).
A. Site Planning Standards.
1. Residential Density. The following residential densities apply to the zoning districts within the Downtown district:
Table 3-25. Lot Size and Residential Density Requirements
Zoning District | Number of Dwellings Per Parcel1 | Minimum Lot Size |
|---|---|---|
R-L | 2 per acre, minimum 5 per acre, maximum | 7,500 sq. ft. |
R-M | 7 per acre minimum 11 per acre maximum | 5,000 sq. ft. |
R-O | 25 per acre maximum | 4,500 sq. ft. |
MX | 20 per acre maximum | 7,000 sq. ft. |
C | 20 per acre maximum | 7,000 sq. ft. |
Notes:
1.Densities do not include density bonus. See Chapter 19.44 SMC.
Table 3-26. Downtown District: Additions and Replacement Structures
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | ||||
|---|---|---|---|---|---|
R-L | R-M | R-O | MX | C | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | ||||
Front/Street-side1 | In line with existing structure or 20 ft. | In line with existing structure or 15 ft. | None required | In line with existing structure or 15 ft. | None required |
Side: | 5 ft. minimum, 15 ft. combined | 5 ft. minimum, 15 ft. combined | 8 ft. | None required, except when abutting a residential zone, in which case the corresponding setback in the residential zone shall apply. | |
Side: | 2 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,2 in addition to the normal requirement for one-story structures. | 8 ft. | |||
Rear | 20 ft. | One-story: 15 ft. Two-story: 20 ft. | 12 ft. | None required | |
Garage: Front | Garages shall be set back 20 feet from the main structure (residential development). Parking areas should normally be located along the sides and to the rear of a property and should be minimized or avoided in front of buildings. For the expansion or renovation of existing parking areas subject to planning approval, the review authority may require additional landscaping and/or the consolidation of driveway cuts. | ||||
F.A.R./Site Coverage | |||||
F.A.R. | 0.35 | 0.50 | 0.70 | 1.20 | 2.0 |
Site Coverage | 40% | 60% | 65% | 70% | 100% |
Open Space | |||||
Commercial | N.A. | N.A. | N.A. | 25% of site | 10% of site |
Residential: Common | N.A. | 300 sq. ft. per unit | 300 sq. ft. per unit, any combination of shared or private | 250 sq. ft. per unit, any combination of shared or private | 200 sq. ft. per unit, any combination of shared or private |
Residential: Private | N.A. | 75 – 225 sq. ft. per unit | |||
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | ||||
Primary Structure | 30 ft. | 30 ft. | 30 ft. | 30 ft. | 35 ft. |
Notes:
1.Front porches may extend up to 10 feet into front setback (or street-side setback for wrap-around porches).
2.Measured at building wall, not ridge.
Table 3-27. Downtown District: New Development
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | ||||
|---|---|---|---|---|---|
R-L | R-M | R-O | MX | C | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | ||||
Front/Street-side1 | 20 ft. | 10 ft. | None required | 10 ft. | None required |
Side: | 5 ft. minimum, 15 ft. combined | 5 ft. minimum, 15 ft. combined | 8 ft. | None required, except when abutting a residential zone, in which case the corresponding setback in the residential zone shall apply. | |
Side: | 2 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,2 in addition to the normal requirement for one-story structures. | 8 ft. | |||
Rear | 20 ft. | One-story: 15 ft. Two-story: 20 ft. | 12 ft. | None required | |
Garage: Front | Garages shall be set back 20 feet from the main structure (residential development). Parking areas should normally be located along the sides and to the rear of a property and should be minimized or avoided in front of buildings. For the expansion or renovation of existing parking areas subject to planning approval, the review authority may require additional landscaping and/or the consolidation of driveway cuts. | ||||
F.A.R./Site Coverage | |||||
F.A.R. | 0.35 | 0.50 | 0.70 | 1.20 | 2.0 |
Site Coverage | 40% | 60% | 65% | 70% | 100% |
Open Space | |||||
Commercial | N.A. | N.A. | N.A. | 25% of site | 10% of site |
Residential: Common | N.A. | 300 sq. ft. per unit | 300 sq. ft. per unit, any combination of shared or private | 400 sq. ft. per unit, any combination of shared or private | 300 sq. ft. per unit, any combination of shared or private |
Residential: Private | N.A. | 75 – 225 sq. ft. per unit | |||
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | ||||
Primary Structure | 30 ft. | 30 ft. | 30 ft. | 30 ft. | 35 ft. |
Notes:
1.Front porches may extend up to 10 feet into front setback (or street-side setback for wrap-around porches).
2.Measured at building wall, not ridge.
2. Setbacks, Site Coverage, and Open Space. Proposed development shall be designed and constructed in compliance with the requirements set forth in Tables 3-26 and 3-27, preceding.
3. Driveways and Parking. Parking areas should be located at the rear or along the side of properties and should be discouraged in front of buildings. Parking areas shall be screened from adjacent residential zoning districts and land uses. See Chapter 19.48 SMC, Parking and Loading Standards. Throughout the district, driveway cuts shall be minimized when possible, by combining driveways, using alleys, or designing development so that access is provided from local streets.
4. Natural Features. Significant environmental amenities such as creeks, streams and other drainage courses, and mature trees, should be preserved by being incorporated into site plan design and layout. Appropriate enhancement or protective measures shall be included in plans where determined necessary by the planning commission. See creek setback (SMC 19.40.020) and landscaping standards and design guidelines (SMC 19.40.060), and the tree preservation ordinance for specific tree preservation requirements and guidelines.
5. Screening and Buffering. Multifamily developments shall require screening and buffering of parking and driveway areas, and noise and light sources. See Chapter 19.46 SMC, Fences, Hedges and Walls, and landscape standards and guidelines (SMC 19.40.060).
B. Building Design.
1. Height and Profile. Proposed structures shall not exceed a maximum height of 35 feet in the Commercial zoning district and 30 feet in the Mixed Use and R-O zoning districts, except that a 36-foot height may be allowed at the discretion of the planning commission for new developments that include a third floor residential component. Within the R-L, R-M, and P zoning districts, the maximum height shall be 30 feet. For structures in excess of 15 feet in the R-M and R-O districts, side and rear setbacks shall be increased by two feet for each additional five feet in height. See the following design guidelines, and SMC 19.40.040 for height measurement and exceptions.
2. Building Types – Guidelines for Residential Structures. Proposed dwellings should be placed on their sites so that the most narrow dimension of the structure is parallel to the most narrow dimension of the parcel, and so that the primary entrance to the dwelling faces the public street, or is accessible from a porch or other entry element which faces the street.
3. Building Types – Guidelines for Commercial and Mixed Use Structures. New commercial and mixed use buildings and alterations to existing structures should reinforce the authentic historic character of the downtown district. In reviewing proposals for commercial and mixed use development and redevelopment, the review authority shall make use of the following guidelines:
a. Buildings should reinforce the scale, massing, proportions and detailing established by other significant historic buildings in the vicinity (if any).
b. The massing of larger commercial and mixed use buildings (5,000 square feet or greater) should be broken down to an appropriate scale through the use of storefronts and breaks in the facade.
c. Architectural styles and details that reflect the Sonoma vernacular should be used. In the Downtown district, examples include stone, stucco, pressed metal, transoms, base tile, and glass block. The use of durable, high quality materials is encouraged.
d. Site design and architectural features that contribute to pedestrian comfort and interest, such as awnings, recessed entrances, paseos, alleys, and patios, are encouraged.
e. In renovations involving historic buildings, authentic details should be preserved and any new detailing and materials should be compatible with those of the existing structure. Pre-existing alterations that diminish a building’s historic qualities should be removed when the opportunity arises. (See Chapter 19.42 SMC, Historic Preservation and Infill in the Historic Zone.)
f. Building types, architectural details and signs having a generic or corporate appearance are strongly discouraged. Chain stores and franchises are not prohibited in the Downtown district, but such uses must respect and contribute to the historic qualities of the area in terms of building design and signs. (Ord. 10-2025 § 2 (Exh. A), 2025; Ord. 02-2021 § 1(9), 2021; Ord. 06-2013 § 3, 2013; Ord. 03-2004 § 3, 2004; Ord. 2003-02 § 3, 2003).
A. Existing Conditions. Located in west and northwest Sonoma, the West Napa Street/Sonoma Highway corridor is a commercial strip comprised of segments of State Highway 12. Beginning at West Napa Street/Third Street West, it extends westward along West Napa Street to Riverside Drive, then northward along the Sonoma Highway to Harley Street. Although it contains a wide variety of uses and building types, many of the blocks within the corridor present a pleasing appearance and exhibit a high degree of visual organization. The corridor is also punctuated by shopping centers with expansive parking lots, some only lightly landscaped, which break the rhythm established by smaller-scale development. Still other segments are more notable for their natural features and present a distinctly rural appearance (Sonoma Creek is a significant, if underutilized, natural amenity). Throughout the corridor, there are axial views of the hills surrounding Sonoma. West Napa Street and the Sonoma Highway are the city’s primary collectors and the corridor contains the most heavily travelled streets in Sonoma.
Existing land uses include:
1. Shopping centers of various sizes;
2. Smaller-scale modern commercial development, including banks and professional offices;
3. Small office and service uses in converted residences;
4. Three car dealerships and various other auto-related uses;
5. Restaurants, fast-food and otherwise;
6. Small multifamily developments and scattered single-family residences;
7. A mobile home park;
8. The Sonoma Valley Library; and
9. The St. Francis de Solano Church.
B. Desired Future. While fulfilling its role as a traffic artery, the West Napa Street/Sonoma Highway corridor should be upgraded visually and made kinder to pedestrians. Towards these ends, a program for filling gaps in the sidewalk and street tree system should be developed and implemented. When frontage improvements are required of new development and redevelopment, planter strips should be used rather than monolithic sidewalk. New development and redevelopment should incorporate any desirable site features, especially trees and existing buildings having a street presence. Driveway cuts should be minimized, especially through the use of shared access, and new parking should be located in the back of properties. Because much of the corridor backs onto residential development, site plan relationships must be carefully evaluated. Ideally, new commercial uses should be designed to relate to the extent feasible with adjacent residential development; at a minimum, adequate screening and buffering are required.
C. Intended Changes. The improvement of West Napa/Seventh Street West is necessary for safe pedestrian access to the library. Safety improvements are also needed at Sonoma Highway, where the bike path ends, in order to address unsafe pedestrian crossings in that area. It is projected that additional intersection improvements will be needed at West Napa Street/Fifth Street West and the county has expressed the intention of widening the Riverside Bridge and making adjustments to the West Napa/Sonoma Highway/Riverside intersection. Any improvements to that location should be viewed as an opportunity to beautify the intersection through additional landscaping. (Ord. 2003-02 § 3, 2003).
A. Site Planning Standards.
1. Residential Density. The following residential densities and minimum lot sizes apply to new subdivisions within different zoning districts in the West Napa/Sonoma Corridor:
Table 3-28. Lot Size and Residential Density Requirements
Zoning District | Number of Dwellings Per Parcel1 | Minimum Lot Size |
|---|---|---|
R-M | 7 per acre minimum 11 per acre maximum | 5,000 sq. ft. |
R-P | 7 per acre maximum | 10 acres |
MX | 20 per acre maximum | 8,000 sq. ft. |
C | 20 per acre maximum | 10,000 sq. ft. |
C-G | 20 per acre maximum | 10,000 sq. ft. |
Notes:
1.Densities do not include density bonus. See Chapter 19.44 SMC.
Table 3-29. Napa/Sonoma Corridor: Additions and Replacement Structures
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | ||||
|---|---|---|---|---|---|
R-P | R-M | MX | C | C-G | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | ||||
Front/Street-side1 | 20 ft. | One-story: 15 ft. Two-story: 25 ft. | |||
Side: | 10 ft. | 5 ft. minimum, 12 ft. combined | None required, except when abutting a residential zone, in which case the corresponding setback in the residential zone shall apply. | ||
Side: | 20 ft. | 2 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,2 in addition to the normal requirement for one-story structures | |||
Rear | 10 ft. | 15 ft., except when abutting the R-L zone, in which case a minimum 20 ft. setback is required. | None required | ||
Garage: Front | N.A. | Garages shall be set back 20 feet from the main structure (residential development). Parking areas should normally be located along the sides and to the rear of a property and should be minimized or avoided in front of buildings. For the expansion or renovation of existing parking areas subject to planning approval, the review authority may require additional landscaping and/or the consolidation of driveway cuts. | |||
F.A.R./Site Coverage | |||||
F.A.R. | 0.20 | 0.45 | 0.70 | 0.80 | 0.80 |
Site Coverage | 30% | 50% | 60% | 70% | 40% |
Open Space | |||||
Commercial | N.A. | N.A. | 7% – 11% of site | 7% – 11% of site | 7% – 11% of site |
Residential: Common | 300 sq. ft. per unit | 300 sq. ft. per unit, any combination of shared or private | 300 sq. ft. per unit, any combination of shared or private | 300 sq. ft. per unit, any combination of shared or private | |
Residential: Private | 75 – 225 sq. ft. per unit | ||||
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | ||||
Primary Structure | 30 ft. | ||||
Notes:
1.Front porches may extend up to 10 feet into front setback (or street-side setback for wrap-around porches).
2.Measured at building wall, not ridge.
Table 3-30. Napa/Sonoma Corridor: New Development
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | |||
|---|---|---|---|---|
R-M | MX | C | C-G | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | |||
Front/Street-side1 | One-story: 15 ft. Two-story: 25 ft. | |||
Side: | 5 ft. minimum, 12 ft. combined | None required, except when abutting a residential zone, in which case the corresponding setback in the residential zone shall apply. | ||
Side: | 2 ft. for every 5 ft. (or fraction thereof) of height above 15 ft.,2 in addition to the normal requirement for one-story structures. | |||
Rear | 15 ft., except when abutting the R-L zone, in which case a minimum 20 ft. setback is required. | None required | ||
Garage: Front | Garages shall be set back 20 feet from the main structure (residential development). Parking areas should normally be located along the sides and to the rear of a property and should be minimized or avoided in front of buildings. For the expansion or renovation of existing parking areas subject to planning approval, the review authority may require additional landscaping and/or the consolidation of driveway cuts. | |||
F.A.R./Site Coverage | ||||
F.A.R. | 0.45 | 0.70 | 0.80 | 0.80 |
Site Coverage | 50% | 60% | 70% | 40% |
Open Space | ||||
Commercial | N.A. | 7% – 11% of site | 7% – 11% of site | 7% – 11% of site |
Residential: Common | 25% | 300 sq. ft. per unit, any combination of shared or private | 300 sq. ft. per unit, any combination of shared or private | 300 sq. ft. per unit, any combination of shared or private |
Residential: Private | 400 sq. ft. per unit | |||
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | |||
Primary Structure | 30 ft. | |||
Notes:
1.Front porches may extend up to 10 feet into front setback (or street-side setback for wrap-around porches).
2.Measured at building wall, not ridge.
2. Setbacks, Site Coverage, and Open Space. Proposed development shall be designed and constructed in compliance with the requirements set forth in Tables 3-29 and 3-30, preceding.
3. Driveways and Parking. Parking areas for multifamily projects shall not be located in a front setback, but shall be provided at the rear or along the side of the site. Multifamily parking areas shall be screened from adjacent residential zoning districts and land uses. See Chapter 19.48 SMC, Parking and Loading Standards. Driveways along collector streets (West Spain Street, Fifth Street West, and Verano Avenue) shall be minimized when possible, by combining driveways, using alleys, or designing development so that access is provided from local streets.
4. Natural Features. Significant environmental amenities such as creeks, streams and other drainage courses, mature trees, and other natural features shall be preserved by being incorporated into site plan design and layout. Appropriate enhancement or protective measures shall be included in plans where determined necessary by the planning commission. See creek setback (SMC 19.40.020) and landscaping standards and design guidelines (SMC 19.40.060), and the tree preservation ordinance for specific tree preservation requirements and guidelines.
5. Screening and Buffering. Multifamily and commercial developments shall require screening and buffering of parking and driveway areas, and noise and light sources. See Chapter 19.46 SMC, Fences, Hedges and Walls, and landscape standards and guidelines (SMC 19.40.060).
B. Building Design.
1. Height and Profile. Proposed structures shall not exceed a maximum height of 30 feet. See SMC 19.40.040 for height measurement and exceptions.
2. Building Types – Guidelines for Residential Structures. Proposed dwellings should be placed on their sites so that the most narrow dimension of the structure is parallel to the most narrow dimension of the parcel, and so that the primary entrance to the dwelling faces the public street, or is accessible from a porch or other entry element which faces the street.
3. Building Types – Guidelines for Commercial and Mixed Use Structures. New commercial and mixed use buildings and alterations to existing structures should enhance the character of the West Napa Street/Sonoma Highway corridor and preserve significant historic elements. In reviewing proposals for commercial and mixed development and redevelopment, the review authority shall make use of the following guidelines:
a. Buildings should reinforce the scale, massing, proportions and detailing established by other significant historic buildings in the vicinity (if any).
b. The massing of larger commercial and mixed use buildings (5,000 square feet or greater) should be broken down to an appropriate scale through the use of storefronts and breaks in the facade.
c. Architectural styles and details that reflect the Sonoma vernacular should be used.
d. Site design and architectural features that contribute to pedestrian comfort and interest, such as awnings, recessed entrances, paseos, alleys, and patios, are encouraged.
e. Potential impacts on adjacent residential uses shall be considered and addressed through the site planning of new commercial and mixed use development.
f. In renovations involving historic buildings, authentic details should be preserved and any new detailing and materials should be compatible with those of the existing structure. Pre-existing alterations that diminish a building’s historic qualities should be removed when the opportunity arises. (See Chapter 19.42 SMC, Historic Preservation and Infill in the Historic Zone.)
g. Building types, architectural details and signs having a generic or corporate appearance are strongly discouraged. Chain stores and franchises are not prohibited in the West Napa Street/Sonoma Highway corridor, but such uses must enhance appearance of the area in terms of building design, landscaping, and signs. (Ord. 10-2025 § 2 (Exh. A), 2025; Ord. 02-2021 § 1(10), 2021; Ord. 06-2013 § 3, 2013; Ord. 03-2004 § 3, 2004; Ord. 2003-02 § 3, 2003).
A. Existing Conditions. The three open space districts are characterized by large areas of land in public ownership devoted to open space and recreational uses. The Maxwell district has an area of approximately 89 acres, all of which is owned by Sonoma County and dedicated to use as a regional park. The Maxwell Farms Regional Park encompasses a range of recreational uses, including playing fields, a Boys and Girls Club, and natural hiking areas.
The Vallejo district is dominated by the 57-acre Vallejo Home State Park. The historic buildings within this park are set off by expansive vistas. North of the park are several large, vacant parcels, currently used for grazing but having a zoning of Hillside Residential. Other uses within the district include a complex of city buildings (the police station and the city council chambers) and playing fields, a church, and a small amount of residential development.
The third open space district is comprised of the Mountain Cemetery. This city-owned property, which has an area of approximately 60 acres, has been developed with a historic public cemetery on the lower portion, with the remainder devoted to oak woodlands. The property is a key part of the hillside backdrop north of the city.
B. Desired Future. The general objective for the three districts is to preserve and enhance their value as public open space and recreational resources. A secondary objective for these districts is to maintain significant areas within the city with nonhardscape groundcovers to minimize increased quantities of urban runoff and downstream flooding.
C. Intended Changes. Maxwell Farms Regional Park will continue to be managed by the county department of parks and recreation. The city will maintain its partnership with the county to ensure that future improvements address valley recreational needs while preserving the unique environmental features of the park. Similarly, the city will continue to work with the State Parks Department to ensure that historic resources and open space values associated with the Vallejo Home State Park are preserved. If the privately owned hillside properties behind the park cannot be acquired as open space, the city will need to carefully monitor their development through its hillside regulations in order to minimize visual impacts on the backdrop.
Within the Cemetery district, the Old Mountain Cemetery will continue to be operated as a public cemetery and has recently been expanded to include a veterans’ component. The portion of the property that had been used as a landfill will be restored to a natural condition. Within the property, off of Norrbom Road, the development of a water tank has recently been completed. The tank site has been carefully selected to minimize visual impacts. It is intended that the upper portion of the property, which encompasses approximately 60 acres, will be preserved in its natural condition as an oak woodland, with public access provided through a hiking trail. Portions of this area which have been damaged by illegal four-wheel drive activity will be restored over time. (Ord. 05-2015 § 3, 2015; Ord. 2003-02 § 3, 2003).
A. Site Planning Standards.
1. Residential Density. The following residential densities and minimum lot sizes apply to new subdivisions within the different zoning districts of the open space planning areas:
Table 3-31. Lot Size and Residential Density Requirements
Zoning District | Number of Dwellings Per Parcel1 | Minimum Lot Size |
|---|---|---|
Pk | N.A.2 | N.A. |
P | N.A.2 | N.A. |
R-HS | 1 per 10 acres, maximum3 | 10 acres |
R-L | 2 per acre minimum; 5 per acre maximum | 7,500 sq. ft. |
Notes:
1.Densities do not include density bonus. See Chapter 19.44 SMC.
2.Caretaker’s residence may be allowed by use permit.
2. Setbacks, Site Coverage, and Open Space. Proposed development shall be designed and constructed in compliance with the requirements set forth in Table 3-32, following.
3. Driveways and Parking. Parking areas for public uses shall be appropriately landscaped and screened. See Chapter 19.48 SMC, Parking and Loading Standards. Driveways along collector streets shall be minimized when possible, by combining driveways, using alleys, or designing development so that access is provided from local streets.
4. Natural Features. Significant environmental amenities, including Sonoma Creek and associated riparian areas, wetlands, hillsides, and mature oak trees, shall be preserved by being incorporated into site plan design and layout. Appropriate enhancement or protective measures shall be included in plans where determined necessary by the planning commission. See landscaping standards and design guidelines (SMC 19.40.060), and the tree preservation ordinance for specific tree preservation requirements and guidelines. Environmental features of lesser significance should be incorporated into project site plans when appropriate if justified by the quality of the feature and its relation to the site.
B. Building Design.
1. Height and Profile. Proposed residential structures shall not exceed a maximum height of 30 feet. For structures in excess of 15 feet, side and rear setbacks shall be increased by two feet for each additional five feet in height. See the following design guidelines, and SMC 19.40.040 for height measurement and exceptions.
2. Building Types – Guidelines for Residential Structures. Proposed dwellings should be placed on their sites so that the most narrow dimension of the structure is parallel to the most narrow dimension of the parcel, and so that the primary entrance to the dwelling faces the public street, or is accessible from a porch or other entry element which faces the street.
C. Street and Block Layout. It is intended that streets within the open space districts will be maintained at their existing width and alignment.
Table 3-32. Open Space Districts: Infill and Additions
Development Feature | Requirements by Zoning District Setbacks, Site Coverage, Open Space and Height | |
|---|---|---|
R-HS | R-L | |
Setbacks | Minimum setbacks required for primary structures. See SMC 19.40.110 for setback measurement, allowed projections into setbacks, exceptions, and design guidelines for setbacks. | |
Front/Street-side1 | 30 ft. | 20 ft. |
Side: | 30 ft. | 7 ft. minimum, 18 ft. total |
Side: | 30 ft. | 7 ft. minimum, 18 ft. total |
Rear | 30 ft. | 20 ft. |
Garage: Front | 30 ft. | 20 ft. from primary structure |
F.A.R./Site Coverage | ||
F.A.R. | 0.10 | 0.35 |
Site Coverage | 10% | 40% |
Open Space | Minimum open space required for residential component only. See SMC 19.40.070 and 19.40.080 for design requirements. | |
Residential: Private | No minimum requirement. | |
Height | Ridge height measured from finished grade. See SMC 19.40.040 for applicability and exceptions. | |
Primary Structure | 30 ft. | 30 ft. |
Notes:
1.In the Pk and P zoning districts, development standards are determined on a case-by-case basis through use permit review.
(Ord. 02-2021 § 1(11), 2021; Ord. 2003-02 § 3, 2003).