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Monrovia City Zoning Code

CHAPTER 17

12 RESIDENTIAL DEVELOPMENT STANDARDS

§ 17.12.005 NEIGHBORHOOD COMPATIBILITY DESIGN REVIEW.

   (A)   Purpose and intent. The preservation of the character of Monrovia's neighborhoods is an important goal for the community. The purpose of this chapter is to integrate new development into the context and character of existing neighborhoods to achieve compatibility. The tools implemented to address compatibility are intended to provide an approach that balances the desires of the property owner to develop his or her property with the concerns of surrounding residents to maintain the character of their neighborhood.
      (1)   The purpose and intent of the neighborhood compatibility design review is:
         (a)   To preserve the character and charm of the city and its neighborhoods by establishing processes and criteria to review new construction to assure that the resulting structures are compatible with the neighborhood within which they are located.
         (b)   To provide reasonable review of proposals to maximize compatibility with the unique character of the neighborhood in terms of mass, scale, height, and design, while generally maintaining neutrality regarding the architectural style of the proposed development.
         (c)   To minimize privacy impacts of new two-story construction upon neighboring properties while still maintaining good design.
         (d)   To provide a review process to regulate the development or redevelopment of properties within existing neighborhoods so as to maximize visually compatible relationships, and bright, open neighborhoods.
         (e)   To educate applicants regarding their obligation to take into consideration the potential impacts on their neighbors when modifying structures or proposing new structures and take reasonable steps to mitigate such impacts.
      (2)   It is not the intent of this chapter to unreasonably restrict or regulate the right of an individual property owner to determine the type of structure or addition desired.
      (3)   The neighborhood compatibility design review process is intended to be an integral part of the overall design process that should commence with city staff and the applicant prior to the preparation of any design concepts.
      (4)   The regulations in this section are in addition to the requirements of other regulations or ordinances of the city and where in conflict the more restrictive regulations shall apply.
   (B)   Definitions. For the purposes of this section, the following definitions shall apply.
      ADDITION. The creation of any new portion of a building which results in a vertical or horizontal extension of the building that is visible from the outside of the building.
      ALTERATION. The exterior modification, including but not limited to an addition, removal and/or modification of windows, doors, roof structure, siding or visible part of a foundation of any main or accessory structure that requires a building permit.
      ARCHITECTURAL STYLE. The characteristic form and detail of building from a particular historical period or school of architecture (e.g. Spanish, Tudor)
      REPLACEMENT-IN-KIND. Replacement of any architectural element which is identical to the original element in terms of its location, size, and shape; and is made of materials that outwardly have the same dimensions, proportions, details and textures of the original architectural element and that outwardly appear unchanged from the original architectural style. If the original design of a structure and/or element was removed or altered, or if the original design elements are not known, the replacement element(s) shall be consistent with the structure's original architectural style.
   (C)   Applicability. On any property in a residential zone or a PD Zone designated for residential development, no person shall construct any of the following structures until such structures are found to be compatible pursuant to this section with the neighborhood within which it is located. Applicable construction shall be classified into one of the following categories. Specific review and noticing requirements are established for each category.
      (1)   Existing residential dwelling proposing a single story addition that affects no more than the rear 50% of the structure.
      (2)   Existing residential dwelling proposing a single story addition or exterior alterations that affect the front 50% or more of the structure.
      (3)   New single story, single family residential dwelling.
      (4)   Two story addition to a two story dwelling.
      (5)   Two story addition to a single story dwelling.
      (6)   New two story single family residential dwelling.
      (7)   Multi-family development not subject to a conditional use permit.
   (D)   Compatibility design review criteria. The reviewing body shall review all proposals that fall within division (C) of this section using the following categories/criteria:
      (1)   Exterior material review.
         (a)   Building materials and finishes on exterior surfaces;
         (b)   Architectural integrity of the proposed project.
      (2)   Site planning/site design.
         (a)   Orientation of the building(s) on the site and in relation to surrounding property improvements, including entrances, parking areas, and driveways;
         (b)   Garage and parking locations, driveway and driveway approach locations;
         (c)   Onsite building relationships;
         (d)   Landscaping.
      (3)   Building form.
         (a)   Roof designs and materials;
         (b)   The height and building profile of the structures;
         (c)   Mass, bulk, modulation, scale and articulation.
      (4)   Architectural features/design. All exterior facade and architectural features including window types, entrance areas, porches, chimneys, and the use of building modulation.
      (5)   Neighbor impact review.
         (a)   The scale and bulk of the building(s) in relationship to the neighboring properties, including the location and orientation of second stories;
         (b)   Reasonably minimizes privacy impacts;
         (c)   Solar access;
         (d)   Grade differential.
      (6)   Neighborhood compatibility review.
         (a)   Relationship of development to the surrounding neighborhood such as appropriate mass, architectural features, scale, and building materials;
         (b)   Prevailing/predominant development patterns.
   (E)   Review and notification. In establishing the applicable neighborhood compatibility design review process and noticing, all applications shall be classified under one of the categories of construction identified in division (C).
      (1)   Regardless of the type of development proposed, applicants are encouraged, but are not required, to meet with the immediate neighbors prior to submittal of an application. Review authority and notification shall be completed according to the following table:
 
Categories
(meeting all zoning requirements)
Review by
Notification
1. Single story addition (rear)
Staff
None
2. Single story addition (front)
Staff
Sign
3. New SFR single story
DRC
Sign and 200' radius mailing
4. Two story addition to a two story house
DRC
Sign and 400' radius mailing
5. Two story addition to a single story house
DRC
Sign and 400' radius mailing
6. New SFR two story
DRC
Sign and 400' radius mailing
 
      (2)   In addition to any other action otherwise required by law pertaining to the processing of the application, if the construction category requires neighborhood notification, the following neighborhood notification shall be required:
         (a)   Posting of a development sign. The applicant is required to post the property in the manner set forth by the director. The property must be posted a minimum of 15 days prior to the review by the committee. The application shall not be considered complete unless the site has been posted pursuant to this section.
         (b)   Notice of the public meeting shall be mailed at least 15 days prior to the meeting to all owners of real property with the radius specified in the table in this division (E) utilizing the records of the County Assessor.
   (F)   Findings. No application subject to neighborhood compatibility design review approval shall be approved unless the approving body finds:
      (1)   That the proposed development meets the zoning development standards applicable to the property.
      (2)   That the orientation and design of the building(s) are appropriate to the size and configuration of the lot and provide a well-designed site layout.
      (3)   That the proposed development is designed to be compatible with adjacent properties by reasonably minimizing impacts related to privacy and solar access.
      (4)   That the proposed development is compatible with the character of the neighborhood in terms of scale, mass, height and design.
   (G)   Exemptions. Notwithstanding the provisions of any other section of this chapter, neighborhood design compatibility review shall not be required for:
      (1)   Ordinary maintenance and repair as defined in § 17.20.040 of this code.
      (2)   Replacement in kind.
      (3)   Restoration of an architectural element that is consistent with the architectural style of the structure at the time of construction or in cases where the entire architectural style of a building is being completely renovated into a new style, the element shall be consistent with the new or predominant architectural style.
      (4)   Reroofing with a material similar to the existing material.
      (5)   Painting.
      (6)   Construction of fences and walls.
      (7)   Single story second units constructed pursuant to Title 17.
      (8)   Single story accessory structures, including attached patios, in side and/or rear yards.
      (9)   Flatwork.
      (10)   Interior construction that does not involve any exterior changes.
      (11)   Development subject to a Hillside Development Permit.
      (12)   Work that does not require a building permit.
      (13)   Reasonable accommodation requests pursuant to § 17.52.327.
(Ord. 2016-08 § 20, 2016; Ord. 2024-01 §§ 9, 10, 2024)

§ 17.12.010 RESIDENTIAL FOOTHILL (RF) DEVELOPMENT STANDARDS.

   (A)   Lot size. The minimum lot area shall be 15,000 square feet with a mean average area in excess of one acre. Lots exceeding two acres in area shall be counted as two acres in averaging for a development. A minimum lot width and depth of 100 feet is required.
   (B)   Minimum floor area and lot coverage.
      (1)   The minimum floor area of a main building shall be 1,250 square feet.
      (2)   The maximum floor area of the main building shall be based on the net lot area and shall be determined using the following formula: 35% of the net lot area for the first 20,000 square feet of net lot area, plus an additional 10% of the remaining net lot area. Attached garages and other attached, enclosed accessory buildings shall be calculated as main building floor area.
   (C)   Accessory buildings.
      (1)   In the RF zone, the floor area ratio for all accessory buildings shall not exceed the percentages shown in the following table.
 
MAXIMUM ACCESSORY BUILDING F.A.R.
LOT SIZE
FLOOR AREA RATIO
Under one acre
10%
(2,000 square foot maximum)
One acre and above
8%
 
      (2)   In no case shall detached accessory structures exceed 80% of the main building floor area.
      (3)   Attached garages and other attached, enclosed accessory buildings shall be counted toward the total accessory building floor area as well as part of the main building floor area notwithstanding the minimized visibility garage provisions in § 17.12.040(C).
   (D)   Setbacks.
      (1)   Front yard setback requirements in the RF zone shall be as follows:
 
LOT LINE
BOUNDED BY
BUILDING TYPE
REQUIRED SETBACK
Front
A street
Main or accessory
25'
 
         (a)   Average setback. Where residences or buildings on the same side of the street as the subject property are developed with front yard setbacks greater than required in the zone, the average setback shall be required. The average setback shall be determined using structures on the same side of the street in the same block, not to exceed 400 feet on either side of the subject property. The largest and smallest setback will be excluded in determining the average.
         (b)   Encroachments. Porches, platforms, and landing places not extending above the level of the first floor may encroach up to seven feet into the required setback. Architectural elements, such as oriel, cornices, eaves, or sills may encroach up to two feet.
         (c)   Flag lots. The front yard setback on a flag lot shall be measured from the closest property line, parallel to and not adjacent to the street. However, if a flag lot has a street frontage of 50 feet or greater, the front setback may be taken from the front property line if the house is built in the narrow portion of the lot. When a house on a flag lot is oriented in a direction other than towards the street, the Development Review Committee shall determine the location from where the front yard setback is measured.
      (2)   Side yard setback requirements in the RF zone shall be as follows:
 
LOT LINE
BOUNDED BY
BUILDING TYPE
REQUIRED SETBACK
Side
Other lots or an alley
Main - first story
10% of lot width, 5' minimum, 15' maximum
Side
Other lots, a street or alley
Main - second story
15'
Side
Other lots or an alley
Accessory (except garages opening to alley)
3'
Side
An alley
Garages opening to alley
25' from opposite side of alley
Side
A street
Main or accessory
10% of lot width, 10' minimum
 
         (a)   Encroachments. Chimneys having a maximum parallel linear dimension of eight feet may project two feet into the required setback. Chimneys extending past the second floor may project into the side yard the same amount as on the first floor. Eaves may project two feet into the required setback.
         (b)   Second story setback. The required second story setback shall be 15 feet. For structures over 27 feet in height, the second story must be setback an additional two feet for every additional one foot in height.
         (c)   Decks and balconies. Decks one foot or more above the existing grade and balconies shall maintain the same setback as main buildings.
         (d)   Accessory structures located less than 80 feet from the front property line must be set back the same distance from property line as a main structure.
         (e)   On corner lots with garages opening on to the street, the garage must be set back a minimum of 20 feet from the side property line adjacent to the street.
         (f)   Accessory structures with a plate height exceeding nine feet and/or a ridge height exceeding 14 feet and two-story accessory structures shall maintain the same setback as main buildings.
      (3)   Rear yard setback requirements in the RF zone shall be as follows:
 
LOT LINE
BOUNDED BY
BUILDING TYPE
REQUIRED SETBACK
Rear
Another lot or an alley
Main - first story
25% of lot depth, minimum 20'
Rear
Another lot or an alley
Main - second story
25% of lot depth, plus 10'
Rear
Another lot or an alley
Accessory (except garages opening to alley)
3'
Rear
An alley
Garages opening to an alley
25' from opposite side of alley
 
         (a)   Encroachments. Attached unenclosed, single story patios with no freestanding walls may encroach an additional ten feet into the required main building setback.
         (b)   Decks and balconies. Decks one foot or more above existing grade and balconies shall maintain the same setback as the main buildings.
         (c)   Accessory structures with a plate height exceeding nine feet and /or a ridge height exceeding 14 feet, two-story accessory structures shall maintain the same setback as the main buildings.
      (4)   Pad edge setbacks. On hillside lots with pads adjacent to slopes of three feet or more, using the formula: slope height/3 (SH/3), the following regulations also apply:
         (a)   Top of slope. The vertical height of the slope as taken from the toe to top of slope (irrespective of the property line) shall be divided by three using the formula SH/3. The quotient of SH/3 shall be rounded to the nearest whole number and is the required setback for structures from the sides and rear pad edge. The maximum setback required shall be 15 feet for the single story portion of the structure. The second story must be set back 15 feet from the pad edge. For structures over 27 feet in height, the second story must be set back an additional two feet for every additional one foot in height.
         (b)   Toe of slope. In addition to the setback requirements from property line, setback distances from the toe of slope for the side of a pad shall be five feet from the toe of the slope to any structures on the pad. No setback is required for the rear of the pad.
   (E)   Height restrictions.
      (1)   No building shall exceed two stories in height. The maximum building height is based on lot width as follows:
 
LOT WIDTH
MAXIMUM BUILDING HEIGHT
Less than 75'
27'
75' and greater
30'
 
      (2)   Building height shall be determined by the vertical distance measured at any point of the proposed roof structure to the exterior or finished grade at the proposed exterior walls of the structure. No part of a building (except chimneys) shall extend above an imaginary line drawn at the maximum building height above finished grade as illustrated in the following diagram:
 
      (3)   Retaining walls. When used to extend the pad area of a lot adjacent to slope(s) a retaining wall shall not exceed a height of three feet unless the retaining wall is fully screened by a residence, garage, or other permitted structure so that the wall cannot be viewed from an adjacent parcel or from any street.
   (F)   Separation between buildings.
      (1)   Facing walls of separate buildings on the same lot in the RF zone shall meet separation requirements for each story according to the following table:
 
REQUIRED SEPARATION
First story
6'
Second story
20'
 
      (2)   These building separation requirements apply equally to separate buildings that share a common roof.
   (G)   Hillside Development Standards (properties not covered by a specific plan). The following shall be required:
      (1)   Conservation of natural topographic features and appearances by means of land sculpturing to blend graded slopes and benches with natural topography.
      (2)   Protection of existing vegetation through careful site planning which may reduce areas of grading.
      (3)   Provision of safe access for vehicular and pedestrian traffic with minimum of disturbances of the natural terrain. Utilization of street designs and improvements which serve to minimize grading impact and harmonize with the natural contours and character of the hillsides. Street standards shall be per the city's adopted Hillside Development Policies and Standards.
      (4)   Every reasonable effort shall be made to preserve or minimize the impact on view corridors and scenic vistas. A visual impact analysis shall be required per the city's adopted Hillside Development Policies and Standards.
      (5)   Every reasonable effort shall be made to preserve mature trees, especially oaks. Special consideration shall be given to the preservation or relocation of heritage trees.
      (6)   Cantilevered construction, overhang, exposed structures or stem wall construction shall not be permitted. Cantilevered decking shall be permitted only if the line of sight analysis indicates no visual impact or appropriate mitigation measures can be adopted.
      (7)   Colors of the buildings shall be selected to blend with the natural colors and hues of the surrounding hillsides.
      (8)   A landscape plan shall be required indicating type and extent of proposed vegetation. In addition, landscape materials for the coverage and stabilization of graded slopes shall be approved by the Development Review Committee.
      (9)   A visual impact analysis shall be required for those dwelling units which are proposed to be developed in "sensitive" areas. "Sensitive" areas are those which are higher in elevation and visually exposed to the city-at-large and could potentially impact existing city-at-large view sheds. Proposed dwelling units designated as "sensitive" shall be set back from the top of the slope a distance determined by the line-of-sight analysis in addition to the required setbacks. The line of sight analysis is not designed to completely screen or eliminate the view of the dwelling units in sensitive areas. However, it is designed to minimize the visual impact of building lines by the use of increased setback, berming, landscaping and building design.
   (H)   Hillside Development permit required. In addition to the requirements of this chapter, where development proposals require grading of the lot with five feet or more of cut, five feet or more of fill, or a retaining wall of six feet in height or higher, approval of a Hillside Development permit is required for the following:
      (1)   Development of new single-family dwellings.
      (2)   Earth movement that creates a footprint of more than 500 square feet.
      (3)   Swimming pools and basements are excluded.
(`83 Code, § 17.12.010) (Ord. 94-03 § 6, 1994; Ord. 96-06 § 3, 1996; Ord. 97-08 § 3, 1997; Ord. 2001-10 § 1, 2001; Ord. 2001-17 § 4, 2002; Ord. 2004-11 § 4, 2004; Ord. 2016-08 § 21, 2016)

§ 17.12.020 RESIDENTIAL ESTATE (RE) AND RESIDENTIAL LOW-DENSITY (RL) STANDARDS.

   (A)   Lot size.
      (1)   The minimum lot area and dimensions shall be as follows:
 
MINIMUM LOT AREA
MINIMUM LOT WIDTH
MINIMUM LOT DEPTH
RE
20,000 square feet
75 feet
100 feet
RL
7,500 square feet
75 feet
100 feet
 
      (2)   Lot averaging. In the RL and Planned Development Areas with RL zone designations, a request for the reduction of a minimum lot area or lot width may be considered through a variance process, if the following criteria are met:
         (a)   The proposed lots shall meet the average of the block in width and area, and in no case shall the depth be less than 100 feet. To determine the average lot size (width and area), the average shall be taken on the same side of the block, no less than 400 feet on either side of the subject lot. Two-thirds of the lots, including the subject lot, must be equal to or less than the width and area of the proposed lots. In cases where the average should be taken by a radius or other means, based on the subject lot's location, and proximity to corners, the Development Review Committee shall decide on the averaging method.
         (b)   The proposed lots shall have frontage on an existing dedicated street.
         (c)   Averaging shall not be considered if the lot split will result in the demolition of a house built prior to 1940 that has architectural value.
   (B)   Minimum/maximum floor area. The minimum floor area of a dwelling unit in the RE and RL zones shall be 1,250 square feet.
   (C)   The maximum floor area of the main building in the RE and RL zones shall be based on the net lot area and shall be determined using the following formula: 40% of the net lot area for the first 5,000 square feet of net lot area, plus an additional 35% of the net lot area for the next 5,000 square feet of net lot area, plus an additional 15% of the remaining net lot area.
      (1)   Attached garages and other attached, enclosed accessory buildings shall be calculated as main building floor area. If the garage is attached to the rear of the structure and is not visible from the street, then up to 400 square feet of the garage floor area may be added to the maximum floor area allowed for the primary structure.
   (D)   Accessory buildings.
      (1)   In the RL and RE zones, the floor area ratio for all accessory buildings shall not exceed the percentages shown in the following table.
 
MAXIMUM ACCESSORY BUILDING F.A.R.
LOT SIZE
FLOOR AREA RATIO
Under one acre
10%
(2,000 square foot maximum)
One acre and above
8%
 
      (2)   In no case shall detached accessory structures exceed 80% of the main building floor area.
      (3)   Attached garages shall be counted toward the total accessory building floor area as well as part of the main building area notwithstanding the minimized visible garage provisions in § 17.12.040(C).
   (E)   Setbacks.
      (1)   Front yard setback requirements in the RL and RE zones shall be as follows:
 
LOT LINE
BOUNDED BY
BUILDING TYPE
REQUIRED SETBACK
Front
A street
Main or accessory
25'
 
         (a)   Average setback. Where residences or buildings on the same side of the street as the subject property are developed with front yard setbacks greater than required in the zone, the average setback shall be required. The average setback shall be determined using structures on the same side of the street in the same block, not to exceed 400 feet on either side of the subject property. The largest and smallest setback will be excluded in determining the average.
         (b)   Encroachments. Porches, platforms, and landing places not extending above the level of the first floor may encroach up to seven feet into the required setback. Architectural elements, such as oriel, cornices, eaves, or sills may encroach up to two feet.
         (c)   Flag lots. The front yard setback on a flag lot shall be measured from the closest property line, parallel to and not adjacent to the street. However, if a flag lot has a street frontage of 50 feet or greater, the front setback may be taken from the front property line if the house is built in the narrow portion of the lot. When a house on a flag lot is oriented in a direction other than towards the street, the Development Review Committee shall determine from where the front yard setback is measured.
      (2)   Side yard setback requirements in the RL and RE zones shall be as follows:
 
LOT LINE
BOUNDED BY
BUILDING TYPE
REQUIRED SETBACK
Side
Other lots or an alley
Main - first story
Total on both side yard setbacks is 24% of lot width, 5' minimum
Side
Other lots, a street or alley
Main - second story
12' second story setback
Side
Other lots or an alley
Accessory (except garages opening to alley)
3'
Side
An alley
Garages opening to alley
25' from opposite side of alley
Side
A street
Main or accessory
10'
 
         (a)   Encroachments. Chimneys having a maximum parallel linear dimension of eight feet may project two feet into the required setback. Chimneys extending past the second floor may project into the side yard the same amount as on the first floor. Eaves may project two feet into the required setback.
         (b)   Second story setback. The required second story setback shall be 12 feet or the required first floor setback, whichever is greater. For structures over 27 feet in height, the second story must be set back an additional two feet for every additional one foot in height.
         (c)   Decks and balconies. Decks one foot or more above the existing grade and balconies shall maintain the same setback as main buildings.
         (d)   Accessory structures located less than 80 feet from the front line must be set back the same distance from property line as a main structure.
         (e)   On corner lots with garages opening onto the street, the garage must be set back a minimum of 20 feet from the side property line adjacent to the street.
         (f)   Accessory structures with a plate height exceeding nine feet and/or a ridge height exceeding 14 feet and two-story accessory structures shall maintain the same setback as the main building.
      (3)   Rear yard setback requirements in the RL and RE zones shall be as follows:
 
LOT LINE
BOUNDED BY
BUILDING TYPE
REQUIRED SETBACK (in feet)
Rear
Another lot or alley
RE
Main - first story
25% of lot depth, Minimum 20'
Main - second story
25% of lot depth, plus 10'
RL
Main - first story
20% of lot depth, Minimum 20'
Main - second story
20% of lot depth, Plus 10'
Rear
Another lot or alley
Accessory (except garages opening to alley)
3
Rear
An alley
Garages opening to alley
25 from opposite side of alley
 
         (a)   Encroachments. Attached unenclosed, single story patios with no freestanding walls may encroach an additional ten feet into the required main building setback.
         (b)   Decks and balconies. Decks that are one foot or more above the existing grade and balconies shall maintain the same setback as main buildings.
         (c)   Accessory structures with a plate height exceeding nine feet and/or a ridge height exceeding 14 feet and two-story accessory structures shall maintain the same setback as main buildings.
   (F)   Building bulk and height restrictions.
      (1)   No buildings shall exceed two stories in height. The maximum building height is based on the lot width as follows:
 
LOT WIDTH
MAXIMUM BUILDING HEIGHT
Less than 75'
27'
75' and greater
30'
 
      (2)   Building height shall be determined by the vertical distance measured at any point of the proposed roof structure to the exterior finished grade at the proposed exterior walls of the structure. No part of a building (except chimneys) shall extend above an imaginary line drawn at the maximum building height above finished grade as illustrated in the following diagram:
 
   (G)   Separation between buildings.
      (1)   Facing walls of separate buildings on the same lot in the RL and RE zones shall meet separation requirements for each story according to the following table:
 
REQUIRED SEPARATION
First story
6'
Second story
20'
 
      (2)   These building separation requirements apply equally to separate buildings that share a common roof.
   (H)   Hillside Development permit required. In addition to the requirements of this chapter, where development proposals require grading of the lot with five feet or more of cut, five feet or more of fill, or a retaining wall of six feet in height or higher, approval of a Hillside Development permit is required for the following:
      (1)   Development of new single-family dwellings.
      (2)   Earth movement that creates a footprint of more than 500 square feet.
      (3)   Swimming pools and basements are excluded.
(`83 Code, § 17.12.020) (Ord. 96-06 § 1, 1996; Ord. 97-08 § 4, 1997; Ord. 99-03 § 1, 1999; Ord. 2001-10 § 2, 2001; Ord. 2001-17 § 5, 2002; Ord. 2004-11 § 5, 2004; Ord. 2016-08 § 22, 2016)

§ 17.12.030 MULTIPLE-FAMILY RESIDENTIAL DEVELOPMENT STANDARDS.

   (A)   Lot sizes and densities.
      (1)   The minimum lot areas, dimensions, and densities for the various multiple-family residential zones are shown in the following table:
 
ZONE
MINIMUM LOT WIDTH (feet)
MINIMUM LOT DEPTH (feet)
MINIMUM LOT AREA
(square feet)
DENSITY
RM****
RM****/PUD
75
100
10,000
1 unit per designated (****) square foot of lot area
RM/RH
100
100
15,000
Lots<15,000 square feet
RM25001
Lots>15,000 square feet
75% FAR2
RH
100
100
15,000
Lots<15,000 square feet3
Lots>15,000 square feet
75% FAR2
1   One unit for each 2,500 square feet of lot area.
2   75% Floor Area Ratio (gross dwelling/lot area).
3   Two units for the first 5,000 square feet of lot area, with an additional unit for every 1,500 square feet over 5,000.
 
      (2)   Lot averaging. In the RM and Planned Development Areas with RM zone designations, a request for the reduction of a minimum lot area or lot width may be considered through a variance process, if the following criteria is met:
         (a)   The proposed lots shall meet the average of the block in width and area, and in no case shall the depth be less than 100 feet. To determine the average lot size (width and area), the average shall be taken on the same side of the block, no less than 400 feet on either side of the subject lot. Two-thirds of the lots, including the subject lot, must be equal to or less than the width and area of the proposed lots. In cases where the average should be taken by a radius or other means based on the subject lot's location, and proximity to corners, the Development Review Committee shall decide on the averaging method.
         (b)   The proposed lots shall have frontage on an existing dedicated street.
         (c)   Averaging shall not be considered if the lot split will result in the demolition of a house built prior to 1940 that has architectural value.
   (B)   Height requirements. In RM zones, no building shall exceed two stories in height. The maximum building height is 27'. One-story dwellings may be attached; all two-story dwellings shall be detached. A one-story dwelling may be attached to one two-story dwelling.
   (C)   Dwelling size.
      (1)   Detached unit. Detached dwelling units shall have a minimum floor area of 500 square feet on a lot developed with more than one dwelling unit. A single detached dwelling unit on a lot with no other dwelling units shall have a minimum floor area of 1,250 square feet.
      (2)   Attached units. Attached dwelling units shall have the minimum floor area as indicated in the table below (in square feet).
 
EFFICIENCY APARTMEN T
STUDIO
1-BEDROO M
2-BEDROO M
3-BEDROOM
OVER 3-BEDROOM
220
500
600
800
1,000
Add 50 square ft. for every bedroom over 3
 
   (D)   Lot coverage and floor area ratio regulations.
      (1)   Dwelling floor area ratio (F.A.R.). The ratio of total gross dwelling unit floor area to lot area for developments shall not exceed the percentage shown in the following table:
 
ZONE
FLOOR AREA RATIO
(in percent)
All RM and RM/PUD
40
RM/RH
40/75
RH
75
 
      (2)   Accessory floor area ratio. The total accessory building floor area shall not exceed the percentages shown in the following table:
 
ZONE
FLOOR AREA RATIO
(in percent)
All RM and RM/PUD
20
RM/RH
20/40
RH
40
 
   (E)   Setbacks.  
      (1)   Front yard setback requirements in the RM, RM/PUD, RM/RH and RH zones shall be as follows:
 
LOT LINE
BOUNDED BY
BUILDING TYPE
REQUIRED SETBACK
(in feet)
Front
A street
Main or accessory
25
 
         (a)   Average setback. Where residences or buildings on the same side of the street as the subject property are developed with front yard setbacks greater than required in the zone, the average setback shall be required. The average setback shall be determined using structures on the same side of the street in the same block, not to exceed 400 feet on either side of the subject property. The largest and smallest setback will be excluded in determining the average.
         (b)   Encroachments. Porches, platforms, and landing places not extending above the level of the first floor may encroach up to seven feet into the required setback. Architectural elements such as oriel, cornices, eaves, or sills may project up to two feet into the required setback.
         (c)   Flag lots. The front yard setback on a flag lot shall be measured from the closest property line, parallel to and not adjacent to the street. However, if a flag lot has a street frontage of 50 feet or greater, the front setback may be taken from the front property line if the house is built in the narrow portion of the lot. When a house on a flag lot is oriented in a direction other than towards the street, the Development Review Committee shall determine from where the front yard setback is measured.
      (2)   Side yard setback requirements in the RM, RM/PUD, RM/RH, and RH zones shall be as follows:
 
LOT LINE
BOUNDED BY
BUILDING TYPE
REQUIRED SETBACK
(in feet)
Side
Other lots or an alley
Main - first story
10% of lot width
5 minimum
15 maximum
Side
Other lots or an alley
Main-second story
RM zones - 8
RH zone - 6
Side
A street
Main or accessory
10% of lot width
10 minimum
15 maximum
Side
Other lots or an alley
Accessory (except garages opening to alley)
0
Side
An alley
Garages opening to alley
25 from opposite side of alley
 
         (a)   Encroachments. Chimneys having a maximum linear dimension of eight feet may project two feet into the required setback. Chimneys extending past the second floor may project into the side yard the same amount as on the first floor. Eaves may project two feet into the required setback.
         (b)   Second story setback. The required second story setback shall be eight feet in RM zones and six feet in the RH zone or the required first story setback, whichever is greater. Where there are two or more adjacent zones the second story setback requirements for the most restrictive zone shall apply. For every story over two, each story shall be setback an additional five feet in the RH zone.
         (c)   Decks and balconies. Decks that are one foot or more above the existing grade and balconies shall maintain the same setback as main buildings.
         (d)   Accessory structures located less than 80 feet from the front property line must be set back the same distance from the property line as a main structure.
         (e)   On corner lots with garages opening onto the street, the garage must be set back a minimum of 20 feet from the side property line adjacent to the street.
         (f)   Accessory structures with a plate height exceeding nine feet and/or a ridge height exceeding 14 feet and two-story accessory structures shall maintain the same setback as main buildings.
      (3)    Rear yard setback requirements in the RM, RM/PUD, RM/RH, and RH zones shall be as follows:
 
LOT LINE
BOUNDED BY
BUILDING TYPE
REQUIRED SETBACK
(in feet)
Rear
Another lot or an alley
Main
20
Rear
Another lot or an alley
Accessory (except garages opening to alley)
0
Rear
An alley
Garages opening to an alley
25 from opposite side of alley
 
         (a)   Encroachments. Attached unenclosed patios with no freestanding walls shall be set back a minimum of ten feet from the property line.
         (b)   Decks and balconies. Decks one foot or more above existing grade and balconies shall maintain the same setback as main buildings.
         (c)   Accessory structures with a plate height exceeding nine feet and/or a ridge height exceeding 14 feet, and two-story accessory structures shall maintain the same setback as main buildings.
         (d)   Where there are two or more adjacent zones the following rear yard setback requirements shall apply:
            1.   RM Zones. The most restrictive rear yard setback shall apply.
            2.   RH Zones. Where the RH Zone abuts the RL Zone, the rear dwelling unit shall be limited to two stories.
   (F)   Separation between buildings. Facing walls of separate buildings on the same lot in the RM and RH zones shall meet separation requirements for each story based on the type of development according to the following table:
 
REQUIRED SEPARATION (in feet)
Single-family
Multi-family
RM zones
Multi-family RH zone
First story
6
10
8
Second story
12
15
12
 
      (1)   These building separation requirements apply equally to separate buildings that share a common roof.
      (2)   In addition to the above requirements, buildings with a ridge height exceeding 27 feet must provide an additional one-half foot of separation between facing walls beyond the first story for each foot over 27 feet.
   (G)   Recreation space.
      (1)   All developments in the RM zone shall provide a minimum of recreational space equal to 40% of the gross dwelling unit floor area.
      (2)   All developments in the RH zone shall provide a minimum of recreation area equal to 20% of the gross dwelling unit floor area.
      (3)   At least half of the required recreation space shall be private. Private area shall be enclosed by a minimum five-foot high fence or wall and have a minimum dimension of eight feet and must be directly accessible from the unit.
      (4)   Private and common recreation space may be located in a required rear or side setback, but not in a front setback. Common recreation space shall have a minimum 20-foot dimension.
   (H)   New multi-family development shall comply with all applicable zoning code requirements required by the zoning district, specific plan, or planned development area where the property is located and the following design standards:
      (1)   Exterior building materials and finishes.
         (a)   All sides of a building shall include consistent architectural elements. Architectural elements include railings, trellises, trim, cornices, and other similar architectural elements.
         (b)   New buildings shall include at least two or three exterior material finishes.
      (2)   Site planning/design.
         (a)   When buildings are adjacent to a public street, building entrances shall be oriented to face the public street.
         (b)   Ground floor residential entries shall be sheltered from the weather. Sheltering may be accomplished by recessing the entry a minimum of four feet, or the construction of a roof or other similar overhead architectural element.
      (3)   Building form. If a new unit is added to an already improved property, the architectural features of the new unit shall match the architectural features of the existing residence(s) on the lot. The features shall include: exterior siding materials, roof pitch and roof eaves, window sizes and shapes, and other distinct architectural elements, such as porches, cornices, and bay windows.
      (4)   Architectural elements/design.
         (a)   Stoops or front porches, raised a minimum of one foot above the finished grade, shall be provided at ground floor unit entrances that face a street, paseo, common open space area, or other public space.
         (b)   Entrance doors shall have a minimum of one decorative element such as raised panels, sidelights, or transom windows.
         (c)   Blank walls are not permitted; windows and/or doors shall be required on all building facades. Elevator shafts/utility rooms are exempt from this requirement.
      (5)   Neighborhood impact review. When new multi-family residential development is adjacent to an existing single-family residential use, privacy sensitive areas on adjacent parcels, such as windows and private yards, shall be identified on the site plan and a window placement diagram shall be provided. Large evergreen trees and/or garden features (e.g., trellis or supplementary fencing), shall be included to provide a buffer or screening between properties and obscure direct sight-lines into private yard areas or windows on adjacent single-family residential properties and must be installed before a certificate of occupancy or final sign-offs is issued or approved by the city.
      (6)   Grading standards. Grading to increase the height of the existing grade shall not be used to increase the height of a structure.
   (I)   Within five days following the filing of a complete application for building permit plan check for a multi-family residential project, the applicant shall post a notification sign prominently on the subject property, in form and content specified by the Director, providing notice of the pending construction and a contact number for the developer. The sign shall be for public information only and shall remain in place for at least 15 calendar days.
(`83 Code, § 17.12.030) (Ord. 94-03 § 6, 1994; Ord. 96-06 § 2, 1996; Ord. 99-03 § 2, 1999; Ord. 2001-10 §§ 3, 8, 2001; Ord. 2004-11 § 6, 2004; Ord. 2016-08 §§ 23 - 28, 2016; Ord. 2022-06 § 8, 2022; Ord. 2024- 01 §§ 11 - 13, 2024)

§ 17.12.040 MISCELLANEOUS RESIDENTIAL STANDARDS/ALL RESIDENTIAL ZONES.

   (A)   Basements. Basements may be allowed subject to the review and approval by the department. Floor area of basements in dwellings and accessory structures shall not be counted toward the maximum floor area allowed.
   (B)   Fences, hedges and walls. Requirements for fences, hedges and walls in all residential zones shall be as follows:
      (1)   Screening. Screening not to exceed six feet in height shall be permitted on all property lines with the following exceptions:
         (a)   Front yard. No fence over four feet in height, nor any hedge or wall over three feet in height will be permitted in a required front setback.
         (b)   Corner lot. No fence over four feet in height, nor any hedge or wall over three feet in height will be permitted within five feet of the street side property line of a corner lot and must be set back five feet from the front of the house.
         (c)   Corner cut off areas. No fence, hedge or wall over three feet in height will be permitted in the areas defined in division (E) of this section.
         (d)   Fences over six feet in height shall be treated the same as the main dwelling with respect to setback from property line.
         (e)   Fences six feet and over in height and adjacent to a public street shall be screened with landscaping. A landscape plan consisting of trees, shrubs and ground cover shall be submitted and approved by the city.
         (f)   Wrought iron fences without points, spikes or sharp edges on the end of any vertical bar shall be permitted a maximum height of eight feet, and spacing between vertical bars shall not exceed six inches along the rear and side property lines enclosing the back yard area behind a house on hillside lots that back up to unimproved wilderness areas. POINTS, SPIKES AND SHARP EDGES shall mean any end of a vertical bar that is capable of causing, or is likely to cause injury to persons, pets, or undomesticated animals.
         (g)   Multiple-family residential projects shall be enclosed by five- to six- foot decorative walls.
      (2)   Measurement of height. The height of any screening shall be measured as follows:
         (a)   For street property lines, at sidewalk grade;
         (b)   For interior property lines, at highest elevation of adjacent property’s finished grade.
      (3)   Materials. All screening under this section shall be composed of the following:
         (a)   Masonry walls;
         (b)   Wooden fencing, if of adequate aesthetic and structural quality and durability;
         (c)   Wrought-iron fencing: Spacing between vertical bars on all wrought iron fencing shall not exceed six inches. If located north of Foothill Boulevard or east of Mountain Avenue above Lemon Avenue, the end of any vertical bar of a wrought iron fence shall not be pointed, spiked or have sharp edges that are capable of causing, or are likely to cause, injury to persons, pets or undomesticated animals. Spacing of vertical bars on all wrought iron fencing shall not exceed six inches;
         (d)   Chain link fencing is allowed for properties improved with single-family residences only along the side (if not in the front yard setback or adjacent to a street) and rear property lines.
         (e)   All other materials as approved by the Committee, after giving consideration to appearance, structural quality and durability.
         (f)   Nothing in this division (B) shall be deemed to set aside or reduce the requirements established for security fencing by local, state or federal law.
   (C)   Minimized visible garage. On blocks where the predominant pattern of the placement of garages is detached at the rear of the property or otherwise minimally visible from the street, the provisions for a minimized visible garage shall apply when a new garage is proposed.
      (1)   Applicability. The predominant pattern shall be based on a review of properties located on the same side of the street in the same block, no less than 400 feet on either side of the subject property. Minimized visible garage requirements shall be required of new development when at least 50% of those properties have minimally visible garages. For purposes of determining this requirement, minimally visible garage shall mean a property where the garage is in the rear yard. In cases where the predominant pattern should be determined by other means, based on the subject property's location, topography and proximity to corners, the director shall decide on the averaging method.
      (2)   Requirements. When the predominant pattern requires a minimized visible garage. The following regulations shall apply:
         (a)   Attached garages shall be setback a minimum of 20' from the front facing wall of the primary structure closest to the street.
         (b)   In the front yard setback, paved driveways shall be limited to 14' in width leading to a two-car garage and 10' in width leading to a one-car garage.
         (c)   Side loading garages shall not be permitted in front of the primary structure.
         (d)   Garages attached to the rear of the primary structure, or which are otherwise not visible from the street shall be allowed to add an additional 400 square feet added to the maximum size of the primary structure. This provision only applies to properties developed with single family dwellings.
      (3)   Properties developed with more than one dwelling unit, the primary structure shall be the dwelling closest to the street.
      (4)   Exemptions. Properties not covered by the minimized visible garage placement requirement shall be reviewed pursuant the applicable regulations of the zoning district where the property is located in addition to the neighborhood compatibility design review process.
   (D)   Irregularly shaped lots. For lots that are not generally rectangular in shape and if there is uncertainty on the method for determining lot orientation, lot depth and/or lot width, the committee shall have the power to determine the appropriate method. Existing development on the property and in the neighborhood shall be considered in making this determination. Once a determination is made and the resulting development is completed, a subsequent determination shall not be made to permit additional improvements that would make the previous improvements nonconforming.
   (E)   Lot consolidation. Consolidation or merger of lots in any residential zone requires a conditional use permit. In addition to the findings specified in §17.52.200, the Commission must also find that the proposed consolidation will not result in the demolition of a residential structure built prior to January 1, 1940 with architectural or known historic value.
   (F)   Mechanical equipment. Ground-mounted air conditioning mechanical equipment shall be set back at least five feet from a side property line, with the exception that in the rear yard area equipment may be set back three feet from the side and rear property lines. Roof-mounted mechanical equipment is not permitted, with the following exceptions:
      (1)   Equipment is entirely screened by building parapet; or
      (2)   Replacement of existing equipment shall be permitted if the equipment is of the same or of lesser dimensions and approved screening can be provided and it is economically impractical to relocate.
   (G)   Setbacks—corner cutoff. In all zones, no buildings, walls, fences, hedges, shrubs, ground signs or other physical obstruction higher than three feet above grade shall be located in the triangular area defined by the intersections diagramed on the following pages (the diagrams are not to scale).
   (H)   Swimming pools. Swimming pools shall not be located in the front yard and must be at least five feet from the side and rear property lines. Mechanical equipment is subject to the provisions set forth in division (E) above.
   (I)   Trash areas. All outside trash and garbage collection areas shall be enclosed or screened and garbage collection areas with gates and shall be located so as to allow for convenient pick-up and disposal.
(`83 Code, § 17.12.040) (Ord. 94-03 § 6, 1994; Ord. 97-08 §§ 1, 2, 1997; Ord. 2001-10 § 4, 2001; Ord. 2002-04, § 4, 2002; Ord. 2004-11 § 7, 2004; Ord. 2016-08 §§ 29 - 31, 2016)

§ 17.12.060 INCENTIVES FOR RETENTION OF RESIDENTIAL STRUCTURES.

   (A)   Purpose. In order to facilitate the preservation of existing residential structures that contribute to the character of the neighborhoods of Monrovia, certain regulations in this title may be deviated from in order to encourage retention of qualified structures.
   (B)   Properties subject to this section. The incentives in this section apply to residential structures in residential zones that are 50 years old or older and have architectural values as determined by the Historic Preservation Commission. The qualification will be based on the condition of the existing structure, its architectural integrity and historic value, and the proposed development and restoration plan for the property.
   (C)   Exceptions and variances. The provisions in this title may be deviated from if the Committee or the Commission determines that the value of preserving the structure outweighs potential impacts of the approval of a minor exception approved pursuant to § 17.52.110 or major variance approved pursuant to § 17.52.120.
(Ord. 2004-11 § 9, 2004; Ord. 2016-10 §§ 8, 9, 2016)