1. New and Established Residential Neighborhoods. Set out in Section 25.03.020, Standards for Established Neighborhoods, and Section 25.03.030, Standards for New Neighborhoods, are the maximum density and lot and building standards for each residential district and neighborhood type. The maximum density varies according to the amount of open space provided in the development. Also, this Division describes how bonus density may be realized for the provision of energy efficient housing.
2. Nonresidential and Mixed Use Development. Set out in Section 25.03.040, Standards for Nonresidential and Mixed Use Development, is the maximum intensity (floor area ratio) and lot and building standards for each district. Also set out in this Section is the limits on the scale of nonresidential development in residential and mixed-use districts, as well as how floor area bonuses may be realized for LEED certified buildings.

1. Maximum Number of Dwelling Units.
   1. Application. The standards set out in Table 25.03.030.1, Residential Development Standards, shall be used to determine the buildable area and maximum number of dwelling units that may be developed for each district and each neighborhood type (e.g. standard, cluster, planned, and traditional neighborhood development) within the district.

      1. The buildable area is derived by multiplying the size (in acres) of the parcel proposed for development by the required minimum open space ratio (OSR) (see column 3), and then subtracting this acreage from the total acreage.

      2. The maximum number of dwelling units is derived by multiplying the size (in acres) of parcel proposed for development by the maximum gross density (see column 4), rounded to the nearest whole number (e.g., 25.01 to 25.49 is rounded to 25 units whereas 25.50 and above is rounded to 26 units).

   2. Sample Calculation. Suburban Residential (SR) district, planned neighborhood type, as set out in Table 25.03.030.1, Residential Development Standards.

      1. 20 acre parcel proposed for development

      2. 20 acres multiplied by a minimum open space ratio (OSR) of 0.35 = 7 acres

      3. 20 acres minus 7 acres of open space = 13 acre buildable acres

      4. 13 buildable acres multiplied by 3.5 units per acre = 45.5 units, rounded to 46 units.

   3. Standards. The standards set out in Table 25.03.030.1, Residential Development Standards, include the following for each district and type of neighborhood:
      1. Minimum lot size;
      2. Minimum open space ratio (OSR);
      3. Maximum gross density;
      4. Minimum area of development; and
      5. Public or on-site utility requirement.
2. Lot and Building Standards.
   1. Application. Once the maximum number of dwelling units is determined for the applicable district and neighborhood type, as described in Item 2.a, above, the lot and building standards establish the required dimensions for each type of housing (single-family detached or single-family attached and multiple-family) that is allowed in each district.
   2. Standards. The dimensions set out in the tables in 25.03.030.3, Lot and Building Standards, include:
      1. Minimum lot area and width;
      2. Minimum front yard, interior side yard, street side yard, and rear yard setbacks;
      3. Maximum building height; and
      4. Impervious coverage ratio.
3. Height and Area Exceptions. Set out in Section 25.03.050, Height and Area Exceptions, are the height and area exceptions and allowable encroachments in the residential and nonresidential and mixed use districts.
4. Accessory and Supplemental Standards. Set out in Subchapter 25.03-B, Accessory and Supplemental Standards, are the standards for accessory buildings and structures and accessory uses for all uses, residential uses, and nonresidential and mixed uses, respectively.

1. Design shall enhance the image of Sioux City;
2. Design shall consider the history and regional characteristics, as well as the physical context and climate of Sioux City;
3. Districts and neighborhoods shall contain compatible design elements;
4. Design of structures, parking, and landscaping shall form a coherent and compatible plan;
5. Site planning and landscaping are as important as architecture;
6. Significant public views shall be maintained;
7. Sunlight shall be incorporated into site planning;
8. Functional and attractive pedestrian circulation shall be provided within and between each district and neighborhood;
9. Vehicle circulation patterns shall be functional and efficient;
10. Projects shall be designed to be attractive and functional in all seasons; and
11. Structure, size and placement shall be appropriate for the project site and its immediate environments.

1. By developers and architects in project design.
2. By City staff in:
   1. Application review for site plans and development plans to ensure consistency with the guidelines set out in "Incorporation by Reference," below;
   2. The development of special area plans, urban renewal plans, and infrastructure plans, as applicable;
   3. Amending the street design manual, subdivision regulations, and other applicable standards for land and infrastructure development; and
   4. Project design for public infrastructure projects (e.g., streets, drainageways, parks, etc.), as applicable.
3. Incorporated into the terms of development agreements for planned neighborhoods and traditional neighborhood developments (TNDs).
4. Incorporated into actions as enforceable conditions of approval by the Historic Preservation Commission, Planning and Zoning Commission, and City Council.

1. Sioux City Design Works Design Guidelines;
2. Historic Fourth; Design Guidelines for the Historic District; and
3. Sioux City Historic Pearl District Design Manual.

1. The placement of a principal building in a perpendicular or sideways orientation on an interior lot or through lot is prohibited. See Figure 25.03.140, Building Placement.
2. All single-family detached and single-family attached residences and single building residential development (e.g., apartment building) shall be designed such that a primary entrance and windows face street right-of-way, except:
   1. Where the topography causes the lot shape and width to limit the orientation of the residence;
   2. When the lot exceeds 12,000 square feet; or
   3. When the front setback exceeds 50 feet.
3. There shall be a maximum of one principal building per single- and two-family (duplex or twin home) residential lot, subject to the provisions of Section 25.02.260, Accessory Dwelling Units, as applicable.
4. Each principal building may include an attached garage with an area that shall not exceed the ground floor area of the permanent four season living area.

5. Plant one small tree or evergreen, as defined in Section 25.05.080.1, per lot.

   1. Tree planting required between building permit and issuance of a certificate of occupancy.

   2. Location of tree planting is the front yard and not located in the City right-of-way.

1. Access. Where a manufactured home park contains 20 or more units, at least two points of ingress and egress shall be provided.
2. Access to Public Streets. Each manufactured home park must abut and shall have access to a dedicated public street with a right-of-way of at least 60 feet. Direct access to a manufactured home space from street right-of-way is prohibited.
3. Lots. Lots shall be dimensioned as set out in Table 25.03.030.3A, Single-Family Attached and Multiple-Family Lot and Building Standards.
4. Building Separation. A minimum distance of 20 feet shall separate each manufactured home.
5. Improvements. Each lot shall have a concrete parking pad that is four inches thick and measures a minimum of 10 feet wide by 26 feet deep, or of an adequate width to accommodate double-wide or triple-wide manufactured home units.
6. Perimeter Setbacks. Each manufactured home park shall have a minimum perimeter setback of 30 feet from adjacent nonresidential districts or uses and 50 feet from adjacent residential districts or uses. No space for a dwelling unit or any other structures shall be permitted in this required setback.
7. Separation and Setback for Accessory Buildings.
   1. An accessory building or structure on a manufactured home lot shall maintain a minimum rear and side yard setback of five feet; and
   2. A minimum of 10 feet shall be provided between any manufactured home and an unattached accessory building.
8. Solid Waste Facilities. If common refuse containers are provided by the manufactured home park, then one container shall be provided for each 10 lots, according to the standards set out in Subsection 25.03.080.2, Refuse Containers.
9. Screening. A solid fence or wall shall be installed along all side and rear property lines of the parcel proposed for development according to the standards set out in Subsection 25.03.090.3, Fences and Walls. The property owner shall maintain the fence or wall in good repair.
10. Vehicular Circulation. The manufactured home park must provide interior vehicular circulation on a private internal street system. The street system shall be continuous and connected with other internal and public streets; or shall have a cul-de-sac with a minimum diameter of 90 feet. No cul-de-sacs shall exceed 300 feet in length.

1. Supervision to maintain facilities and equipment in good repair, and in a clean and sanitary conditions;
2. Maintain an as-built site plan showing space locations and numbers;
3. Require that licensed installers be used in the placement of units; and
4. Notify occupants of their responsibilities, as follows:
   1. Maintain their homes, lots, facilities, and equipment in good repair and in clean and sanitary conditions;
   2. Be responsible for proper placement of the unit and installation of all utility connections;
   3. Install proper skirting; and
   4. Abide by all other regulations, requirements, and laws of the City and State.

1. The architectural style of the front facade of the building(s) shall be expressed on all sides of the building(s) fronting on or most directly facing street right-of-way or a private street easement within 150 feet of street right-of-way.
2. The rear facade of a building shall not face street right-of-way; provided, however, in the case a rear facade must face street right-of-way by way of parcel size or orientation, the facade will be constructed of 50 percent decorative materials and a Type B bufferyard shall be provided between the building(s) and street right-of-way.
3. Residential buildings located within the interior of a multiple-family development that are not fronting on or most directly facing street right-of-way are exempt from these architectural standards.

1. Decorative Materials. A building elevation fronting on or most directly facing street right-of-way, drive aisle, parking lot, or a single-family neighborhood shall be constructed of a minimum of 50 percent of three or more building materials, two of which shall be decorative materials, excluding doors. All other building elevations other than those described above shall be constructed of a minimum of 25 percent decorative materials.
   1. Brick, including thin brick;
   2. Stone, including cast stone;
   3. Glass;
   4. Architectural masonry units in the following styles:
      1. Split face;
      2. Weathered face;
      3. Sandblasted face;
      4. Ground face.
   5. Fiber cement siding.
2. Standard Materials. The remainder of building elevation(s) may be constructed of the following building materials:
   1. Exterior Insulation and Finish System ("EIFS") may be used provided the use of a 20 oz. high impact mesh below eight feet above grade;
   2. Vinyl siding; 
   3. Wood materials, or combination thereof; or
   4. Portland cement stucco.
3. Limited Materials. Materials that may be used for exterior walls, siding, or cladding with the approval of the Planning and Zoning Commission include:
   1. Metal wall panels;
   2. Corrugated or ribbed metal panel;
   3. Smooth-faced or un-textured, unfinished concrete blocks; and
   4. Metal siding.
4. Prohibited Materials. The following building materials are prohibited on all multiple-family buildings:
   1. Plywood;
   2. Plastic;
   3. Wood fiberboard;
   4. Under-fired or unfired clay, sand, or shale rock; and
   5. Painted brick, manufactured stone, concrete masonry units, and cementitious stucco.
5. Other Materials. Other building materials may be used by approval of the Administrator if it is demonstrated that they have comparable durability, impact resistance, and aesthetic quality as the materials permitted in Items 3.a. and 3.b., above, or either:
   1. They are part of a building that is designed to achieve a minimum bronze certification in Leadership in Energy and Environmental Design ("LEED"), and the materials qualify for LEED points under both the "energy and atmosphere criteria" and the "materials and resources criteria" of the LEED checklists; or
   2. They are part of a building that is EPA certified as designed to earn ENERGY STAR, and the materials substantially improve the energy efficiency of the building compared to materials that are permitted by Items 3.a., and 3.b, above.

1. A multiple-family building containing more than eight dwelling units shall be designed to break up a rectangular floor plan and avoid a box-like or monolithic appearance. (See Figure , Illustrative Application of Building Design Standards)
2. Any of the following techniques, or any technique that would produce a comparable effect, may be used to avoid the appearance of a box-like or monolithic building:
   1. Varying roof lines;
   2. Changes in wall planes of at least five feet at intervals of not more than 60 feet;
   3. The use of dormers, bay windows, or other windows that create dimension that break up the facade;
   4. Balconies that are used irregularly, some projecting, some recessed;
   5. Primary entrance treatments that are recessed or project from the main facade; and
   6. Changes in floor plans that create rooms with corner windows.
3. Stairs that provide primary access to units on upper floors shall be covered.
4. Awnings, where installed, shall be constructed with fabric or metal coverings. Plastic coverings are prohibited.
5. Elements such as eaves, rakes, cornice lines, or frieze boards shall be used to contribute to the visual interest of the building.
6. Columns, cornices, and similar elements shall be natural or simulated natural elements such as wood, composite material, architectural metal, or stone.
7. Balcony and railing materials may be different than the materials used on exterior walls.
8. Foundations that have more than two feet of exposure shall be faced with brick or stone veneer. Exposed cinder block and concrete are prohibited.

1. Private club;
2. Indoor recreation/personal fitness;
3. Event facility; and
4. Within one block of the "C" Sub-District:
   1. Place of assembly; and
   2. Live-work townhomes.

1. Core ("C"), which is the location for the most intense development, including nonresidential, vertically mixed-use, and/or multiple-family development, as well as civic uses and public gathering spaces (e.g. plazas, greens, squares, etc.).
2. General ("G"), which is the location for most of the housing in the development.
3. Edge ("E"), which is the location for the least intense development, in the form of relatively large-lot single-family detached dwellings. The edge is intended as a transition to the abutting or adjacent development, which may either exist, be zoned for, or reflected on the City's future land use plan. If the plan reflects the adjacent future use as Agriculture (AG) or Rural Residential (RR), the lots that form the edge shall have a lot area of no less than 12,000 square feet.

1. Generally. The standards of this Section with respect to site design shall supersede any standards on the same point elsewhere in this Code.
2. Open Space and Recreation Areas.
   1. Generally, open spaces should be integrated into the development design to bring significant open space to the maximum number of properties, as well as visibility from street rights-of-way within and adjacent to the proposed development. Small, left-over open spaces should be avoided. Extra landscaping may be required to enhance the value of such left-over spaces where they cannot be avoided.
   2. Open space shall be designed to provide greenways and riparian setbacks around water bodies and along drainage corridors and streams. Any existing vegetation around water bodies and along corridors or streams shall be preserved. Any newly planted vegetation shall be designed to enhance the filtering of surface and subsurface water flows. Trails shall provide access along the greenways for the residents of the development.
   3. Formal open spaces (e.g. plazas, greens, and squares) should be designed to provide areas of focus within the development. Landscaping and amenities for pedestrians should be installed to enhance this effect.

3. Accessibility of Recreation Areas: Outdoor recreation areas shall be provided throughout the development, such that no less than 75 percent of the residential units in the development (and 100 percent of the units in the "C" sub-district) are located within 1,320 feet of an outdoor recreation area. For the purpose of this provision, a plaza, green, or square with features that provide recreational opportunities (e.g., interactive fountain or sculpture, tot lot, etc.) shall be considered an outdoor recreation area.

4. Blocks.
   1. Although a strict grid is not required, blocks shall be arranged in grid-like fashion to ensure connectivity and accessible travel routes within the development.
   2. Blocks shall not be longer than:
      1. 400 feet in the case of non-residential, mixed-use, and multiplex and multiple-family buildings;
      2. Eight lots (per side) in the case of single-family detached dwelling units; or
      3. 15 lots (per side) in the case of single-family attached dwelling units (except multiplex and multifamily).
   3. Cul-de-sacs may be used only in the "E" sub-district, but only where necessary due to site constraints.
5. Streets, Alleys, Sidewalks, and Trails.
   1. An efficient multi-modal circulation system that includes streets, alleys, sidewalks, and trails shall be provided throughout the development.
   2. Streets shall be designed to provide connectivity within the development, and connections to adjacent neighborhoods. Where abutting property is not yet developed, stub-outs shall be required in appropriate locations for future connections.
   3. Streets: The plans for the proposed development shall show a hierarchy of streets within the TND, with cross-sections that comply with Subchapter 25.04-B, Streets, Sidewalks, Trails, and Utilities (Reserved), or as otherwise required by the City.
6. Alleys: Privately-maintained alleys may be installed in the "C" or "G" Sub-Districts to provide service and parking access.
7. Sidewalks: Sidewalks shall be installed on both sides of all streets, and shall be designed as follows:
   1. "C" sub-district – 8’
   2. "G" sub-district – 6’
   3. "E" sub-district – 4’
8. Trails: Off-street trails and multi-use paths shall be installed to connect open space and recreational areas, and to connect to existing or planned trail systems in the City. Trails shall be eight feet wide and paved with asphalt or concrete. Trails may be installed in lieu of sidewalks where they provide direct access to each dwelling unit.
9. Utilities. All utilities shall be installed underground, except those existing overhead utilities that are required by the utility provider to remain above-ground. Fiber-to-the-home, or other comparable technology for Internet access, is encouraged if available.
10. Relation to Adjacent Parcels. Development that is approved pursuant to this Section shall be designed to be compatible with the existing or planned future use of adjacent parcels, in at least one of the following ways:
    1. The lot width and design of development at the perimeter of a TND (within the "E" sub-district) shall be comparable with the lot width and design of abutting subdivisions. If the abutting parcel is not subdivided, lot area shall be no less than 12,000 square feet.
    2. As an alternative, bufferyards may be installed as follows (See Section 25.05.100, Bufferyards):
       1. Between the "C" sub-district and abutting:
          1. Residential development: Class C bufferyard; or
          2. Industrial development: Class D bufferyard;
       2. Between the "G" sub-district and abutting:
          1. Residential or commercial development: Class B bufferyard; or
          2. Industrial development: Class D bufferyard;
       3. Between the "E" sub-district and abutting:
          1. Residential development: Class A bufferyard;
          2. Commercial development: Class C bufferyard; or
          3. Industrial development: Class D bufferyard.

1. Unique Standards. In lieu of the standards set out in Section 25.03.180, Nonresidential and Mixed-Use Design Standards, developments that are approved pursuant to the design standards of this Item shall provide a set of architectural design standards for review and recommendation by the Planning Commission and approval by the City Council. The architectural design standards must provide elevations and illustrations of proposed building types and lists of proposed building materials. This document controls subsequent development in the TND.
2. Sign Program. A comprehensive sign program shall be approved as set out in Section 25.05.190, Sign Design Program. The program is intended to provide a unified theme for signage throughout the development, including form, design, color, materials, illumination, dimensions, and appropriate limitations. This document controls subsequent development in the TND.
3. Standards for Approval.
   1. The City shall consider the following factors in the approval of proposed architectural design standards:
      1. Buildings are articulated and detailed to provide visual interest and avoid undue imposition of building mass on the street;
      2. The design of buildings comply with Section 25.03.140, Single-Family, Duplex, Twin Home, and Townhome Design Standards; Section 25.03.160, Multiple-Family Housing Design Standards; and Section 25.03.180, Nonresidential and Mixed-Use Design Standards;
      3. Front porches are provided on all residential units except townhomes, multiple-family buildings, and mixed-use buildings;
      4. Buildings, accessory buildings, garages, fences, and garden walls comply with the applicable standards of this Code; and
      5. The architectural styles of the proposed building elevations are complimentary with each other (although landmark buildings with contrasting architecture may be approved at terminal vistas within the "C" sub-district).
   2. The City shall consider the following factors in the approval of a proposed sign design program:
      1. The scale of the proposed signs;
      2. The proportionality of the signs with the building faces to which they will be attached;
      3. The form of the proposed signs;
      4. The aesthetic quality of the signs (without reference to their content);
      5. The quality of the materials of the signs;
      6. The nature and intensity of proposed illumination; and
      7. The nature of any proposed limitations, and their appropriateness to ensure that signage reflects the desired quality and character of the proposed development.

1. Compliance with Standards. New development, redevelopment, and building modifications or expansions that comply with the standards set out in Table 25.03.020.3, Development Standards, for the applicable sub-district are allowed in that sub-district.
2. Noncompliance with Standards. If a proposed building modification or expansion do not comply with the standards set out in Table 25.03.020.3, Development Standards, then the application shall be evaluated according to the alternative setback standards of 25.03.020.4, Alternative Standards.

1. Buildings. All buildings that lawfully existed or were the subject of an active building permit on the effective date of this Code are "conforming" buildings with respect to the height and setback requirements set out in this Section if they are located in the NC.1, NC. 2, NC. 3, NC.4, and NC.5 sub-districts. However, this Item does not make the following buildings conforming:
   1. Buildings that were constructed without required permits;
   2. Buildings that were constructed in violation of permit requirements;
   3. Buildings that were razed and are proposed for reconstruction when not in conformance with the standards set out in Table 25.03.020.3, Existing Neighborhood Lot and Building Standards, or those of 25.03.020.4, Alternative Standards.
   4. Buildings that were constructed on substandard lots;
   5. Buildings that were permitted and originally constructed as a single-family detached dwelling and later converted to multiple-family units; and
   6. Buildings that were permitted and originally constructed as a single-family detached dwelling and later converted to a boarding home.

2. Lots. All lots that lawfully existed on the effective date of this Code are "conforming" with respect to lot width and lot area if they are located in the NC.1, NC. 2, NC. 3, NC.4, and NC.5 sub-districts. The lot width and lot area requirements set out in Table 25.03.020.3, Development Standards, apply only to the subdivision or combination of existing lots or parcels within these sub-districts after the effective date of this Code. However, this Item does not make the following lots conforming:

   1. ​Lots that were originally platted as conforming lots and later split by a metes and bounds description into a substandard lot; and

   2. Substandard lots for which the holder of legal title is separate from the ownership of the originally platted and abutting lot.

1. The proposed construction does not interfere with planned expansion of right-of-way, and if right-of-way expansion is planned, the encroachment is evaluated as if the right-of-way has been expanded;
2. The proposed construction does not result in interference with a utility easement;
3. Drainage onto abutting properties or rights-of-way is not significantly altered, and drainage patterns are not substantially changed, when compared to the condition before the proposed development;
4. The proposed construction does not result in a nonconformity with respect to the building code on either the lot proposed for development or abutting properties;
5. If the parcel that abuts the improvement is used for residential purposes, the proposed construction is built to building code standards that would allow construction of the abutting lot to be built to the same standard along the same setback line;
6. The proposed construction conforms to building coverage limitations; and
7. The proposed construction does not reduce the area provided for parking to fewer spaces than required or than currently accommodated.

1. Enclosure of Existing Front Porch. Front setbacks may be reduced by up to two feet from their existing location in order to enclose an existing, unenclosed front porch.
2. Addition of Front Porch. Front setbacks may be reduced by up to five feet from the standards set out in Table 25.03.020.3, Development Standards, in order to allow for the construction of a front porch, provided that:
   1. The added front porch would not be located closer than 15 feet to the front property line;
   2. The front setback with the added front porch is not more than eight feet different than the front setbacks of the homes on either side (or one side if situated on a corner lot);
   3. The gross floor area of the front porch that is in the reduced setback area is not more than 80 square feet; and
   4. The porch may be enclosed with a screened or window enclosures, but shall not be fully enclosed with walls.
3. Front Setback Averaging. See 25.03.050.1, Residential Districts.
4. Garage Behind Principal Building. Front setbacks may be reduced by five feet from the standards set out in Table 25.03.020.3, Development Standards, if:
   1. The garage is detached and located at least 25 feet behind the front building line of the principal building; or
   2. The garage is attached, but the garage door is set back at least 20 feet behind the front building line of the principal building.
5. Front Yard, Side-Loaded Garage. Front setbacks may be reduced by 10 feet from the standard set out in Table 25.03.020.3, Development Standards, if:
   1. There is one or more side-loaded garages on the block face or in the immediate neighborhood;
   2. The lot is at least 85 feet wide and takes vehicular access from the front;
   3. The reduced setback is applied only to a side-loaded garage;
   4. The side-loaded garage is constructed of the same or similar materials and design to match or complement the existing principal building;
   5. At least two trees (small or evergreen) are planted between the side-loaded garage and the street; and
   6. The portion of the side-loaded garage that faces the street shall include at least one window that is of the same style and proportion as windows used on the front façade of the principal building.

1. Wide Planting Strip. The street side setback may be reduced by up to five feet if:
   1. There is an existing sidewalk along the side street that is at least four feet wide;
   2. A planting strip maintained by the property owner is located within the street right-of-way between the edge of the sidewalk and the property line;
   3. The planting strip is at least five feet wide along the portion of the property that would be affected by the setback reduction; and
   4. The street is classified as a local street and there are no plans for expansion or widening of the paved width of the street.
2. Subdivision Fencing Along Arterial or Collector Street. The street side setback may be reduced to five feet if:
   1. The street side yard abuts a Type B bufferyard that screens the development from an arterial or collector street;
   2. The bufferyard includes an opaque fence that complies with the standards of 25.03.090.3, Fences and Walls, with respect to the continuity of subdivision fencing, and separates the side yard from the street;
   3. There is at least four feet of clearance between the building wall of the dwelling unit and the fence at all points;
   4. The setback reduction applies to not more than 40 percent of the length of the side building wall of the dwelling unit;
   5. The portion of the building to which the reduced setback applies is not more than one story in height; and
   6. The side yard setback complies with [@@908], Sight Distance Requirements (Reserved), or as otherwise required by the City.

1. Abutting Permanent Open Space. Rear setbacks that abut lots or parcels that are designated as permanent open space or an easement that is at least 15 feet wide along the distance of the lot proposed for development may be reduced to 10 feet.
2. Subdivision Fencing Along Arterial or Collector Street. The rear setback may be reduced to 10 feet if:
   1. The rear yard abuts the right-of-way for an arterial or collector street;
   2. An opaque fence that complies with the standards of 25.03.090.3, Fences and Walls, with respect to the continuity of subdivision fencing, separates the rear yard from the street;
   3. The setback reduction applies to not more than 40 percent of the length of the rear building wall of the dwelling unit; and
   4. The portion of the building to which the reduced setback applies is not more than one story in height.

1. Exemption for Detached Garage. See 25.03.090.1, Accessory Buildings and Structures, regarding a one-time exemption from the building coverage limitations for construction of a detached garage.
2. Building Coverage Ratio. The City may approve up to five percentage points of additional building coverage ratio if it is demonstrated that:
   1. The impact will be no greater than it was before the construction of the additional building area, including the detached garage exemption; and
   2. The volume of the resulting building is not greater than the volume of a two-story building that could be developed at the applicable maximum building coverage, as set out in Table 25.03.020.3, Development Standards.

1. All subdivisions that meet the minimum area of development, as applicable;
2. Re-subdivisions of property that create two or more buildable lots; or
3. Single-family attached or multiple-family developments with two or more dwelling units on a single parcel.

1. District and Neighborhood Type sets out each zoning district and the neighborhood types permitted with them.
2. Minimum Lot Size sets out the lot size that is used together with the minimum open space ratio (OSR) to establish the maximum gross density (i.e. maximum number of dwelling units) for each neighborhood type.
3. Minimum Open Space Ratio (OSR) sets out the minimum amount of common open space that is required for each neighborhood. The open space may be used to preserve environmental resources (e.g. steep slopes, unstable soils, woodlands, floodplains and riparian areas, etc.), provide open space for recreational amenities (e.g. parks, trails, and greenways), and/or to buffer adjacent development.
4. Maximum Gross Density sets out the maximum number of dwelling units per acre that may be constructed by-right in each district and for each neighborhood type.
5. Minimum Area of Development sets out the minimum area of land required to develop cluster or planned neighborhoods, or a traditional neighborhood development (TND).
6. Utility Requirement sets out whether on-site utilities (well and septic) are allowed or whether public utilities are required. This requirement is based on the minimum lot size and development density.

1. Equal to or Greater. The average lot area and average lot width for each neighborhood or housing type are equal to or greater than the lot area and lot width specified for the respective neighborhood and housing types set out in Table B, Single-Family Attached and Multiple-Family Lot and Building Standards.
2. Greater than 90 Percent. No lot has a lot area or lot width that is less than 90 percent of that specified in these tables. (See Figure 25.03.030.4, Lot Averaging)

1. In standard and cluster neighborhoods, different sized lots (small lots, average lots, and large lots) shall be mixed on each street segment so that they are spread through the development. Concentrating lots of a single lot size in separate areas of a development is not allowed.
2. In a mixed housing neighborhood or traditional neighborhood development, a mix of housing types or diverse single-family detached lot sizes may be designated on a single block or street segment. Such developments are not required to comply with the above requirement for standard and cluster neighborhoods.

Density Bonuses for Open Space Preservation and Environmental Preservation. Set out in Table 25.03.030.1, Residential Development Standards, is the maximum gross densities that are permitted for each district and neighborhood type. In each district, there are different neighborhood types that are permitted by-right. The acreage and standard neighborhood types provide for the largest lot sizes, the least amount of required open space, and hence, the lowest maximum gross density of the neighborhoods available within the district. The cluster and planned neighborhood, as well as traditional neighborhood development, each provide relative increases in gross density. To achieve these increased densities, the lot sizes are decreased and the minimum open space ratios are increased. Effectively, these neighborhood types provide options for preserving increased percentages of open space for the purpose of protecting natural resources (e.g. floodplain, wetlands, riparian areas, woodlands, drainage ways, rivers and streams, etc.). Refer to Table 25.03.030.1, Residential Development Standards, as to the relative lot sizes, open space ratios, and gross densities of each district and neighborhood type.

1. Green Building Bonus. The permitted density of development that is set out in Subsection 25.03.030.1, Development Standards, may be increased by 10 percent if the applicant demonstrates compliance with the provisions of this Item. Such increase in density may be achieved by:
   1. Utilizing the provisions set out in Subsection 25.03.030.4, Lot Averaging, with a reduction in the width of narrow lots to 85 percent (vs. 90 percent) of the lot area or width specified for the housing type, as set out in Table 25.03.030.3A, Single-Family Detached Lot and Building Standards; and/or
   2. Altering the mix of housing types as set out in Table 25.03.030.3B, Single-Family Attached and Multiple-Family Lot and Building Standards.
2. Leadership in Energy & Environmental Design (LEED) for Homes Certification Requirements. The permitted density of development that is set out in Subsection 25.03.030.1, Development Standards, may be increased by 10 percent if the applicant demonstrates commitment to LEED for Home Certification for residential buildings in their proposed residential or mixed-use development, as follows:
   1. During a pre-application meeting, the Administrator, or an appointee, will meet with the applicant to discuss the proposed building design and anticipated LEED for Home Certification credits.
   2. Concurrent with the application for site plan or plat review, the applicant shall submit:
      1. A written letter of intent that indicates their commitment to achieve a LEED for Homes Certification on no less that 75 percent of all homes and associated infrastructure that is subject to LEED for Homes Certification rating that will be constructed in the proposed development; and
      2. LEED for Homes Certification checklists that show how the applicant intends to obtain the required certification.
   3. The density bonus will be granted by the Planning and Zoning Commission upon approval of the development plan or plat.
   4. Building permits for the development will be issued only upon demonstrated compliance with the approved LEED for Homes Certification checklist.
   5. Within 180 days of receiving the final Certificate of Occupancy, the applicant must submit documentation that demonstrates achievement of LEED for Homes Certification.

1. Height Exceptions.
   1. Any structure, principal use, or building erected or altered after the effective date of this Code shall comply with the height limitations of the district in which it is located, except as specified in this Item. However, in no case shall the exceptions listed below exceed the maximum height restrictions of the Airport Protection (AP) district, as set out in Subsection 25.02.060.1, Airport Protection (AP) Overlay District.
   2. The appurtenances listed below may exceed the prescribed height limit of the district in which they are located, provided they are normally required for a use permitted in the district in which they are erected or constructed. However, no appurtenance shall appreciably shade a solar array located on the same or any adjoining property.
      1. Belfries;
      2. Chimneys;
      3. Condensers;
      4. Cooling towers;
      5. Cupolas, domes, and spires;
      6. Elevator bulkheads;
      7. Flagpoles;
      8. Monuments;
      9. Observation or ornamental towers;
      10. Penthouses for other than living purposes;
      11. Solar arrays, collectors, condensers, and heat storage units, subject to the standards set out in Subsection 25.03.080.4, Solar Arrays.
      12. Stacks; and
      13. Standpipes and other necessary mechanical appurtenances and their protective housing.
2. Lot Area Exceptions. See Subsection 25.06.120.7, Nonconforming Lots.
3. Yards. Any building, structure, or principal use erected, altered, or established shall comply with the yard requirements of the district in which it is located, as set out in Subsection 25.03.020.3, Development Standards (for Established Neighborhoods) or Subsection 25.03.030.1, Development Standards (for New Neighborhoods), except as specified in this Item.
   1. The required yards for any building, structure, or use shall be contained on the same lot and in the same district as the building, structure, or use for which it is required.
   2. All required yards shall be open from the ground to the sky, except as specified in this Item.
4. Yard Encroachments.
   1. Eaves and cornices may extend no more than two feet into a required yard, except that eaves may encroach up to three feet into a required yard when such yard is 10 feet or more in width or depth. In the case of lot line homes, eaves and cornices shall either extend into a required yard or an access easement on the adjoining lot.
   2. Chimneys, when not more than four feet wide, may extend one foot into any required interior side yard or street side yard. Such chimneys may extend two feet into any yard when such yard is 10 feet or more in width or depth. Chimneys of more than four feet in width must conform to the yard requirements.
   3. Open, uncovered porches or terraces.
      1. Porches and terraces that are no higher than the floor level of the first floor above grade on the side of the building to which they are attached, and in no event higher than 30 inches above grade of the lot on the side of the building where such porch or terrace is located, may extend:
         1. Three feet into any required side yard, provided it is not closer than three feet to a side lot line;
         2. Ten feet into any required front yard, provided it is not closer than eight feet to the front property line; or
         3. Within no less than five feet of the rear lot line.
      2. No railing or other barrier that is higher than 42 inches shall be placed around a porch or terrace and no solid wall or barrier which blocks light or air shall be within five feet of any property line, except as otherwise provided in this Item.
      3. All porches and terraces shall be subject to street corner visibility requirements, as set out in Subsection 25.04.110.8, Sight Distance Requirements (Reserved), or as otherwise required by the City.
   4. Air-conditioning condensers may extend four feet into a required yard, provided the condenser is no more than three feet in height and 30 cubic feet in bulk.
   5. Solar energy collectors and heat storage units of up to 200 square feet of collector surface area may extend two feet into any required yard of 10 feet or more. A solar energy collector and heat storage unit of any size needed to supply the building to which it is appurtenant may be treated as an accessory use, subject to the provisions of Subchapter 25.03-B, Accessory and Supplemental Standards, and established according to the provisions set out in Section 25.02.270, Permitted Accessory Uses, Buildings, and Structures.
5. Fences and Hedges.
   1. Except in districts allowing the construction of buildings to the property line, there shall be provided an unobstructed view within the sight distance triangle, or as otherwise required by the City, within which there shall be no sight-obscuring or partly obscuring wall, fence, sign, or foliage that is more than 24 inches above curb grade or, in the case of trees, foliage that is lower than 10 feet above curb grade.
   2. On portions of a lot not within the sight distance triangle, the height of fences of any length, and foliage continuous for five feet or more, shall be limited to 48 inches on any street right-of-way and ahead of the front building line. On all other portions of lot lines, fences, hedges, and continuous foliage barriers may not exceed the standards set out in Subsection 25.03.090.3 Fences and Walls. However, a non-opaque fence may be placed around the grounds of a public or private school that may be up to 96 inches in height.
   3. Fences and hedges erected within the building envelope may conform with the building height limits for the district in which it is located, subject to all applicable building codes, as amended from time to time.
6. Exception. The Board of Adjustment may approve, or may direct as a condition for granting an appeal, that fences or hedges of a height in excess of those established in this Item be placed as buffering between uses, provided that no such approval shall have the effect of reducing sight visibility.
7. Platted Building and Setback Lines. If a recorded subdivision plat imposes a building or setback line for a lot which is greater than the minimum yards required in this Code, then, notwithstanding any other provision of this Code, the minimum yards shall be the greater of those shown on the subdivision plat or those set out in Subsection 25.03.020.3, Development Standards (for Established Neighborhoods) or Subsection 25.03.030.1, Development Standards (for New Neighborhoods).
8. Minor Modifications. The yard, space, and bulk regulations specified in this Code may include consideration of minor modifications that may be authorized by the Administrator, or a designee, as set out in Subsection 25.06.150.2, Repairs and Modifications.
9. Average Front Setbacks. Front setbacks may be reduced to the average front setback along the same side of the same street segment in the same district, provided that:
   1. The lot proposed for development is not counted in the calculation; and
   2. If the lot takes vehicular access from the front, the driveway must be at least:
      1. 25 feet long, measured from the property line at the street right-of-way to a building wall or garage door; and
      2. The width of the garage door(s) are not more than 18 feet or less than nine feet in width. (See Figure 25.03.050.1, Front Setback Averaging)

1. Height Exceptions.
   1. Any structure, principal use, or building erected or altered after the effective date of this Code shall comply with the height limitations of the district in which it is located, except as specified in this Item.
      1. In no case shall the exceptions listed below exceed the maximum height restrictions of the Airport Protection (AP) district, as set out in Subsection 25.02.060.1, Airport Protection (AP) Overlay District.
      2. No permit shall be granted for any structure exceeding 200 feet in height unless the applicant presents an approval from the Federal Aviation Administration (FAA) or its successor.
   2. In the Airport Protection (AP) district, nothing in this Code shall be construed as prohibiting the growth, construction, or maintenance of any tree or structure to a height of not more than 45 feet above the surface of the land, as allowed by the applicable district and as set out in Subsection 25.02.060.1, Airport Protection (AP) Overlay District. 
   3. The appurtenances listed below may exceed the prescribed height limit of the district in which they are located, provided they are normally required for a use permitted in the district in which they are erected or constructed. However, no appurtenance shall appreciably shade a solar array located on the same or any adjoining property.
      1. Belfries;
      2. Chimneys;
      3. Condensers;
      4. Cooling towers;
      5. Cupolas, domes, and spires;
      6. Elevator bulkheads;
      7. Flagpoles;
      8. Monuments;
      9. Observation or ornamental towers;
      10. Solar arrays, collectors, condensers, and heat storage units, subject to the standards set out in Subsection 25.03.080.4, Solar Arrays.
      11. Stacks; and
      12. Standpipes and other necessary mechanical appurtenances and their protective housing.
2. Yards.
   1. Any building, structure or use erected, altered, or established shall comply with the yard requirements of the district in which it is located, as set out in Subsection 25.03.040.1, Development Standards (for Nonresidential and Mixed Uses), except as specified in this Item.
      1. The required yards for any building, structure, or use shall be contained on the same lot and in the same district as the building, structure, or use for which it is required.
      2. All required yards shall be open from the ground to the sky, except as specified in this Item.
3. Yard Encroachments.
   1. Canopies and overhangs on any side of a building may extend no more than four feet into a required yard.
   2. Open, uncovered porches or terraces.
      1. Porches and terraces that are no higher than the floor level of the first floor above grade on the side of the building to which they are attached, and in no event higher than 26 inches above grade of the lot on the side of the building where such porch or terrace is located, may extend:
         1. Three feet into any required side yard, provided it is not closer than three feet to a side lot line;
         2. Ten feet into any required front yard, provided it is not closer than eight feet to the front property line; or
         3. Within no less than five feet of the rear lot line.
      2. No railing or other barrier that is higher than 42 inches shall be placed around a porch or terrace and no solid wall or barrier which blocks light or air shall be within five feet of any property line, except as otherwise provided in this Item.
      3. All porches and terraces shall be subject to street corner visibility requirements, as set out in Subsection 25.04.110.8, Sight Distance Requirements (Reserved), or as otherwise required by the City.
   3. For all other yard encroachments, see Subsection 25.03.050.1, Residential Districts.
4. Fences and Hedges. See Subsection 25.03.050.1, Residential Districts.
5. Exception. See Subsection 25.03.050.1, Residential Districts.
6. Parking. The required interior side yard or rear yard adjacent to a principal building may be used for automobile parking whereas parking is allowed in the required street side yard and front yard only as provided for by Table 25.03.040.1, Nonresidential and Mixed Use Standards.
7. Minor Modifications. The yard, space, and bulk regulations specified in this Code may include consideration of minor modifications that may be authorized by the Administrator, or a designee, as set out in Subsection 25.06.150.2, Minor Modifications.

1. Generally. Carports and porte-cocheres are allowed in the following locations:
   1. Within the building envelope for principal buildings and accessory buildings on all residential properties, except for multiple-family dwelling units.
   2. Within vehicular use areas (in the case of porte-cocheres, passenger loading areas) of multiple-family, nonresidential, and mixed-use development.
2. In the NC Sub-Districts. Carports and porte-cocheres may be constructed within the building envelope or outside of the building envelope, as follows:
   1. If carports and porte-cocheres exist on the block face or within the immediate neighborhood; and
   2. Support posts shall not be closer than:
      1. Four feet to any interior side property line; and
      2. Ten feet from a rear property line; and
      3. Ten feet from a front or street side property line.
   3. Carports and porte-cocheres shall not encroach upon or extend to within two feet of a sidewalk;
   4. Drainage from carports and porte-cocheres shall not impact adjacent properties;
   5. The canopy or roof structure (including overhangs) shall not extend past the support posts by more than two feet and in no case shall be closer than two feet to any property line;
   6. Carports, trellises, arbors, porte-cocheres, and similar structures shall be no less than 50 percent open on all sides, with the exception of a side (or sides) that abut a wall of the principal building; and
   7. Carports and porte-cocheres shall not be used for storage of any items that can be viewed from public street right-of-way, except motor vehicles. Storage of any items within a carport or porte-cochere shall be within a fully enclosed cabinet or closet that is located adjacent to the principal building and with a depth of no greater than 30 inches.

1. Refuse containers shall be located no more than 200 feet from the individual uses they are intended to serve;
2. If the container(s) are located in an alley, access shall be provided via the alley and used for the service of other properties;
3. Access to collection facilities shall be configured to meet the requirements of the refuse hauler;
4. The refuse container area shall be fully enclosed by an opaque wall constructed of masonry and designed to match or complement the architecture of the principal building.
5. The refuse container enclosure shall have the following (see Figure 25.03.080.2, Refuse Enclosure):
   1. The opaque wall shall be no less than six and not greater than seven feet in height;
   2. Opaque metal service gates that remain closed at all times, except when the container is being serviced;
   3. A separate opaque metal service pedestrian access gate or a pedestrian opening that screens the container(s) from view at all times except when it is being serviced;
   4. An adequate size to accommodate:
      1. One or more refuse containers that are of a sufficient size to service the development, based on the frequency of solid waste collection; and
      2. One or more recycling bins (whether provided at the time of development or not), based on the anticipated generation of recyclable materials and the frequency of collection.
6. The location of and access to refuse containers shall meet all engineering design standards of the City pertaining to maneuvering space.
7. Refuse containers shall be located in a side or rear yard of the parcel proposed for development, unless it is not possible to provide service access in either location. If an enclosure must be located in a front yard or street side yard, it shall be designed according to Item 2.e., above, with the exception that the enclosure shall be a minimum of eight feet in height;
8. The refuse facilities shall be spaced at least:
   1. Fifteen feet from residential lot lines that are part of the parcel proposed for development; and
   2. Thirty feet from residential lot lines that are adjacent to the parcel proposed for development.

1. May be made available for use by the general public.
2. Shall be clearly marked to identify the type of material to be deposited and the identity and phone number of the operator.
3. Shall be maintained in a clean, litter-free condition.
4. Shall have the following:
   1. Full enclosure by an opaque wall constructed of masonry and designed to match or complement the architecture of the principal building;
   2. A minimum height of six feet; and
   3. Opaque metal service gates that remain closed at all times except when the facility is being used.
5. Community recycling bins may be located:
   1. In a loading or service area that is at least 50 feet from property lines and screened according to Item 3.d., above; and
   2. In a refuse collection enclosure as set out in Item 2, above).

1. They are an appropriate engineering solution which is needed in order to mitigate the risk to life and property of a geologic hazard;
2. They are necessary to retain soils and stabilize sites; or
3. Their use is an appropriate engineering solution which is part of an approved erosion control plan, slope stability plan, or stormwater management plan.

1. Retaining walls shall be finished with timbers, railroad ties, or native rock or other masonry which conveys a scale and texture similar to that of natural rock or traditional materials found within the City.
2. Retaining walls shall be designed and stamped by an Iowa Registered Professional Engineer, specializing in Structural Engineering, under the following conditions:
   1. Any wall, four feet in height or greater, where its height exceeds its distance from a right-of-way line or a common property line; or
   2. Any wall six feet or greater at its highest point as measured from the top of the wall to the lowest adjacent ground level, not including its foundation depth.

1. Roof-Mounts. Solar arrays may be roof-mounted on principal buildings and accessory buildings.
2. Ground-Mounts. Ground- or structure-mounted (not mounted on buildings) solar arrays shall be set back from property lines distances equal to that of detached accessory buildings, subject to the encroachment allowances set out in Section 25.03.050, Height and Area Exceptions.
3. Carports and Covered Walkways. Carports and covered walkways may be covered with solar arrays if:
   1. There is not less than eight feet of clearance under the carport or covered walkway; and
   2. Solar panels that cover carports and walkways are set back from the front property line as required for principal buildings if located in a residential district.
4. Removal or Replacement of Damaged Arrays. If solar arrays are damaged, such that the damage is obvious when viewed from public right-of-way, then the arrays shall be removed or replaced within 60 days of the event that caused the damage.

1. Access.
   1. Driveway access to garages shall be no less than 10 feet wide and shall be constructed to the standards set out in Subsection 25.05.050.2, Access to Single-Family and Two-Family Lots (Reserved), or an otherwise required by the City.
   2. A driveway of no less than 20 feet in length shall be constructed to provide off-street access to the garage for which such length shall be measured from the face of the garage doors to the street right-of-way.
2. Setbacks. The setbacks for detached garages are as follows:
   1. Interior Side Yards. A detached garage may be located a minimum of five feet from the side lot line of the property if it is located in an area from the rear building line of the principal building to the rear property line and is under 16 feet in height. An additional one foot setback is required for every two feet above 16 feet in height, up to the maximum height set out in Item 8, Space Limitations for Detached Accessory Buildings and Structures, below.
   2. Front Yards. No detached garage may be located between the front building line of the principal building and the front property line, unless in accordance with the provisions for yard encroachments (i.e. steep slopes) in Subsection 25.03.050.1, Residential Districts.
   3. Rear Yards. The minimum rear yard setback for detached garages shall be five feet. This minimum rear yard setback shall be increased to 20 feet if the accessory building is a garage with a vehicular entrance door that is oriented toward an alley. Double-frontage lots shall require front yard setbacks along both street frontages per the district standards. Easements may be incorporated into these required setbacks. No detached garage shall be located within any easement or right-of-way along the rear property line.
   4. Street Side Yards. Any garage that fronts on public street right-of-way must be set back the greater of 20 feet or the minimum setback required by the district.
3. Single-Story Detached Garage as Perimeter Wall. A single-story detached garage may be constructed as a perimeter wall of single-family attached and multiple-family developments, provided that:
   1. The perimeter wall is horizontally offset at least two feet for every 50 feet in length (see Figure 25.03.090.1, Perimeter Garage Walls); and
   2. If the outside wall of a garage is used as part of a required bufferyard, it is installed on the inside boundary of the bufferyard.

1. Rain barrels shall be located behind the principal building or, if in an interior side yard or street side yard, they shall be screened by an opaque fence or landscaping that is one foot taller than the barrel.
2. Rain barrels shall be located no closer than two feet from an interior side or rear property line.
3. Rain barrels shall be covered with a screen to allow water to filter in but to prevent the breeding of mosquitoes if the top is open and no lid is used. If the rain barrel contains an overflow on the side, it too must be screened. If a rain barrel lid is fitted to feed directly from a gutter drain spout, and it has no other openings, then a screen is not required.
4. No more than one rain barrel with a maximum capacity of 55 gallons is permitted per single-family dwelling.

1. The following are permitted if they are attached to a building or mounted on a mast that extends not more than four feet in height nor having a diameter exceeding four feet, as applicable, above the peak of the roof:
   1. TV antennae;
   2. DTV antennae;
   3. Wireless cable antennae; and
   4. Satellite dishes.
2. All cabling must be run internally when feasible, securely attached, and as inconspicuous as practicable.
3. Height, setbacks, and building permit requirements for satellite, dish, or television or radio antennae shall be as provided in Table 25.03.090.5, Antennae Requirements.

1. On the roof or ground:
   1. Not visible from street right-of-way: Four.
   2. Visible from street right-of-way: Two.
2. On a building sidewall:
   1. Not visible from street right-of-way: Three
   2. Visible from street right-of-way: One

1. Masts that are greater than 10 feet above the peak of the roof are permitted if it is demonstrated that an adequate signal cannot be obtained at a lower height and:
   1. The mast and antennae are lower than overhead power lines or 20 feet, whichever is less. Masts and antennas must be set back from overhead power lines such that a collapse of the mast will not result in contact with the lines. Permission must be granted from the utility company if a mast or antennae will interfere, in any way, with the overhead power lines.
   2. The mast and antenna are designed to withstand a 90 mile per hour sustained windload.
2. Satellite dishes that are more than four feet in diameter are permitted if:
   1. They are located on the ground in a rear yard that does not abut street right-of-way and is not visible from ground-level views from public rights-of-way or abutting properties; and
   2. If the dish cannot be located in the rear yard, it is located on the ground within the permitted building envelope on the side of the building and the dish or antenna is fully screened from street right-of-way view with:
      1. A wood fence; or
      2. An evergreen hedge or shrub and understory trees.

1. Height, setbacks, and screening for the antenna structure shall be provided in Table 25.03.090.5, Antennae Requirements.
2. Support structures that are not attached to the antenna structure shall be treated as accessory structures for the purposes of height, setbacks, and building permit requirements.

1. Storage buildings are permitted as accessory structures on nonresidential lots in the General Commercial (GC) and Mixed Use (MU) districts, if it is demonstrated that the following criteria are met:
   1. The cumulative floor area of storage and utility buildings does not exceed two percent of the maximum floor area permitted on the lot;
   2. The floor area of any individual storage or utility building does not exceed 1,500 square feet;
   3. Storage and utility buildings are located only behind principal buildings;
   4. Storage and utility buildings are completely screened from adjacent properties and public rights-of-way view via hedges, buildings, or perimeter walls (see Subsection 25.03.100.3, Fences and Walls, and Subchapter 25.05-B, Landscaping and Buffering);
   5. Converted semi-trailers, manufactured homes, modular shipping containers, dumpsters, or similar structures or equipment shall not be used for storage; and
   6. Storage and utility buildings are used for property maintenance purposes, and not for commercial uses or storage for resale or goods or merchandise.
2. Storage buildings are permitted as accessory structures on lots in the Business Park (BP) and General Industrial (GI) districts, if it is demonstrated that the following criteria are met:
   1. If the storage building is larger than 200 square feet, it is located within the building envelope; or
   2. If the storage building is 200 square feet or less, it is situated behind the principal building and set back at least 10 feet from all side and rear property lines.

1. Canopies use a similar architectural style, materials, and roofing as the principal building.
2. Canopies are not used as an extension of signage beyond that which is allowed in Subchapter 25.05-C, Signs.
3. The trim of the canopy is not internally or externally illuminated.
4. Gasoline dispensing islands and service station canopies are set back 15 feet from front or corner side lot lines.

1. The car wash, except for an area for manually drying and polishing vehicles, is located entirely within a building;
2. The car wash building is designed with a similar architectural style, materials, and roofing as the principal building; and
3. The car wash building is buffered from public rights-of-way with a Class B bufferyard.

1. Footprint:
   1. In the General Commercial (GC) and Mixed Use (MU) districts, a maximum of 25 percent of the footprint of the principal building is permitted for detached accessory buildings or structures.
   2. In the Business Park (BP) and General Industrial (GI) districts, detached accessory buildings or structures are not subject to a specific maximum footprint, except in the following instances:
      1. The detached accessory building or structure is larger than 200 square feet, it shall be located within the building envelop; or
      2. The detached accessory building or structure is 200 square feet or less, it shall be located behind the principal building and set back at least 10 feet from all side and rear property lines.
2. Location and Setbacks: No detached accessory building or structure shall be located in a required front yard., within an easement, or located closer than six feet to any other building.
3. Height: No detached accessory building or structure shall have more than one-story or exceed 16 feet in height, whichever is less, unless it is located within the building envelop and permitted as an accessory to the business or manufacturing uses.

1. There shall be no more than one donation bin on any property or portion of a property unless approved by the Planning and Zoning Commission.
2. The bin shall not exceed a capacity of 512 cubic feet (8' x 8' x 8' maximum dimensions).
3. The bin shall be designed and installed in a manner that prevents the bin from tipping over.
4. The organization placing the bin shall:
   1. Disclose to the City by way of a written letter the intended recipient(s) of collected items and the percentage of funds or goods collected that will be paid or given to the nonprofit, charitable organization;
   2. Submit to the City a written letter from the property owner consenting to the placement and maintenance of the donation bin;
   3. Keep the bin in good repair, maintain the area around the bin free of litter, and remove any graffiti from the bin within 48 hours of discovery or notice;
   4. Clear the bin of its contents no less than every two weeks, or as needed, more often to prevent the placement of items outside of or around the bin; and
   5. Clearly mark in an area no greater than one square foot in size the name and telephone number of the registered nonprofit, charitable organization on the bin.
5. Bins shall be located:
   1. Only in a side or rear yard; and
   2. On a concrete surface that is not also a parking space and that does not, in any way, reduce the minimum required parking for the site on which it is located.
6. The location of bins shall not interfere with any of the following:
   1. Sight distance triangles;
   2. On-site parking, vehicular access, circulation, or maneuvering areas;
   3. Required setbacks;
   4. Landscaping, screening, and buffering;
   5. Other applicable requirements set out in this Code.

7. The bins(s) shall be enclosed by use of a receiving door and locked so that the contents of the bin may not be accessed by anyone other than those responsible for retrieval of the contents.

8. The bin(s) shall be screened on three sides by a continuous row of shrubbery with a minimum height (at planting) of no less than 36 inches. Such landscaping shall be installed and maintained in accordance with the standards set out in Section 25.05.170, Landscape Plan, Installation, and Maintenance.

1. Located behind a principal building; and
2. Screened from street right-of-way by building walls, fences, landscaping, or topography (including earthen berms).

1. The frontage is not an arterial street, highway,or interstate; and
2. The property on the other side of the street is also zoned General Industrial (GI).

1. The loading and truck access area is 100 percent screened by a bufferyard that has one level more opacity than required by the district boundary, as set out in Section 25.05.130, Bufferyards, and contains at least a six foot tall earthern berm or a low maintenance, durable solid fence or wall; or
2. The loading and truck access area is located under a roof, as illustrated in Figure 25.03.10.4, Service Area Enclosure, in which case the bufferyard may be reduced by one level of opacity than required by the district boundary.