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A. Subarea C Small Residential Lot Standards. In Subarea C, undeveloped land zoned R-1, R-2, or MU-A that has not been redesignated by the applicant for development pursuant to the standards for MU-N or MU-C development pursuant to Section 146-5.4.3.I (Administrative Activity Center Designation) may be subdivided and developed as described in this Section 146-4.2.3.A, provided the application complies with the following additional standards. The maximum residential dwelling density of three dwelling units per acre in the R-1 zone district and five dwelling units in the R-2 zone district shall apply, but any conflict between the standards in this Section 146-4.2.3.A and the lot dimension, size, and layout standards that would otherwise apply in Subsection C (including those standards for alternative-load garage setbacks in Section 146-4.6.5.C.8.a.iv) shall be resolved in favor of the standards in this Section 146-4.2.3.A. Three alternative development options are available: General (See this Section 146-4.2.3.A), Green Court (See Section 146-4.2.3.C), and Motor Court (See Section 146-4.2.3.E).

1. Purpose. The purpose of the Small Residential Lot single-family development standards is to create high-quality mixed residential developments that will retain their social and economic value over time and provide housing for individuals and families seeking convenience, a range of housing choices, and generous and high quality open space amenities. Small Residential Lot developments should be designed to provide a variety of lot sizes that are distributed in groupings throughout the development so that large areas of one lot size do not exist. The Small Residential Lot subdivision shall also be specifically designed to provide adequate light and air between units, adequate drainage between lots, interior and exterior privacy, open space relief on the individual lot and throughout the neighborhood, low maintenance building materials, innovative and architecturally interesting home design, attractive streetscapes, and adequate parking. In addition, the standards are designed to increase the variety of lot sizes, preserve open space, enhance natural features and site amenities, provide landscaped buffers, and promote energy conservation.

2. Minimum Lot Size. The following standards apply to all development of Small Residential Lots unless the Green Court Dwelling standards of Section 146-4.2.3.C or the Motor Court Dwelling standards of Section 146-4.2.3.E provide a different standard.

Table 4.2-5

Minimum Lot Size and Area for Small Residential Lot Developments Subarea C

Front-Loaded Residential Product

Min. Lot Frontage [1]

Min. Lot Area

Dwelling, single-family detached, standard

50 ft.

4,500 sf.

Dwelling, single-family detached, small

<50 ft. or

<4,500 sf.

Dwelling, two-family (duplex)

40 ft.

3,200 sf.

Alternate-Loaded Residential Product

Min. Lot Frontage [2]

Min. Lot Area [2]

Dwelling, single-family detached

30 ft.

1,500 sf.

Dwelling, two-family (duplex)

25 ft.

1250 sf.

Dwelling, motor court

See Section 146-4.2.3.E

Dwelling, single-family attached, only alley loaded product permitted

End units: 20 ft.

Interior units: 18 ft.

End units: 1,380

Interior units: 1,250 sf.

Notes:

[1] No front-loaded single-family detached dwelling may be located on a lot less than 45 ft. in width

[2] Minimum lot frontage or minimum lot area for Alternate-Loaded Product may not include an alley or common shared drive. The alley or shared drive may be located in a tract or public assess easement.

3. Amount and Distribution of Small Residential Lots. The following standards apply to all development of Small Residential Lots unless the Green Court Dwelling standards of Section 146-4.2.3.C or the Motor Court Dwelling Standards of Section 146-4.2.3.E provide a different standard. For purposes of this Section 146-4.2.3.A.3, single-family attached dwelling units do not count against the maximum permitted number of Small Residential Lots included in a Master Plan.

a. When included in a Master Plan or Site Plan, groupings of Small Residential Lots and single-family attached dwellings should be distributed throughout the Master Plan or Site Plan, regardless of the number of residential lots or Small Residential Lots included in the Master Plan or Site Plan.

b. In the R-1 zone district, no Master Plan may include more than 25 percent Small Residential Lots, regardless of the total number of residential lots included in the Master Plan.

c. In the R-2 and MU-A zone districts, no Master Plan containing fewer than 100 residential lots may include more than 35 percent Small Residential Lots.

d. In the R-2 and MU-A zone districts, a Master Plan containing 100 residential lots or more may include up to 50 percent Small Residential Lots subject to all of the following standards:

i. No more than 35 percent of the total number of lots in the Master Plan may be front-loaded Small Residential Lots.

ii. No more than 60 percent of the total number of lots in the Master Plan may be a single type as described in Section 146-4.2.3.A.8.

iii. A minimum of 40 percent of the total number of lots in the Master Plan must meet or exceed the standards for minimum lot width and minimum lot area for “single-family detached dwelling, standard” shown in Table 4.2-2.

iv. If a Master Plan includes 200 lots or more, a minimum 10 percent of the total number of lots must be lots with at least 60 feet of lot frontage and 6,000 square feet of lot area.

4. Minimum Residential Building Setbacks.

Table 4.2-6

Minimum Building Setbacks for Small Residential Lot Development in Subarea C

Front-loaded Residential Product

Front [1]

Side

Rear

Dwelling, single-family detached, standard

House = 15 ft.

Garage = 20 ft.

5 ft. or building code

10 ft.

Dwelling, single-family detached, small

House = 10 ft.

Garage = 18 ft.

Dwelling, two-family (duplex)

Alternate-Loaded Residential Product

Dwelling, single-family detached

House = 10 ft.

Porch = 5 ft.

5 ft. or building code

Alley-Loaded = 3 ft.

Green Court or Motor Court = per Section 146-4.2.3

Dwelling, two family (duplex)

Alley-Loaded = 3 ft.

Dwelling, single-family attached dwelling, only alley loaded product permitted

End walls = 10 ft.

Interior walls = 0 ft.

3 ft.

Notes:

[1] Porches and stoops with a front setback of less than 10 ft. may not have a roof element or associated structure taller than a single story. The 5 ft. porch setback shall be increased if necessary to accommodate utility infrastructure or required landscaping.

5. Required Open Space. The following standards apply to all development of Small Residential Lots unless the Green Court Dwelling standards of Section 146-4.2.3.C or the Motor Court Dwelling Standards of Section 146-4.2.3.E provide a different standard.

a. Private Open Space.

i. Each Small Residential Lot shall incorporate a private, usable outdoor space or spaces with direct access to the dwelling unit on the lot.

ii. The required private, usable outdoor space shall contain at least 180 square feet of area and have minimum length and width dimensions of 10 feet.

iii. If the required private, usable outdoor space is provided in more than one space on the lot, the total of all spaces must contain at least 200 square feet and each space must have minimum length and width dimensions of 10 feet; and shall be marked for private use.

iv. A front yard may be counted toward this requirement if the front yard meets the minimum dimensions described in Subsections ii or iii above and the space includes a front porch, deck or similar space with minimum dimensions of six feet by eight feet.

v. Patios, porches, roof top decks and similar spaces that are not located in the front yard may be counted toward the requirements of Subsection ii or iii, provided they have minimum length and width dimensions of 10 feet.

vi. A lot with frontage on a Green Court open space complies with the requirements of Subsection i or ii.

vii. A portion of the required private, usable outdoor space may be located on an adjacent lot if an easement restricting the use of that area to the owner of the subject lot easements is obtained and recorded.

viii. Driveway and parking areas shall not be counted toward meeting the minimum private, usable open space requirement.

b. Common Open Space.

i. Each Small Residential Lot and single-family attached dwelling must be within 1,320 feet of one of the following:

(a) A park or open space as defined by the Parks, Recreation, and Open Space Department, and for which the Parks, Recreation, and Open Space Department has given credit towards parks and open space dedication requirements, which may include but is not limited to a neighborhood park, a community park, or a pocket park.

(b) Designated open space, which may include a trail corridor provided that the trail corridor has a minimum width of 50 feet.

ii. As an alternative to the requirement in Subsection i above, the applicant may provide a privately maintained recreational facility that serves the residential development (such as a pool operated by a homeowners’ association or an area designated for development under the standards applicable to the Mixed-Use Neighborhood zone district), and that is located within 1,320 feet of each Small Residential Lot.

iii. The distance requirement in Subsection i. shall be measured from the closest point, measured radially, on the residential lot and the lot or tract containing the required park or open space.

iv. A Small Residential Lot development that meet the standards for Green Court Dwellings in Section 146-4.2.3.C has satisfied this common open space requirement.

6. Architectural Standards. All developments containing Small Residential Lots, including but not limited to those organized as Green Court Dwellings or Motor Court Dwellings, shall comply with the standards in Section 146-4.8.3 (Design Standards for Single-Family Detached and Two-Family Dwellings).

7. Garage Mitigation. The following standards apply to all development of Small Residential Lots unless the Green Court Dwelling standards of Section 146-4.2.3.C or the Motor Court Dwelling Standards of Section 146-4.2.3.E provide a different standard.

a. At least 50 percent of all lots with 50 feet or more of frontage and 4,500 or more square feet of lot area shall contain Alternate-Loaded Residential Product or have garages recessed as described in Section 146-4.6.5.C.8.a.ii.

b. At least 75 percent of lots with less than 50 feet of frontage or less than 4,500 square feet of lot area shall contain Alternate-Loaded Residential Product or must have garages recessed as described in Section 146-4.6.5.C.8.a.ii.

c. The homes that are not Alternate-Loaded Residential Product shall be distributed in groupings throughout a Master Plan or Site Plan.

8. Product Mix.

a. Each Master Plan being developed with Small Residential Lots pursuant to this Section 146-4.2.3.A shall meet the following standards for product mix, using those Lot/Housing Types defined in Subsection b. below.

Table 4.2-7

Required Product Mix in Developments with Small Residential Lots

Developments in R-1 District and

Developments in R-2 and MU-A Districts with 35 Percent or Fewer Small Residential Lots

Number of Dwelling Units

Minimum Number of Lot/Housing Types

Less than 200 dwelling units

No minimum requirement

200-399 dwelling units

2 Lot/Housing Types

400-799 dwelling units

3 Lot/Housing Types

800 or more dwelling units

4 Lot/Housing Types

Developments in R-2 and MU-A Districts with More than 35 Percent Small Residential Lots

Number of Dwelling Units

Minimum Number of Lot/Housing Types

Less than 100 dwelling units

No minimum requirement

100-199 dwelling units

3 Lot/Housing Types

200 or more dwelling units

4 Lot/Housing Types

b. Definition of Lot/Housing Types. For purposes of applying the requirements in Subsection a. above, the following Lot/Housing Types are defined.

Table 4.2-8

Lot/Housing Types for Developments with Small Residential Lots

1.

Dwelling, single-family detached, front loaded with frontage of 70 ft. or more

2.

Dwelling, single-family detached, front loaded with frontage of at least 60 ft. but less than 70 ft.

3.

Dwelling, single-family detached, front loaded with frontage of at least 50 ft. but less than 60 ft.

4.

Dwelling, single-family detached, front loaded with less than 50 ft. of frontage

5.

Dwelling, single-family detached -- alley loaded

6.

Dwelling, single-family Green Court or Motor Court, with at least 35 ft. of frontage

7.

Dwelling, single-family Green Court or Motor Court, with less than 35 ft. of frontage

8.

Dwelling, two-family (duplex)

9.

Dwelling, single-family attached (townhouse)

10.

Dwelling, multifamily

9. Other Standards on Layout and Connectivity Continue to Apply. Except as modified by this Section 146-4.2.3.A, the provisions of Sections 146-4.3.9 (Block Dimensions), 146-4.3.10 (Lot Design and Layout),146-4.3.11(Streets and Alleys), 146-4.3.12 (Sidewalks, Trails, and Bicycle Paths), 146-4.5 (Access and Connectivity), and 146-4.7 (Landscape, Water Conservation, Storm water Management) apply to residential developments under Sections 146-4.2.3.A (Subarea C Small Residential Lot Standards), 146-4.2.3.C (Green Court Dwellings), 146-4.2.3.D (Loop Lane Dwellings) and 146-4.2.3.E (Motor Court Dwellings).

B. Subarea C Flexible Residential Lot Option.

1. Purpose. The purpose of the Flexible Residential Lot Option is to offer additional flexibility for the creation of diverse residential housing types in with supporting non-residential uses in Subarea C, beyond that flexibility provided by Sections 146-4.2.3.A (Subarea C Small Residential Lot Standards), 146-4.2.3.C (Green Court Dwellings), and 146-4.2.3.E (Motor Court Dwellings), by removing minimum lot size standards for residential lots in return for compliance with the standards in this Section 146-4.2.3.B and those purposes and standards in the Subarea C Flexible Residential Lot Handbook.

2. Applicability.

a. In Subarea C, undeveloped land zoned R-1, R-2, or MU-A may be subdivided and developed as described in this Section 146-4.2.3.B (Subarea C Flexible Residential Lot Option), provided the application complies with the following additional standards.

b. The Flexible Residential Lot Option is not available within any Master Plan that has been developed using the standards in Section 146-4.2.3.A (Subarea C Small Residential Lot Standards) or land that has been redesignated by the applicant for development pursuant to the standards for MU-N or MU-C development pursuant to Section 146-5.4.3.I (Administrative Activity Center Designation).

c. If there is a conflict between the standards in this Section 146-4.2.3.B and the lot dimension, size, and layout standards that would otherwise apply in Subsection C the standards in this Section 146-4.2.3.B shall apply.

d. Developments approved pursuant to the E-470 Sustainable Urban Neighborhoods (SUN) standards in effect prior to the Effective Date shall be deemed to have been approved pursuant to this Section 146-4.2.3.B, and shall be deemed to be in compliance with this Section provided development is in compliance with the conditions of the SUN approval.

3. Standards. All development shall comply with the following standards:

a. Contiguous Area and Maximum Density.

i. The Flexible Residential Lot Option area shall include no less than 75 contiguous acres, and no more than 200 contiguous acres.

ii. The overall density of any area approved under the Flexible Residential Lot Option shall not exceed 12 dwelling units per acre.

b. Compliance with Flexible Residential Lot Option Handbook.

i. All development shall comply with all standards and guidelines in the Flexible Residential Lot Handbook to the maximum extent practicable and consistent with the standards in this Section 146-4.2.3.B and this UDO, as determined by the Planning Director. This includes but is not limited to compliance with standards and guidelines related to:

(a) Required mix of land uses;

(b) Required mix of lot types;

(c) Requirements for alley-loaded access to parking areas for some lot types;

(d) Dimensional standards;

(e) The required pattern book for the development; and

(f) Additional standards.

ii. If the Flexible Residential Lot Handbook does not provide an alternative standard, all the development shall comply with the standards otherwise applicable to land located in the underlying R-1, R-2, or MU-A zone district in Subarea C, as applicable, as determined by the Planning Director.

4. Procedure for Approval. Applications for approval under this Section 146-4.2.3.B shall be reviewed under the Master Plan procedure in Section 146-5.4.1.E or the Major Subdivision procedure in Section 146-5.4.2.A, as applicable.

C. Green Court Dwellings.

1. The following standards apply to all Green Court Dwelling developments, regardless of whether they are included in a development containing Small Residential Lots.

a. Purpose. The Green Court option is intended to contribute to a mix of housing types and land uses by permitting more flexible arrangements of buildings and open spaces. Green Court Dwelling developments are an arrangement of single-family residential products around a common open space area intended for use by residents and guests. Typically, Green Court Dwelling lots are smaller than average lots because they share a common space within a higher density format and are oriented perpendicular to a street. Green Court Dwellings and adjacent housing shall demonstrate quality design, provide open space that is accessible and usable by residents, and be designed to encourage resident interaction. Green Court Dwelling developments within a neighborhood should have a variety of home elevations, styles, and Green Court designs. Green Court Dwellings may also be located within blocks that include other nongreen Court housing products. A north-south orientation for Green Court open spaces is also encouraged. The location and design of Green Court Dwellings should not negatively impact street frontage by creating extended lengths of side facing buildings or result in garages or the rear façades of buildings facing a street.

b. Standards. Green Court Dwelling developments shall comply with the following standards.

i. Only single-family detached or attached dwellings are permitted in a Green Court Dwelling development.

ii. The minimum Green Court open space width shall comply with one of the following standards:

(a) A standard Green Court open space must have a minimum width of 30 feet or the height of the tallest residential building facing the Green Court open space, whichever is greater; or

(b) A variable width Green Court open space must have the minimum width described in Subsection b.i above for at least 75 percent of its length, and no portion of the remainder that is fronted by one- or two-story dwelling units is less than 15 feet in width and no portion of the remainder that is fronted by three-story dwelling units is less than 25 feet in width;

Figure 4.2-1: Green Courts

iii. If no more than six dwelling units face the Green Court open space, and none of the dwelling units are more than three stories in height, the Director may approve a maximum of one Green Court open space within each platted block with a minimum width of 20 feet for any portion fronted by one- or two-story dwelling units and a minimum width of 30 feet for any portion that is fronted by three-story dwelling units.

iv. The Green Court open space width is calculated by measuring from the narrowest dimension of front building face to front building face. For the purposes of establishing the minimum Green Court open space width, building height is measured to the highest point of the coping of a flat roof or the deck line of a mansard roof, or to the peak of a gable, pitched or hip roof.

v. In Subareas A and B, no more than 14 dwelling units may face the same Green Court open space.

vi. In Subareas C, no more than 14 dwelling units may face the same Green Court open space, except that the number of units facing a Green Court open space may be increased to 24 dwelling units, if both ends of the Green Court open space have frontage on a public street and the design is approved by the Department of Public Works, Life Safety. The length of the Green Court open space shall not exceed 360 feet in length measured from any public or private street or access drive (refer to graphic below).

vii. Each Green Court Dwelling development shall have direct frontage on and pedestrian access to a street that includes on-street parking and sidewalks on both sides.

viii. Both end units of each group of attached Green Court Dwellings shall abut a public or private street or alley, without intervening common open space between the side wall of the end unit and the right-of-way of the private or public street or alley, except as provided in Subsection ix below.

ix. Green Courts not meeting the standard Subsection viii shall be approved by the Planning Director in the circumstances listed in this Subsection ix:

(a) Perimeter Conditions. Along arterial streets, major utility corridors, major drainage facilities, or other similar facilities that preclude street connectivity; provided, that:

(i) The maximum continuous frontage of Green Courts Dwellings along an arterial or major drainage facility is limited to 700 feet; and

(ii) The continuous frontage of Green Courts Dwellings must be separated from other continuous frontages of Green Courts Dwellings by a pocket park tract of at least 60 feet in width, or by a street connection.

(iii) Not more than two continuous frontages meeting the standards in Subsections i and ii above are allowed on a single perimeter condition that limits street connectivity.

(b) Infill. For infill development and infill development parcels where existing development precludes street connectivity; provided, that:

(i) No more than 25 percent of the groups of attached Green Court Dwellings, or no more than two of the groups of attached Green Court Dwellings, whichever is greater, do not comply with Subsection viii above; or

(ii) Up to three contiguous groups of attached Green Court Dwellings and related Green Court open spaces may not comply with Subsection viii above if they are separated from other groups of attached Green Court Dwellings and related open spaces by another non-Green Court Dwelling land use allowed in Table 3.2-1, or by a street connection.  For the purposes of this Subsection viii, contiguous shall mean sharing a property boundary, alley, or common driveway or other non-buildable parcel.

(c) Additional Standards. All exceptions shall comply with the following standards:

(i) No group of attached Green Court Dwellings may include more than five dwellings on each side of the Green Court open space; and

(ii) In addition to the number of parking spaces required for each Green Court Dwelling by Section 146-4.6 (Parking, Loading, and Stacking), the Green Court development must provide guest parking for motor vehicles at the rate of one-half parking space per Green Court Dwelling. Required guest parking must be located within 200 feet of the front entrance of the dwelling it serves and must be located (a) on a public or private street, or (b) in a parking lot or garage abutting and visible from a public or private street.

x. At least 50 percent of the Green Court open space area shall be landscaped and shall be designed to accommodate foot traffic and play areas. Sidewalks should be located to accommodate pedestrian access while maximizing use of the Green Court open space. Trees are allowed in open areas but should be located along the perimeter and typically be canopy tree species to allow usable space under the tree canopy.

xi. All Green Court Dwellings shall have front entry features (porches or stoops) fronting on a Green Court open space or a street. If porches are provided to meet this requirement, they shall be a minimum 45 square feet in area and a minimum of five feet wide in the narrowest porch dimension. Porches and stoops facing the Green Court open space may extend up to five feet beyond the building façade provided that no roof or associated structure exceeds one story in height.

xii. Above grade utility, cable, telecommunication infrastructure or similar improvements should be located outside of the central Green Court open space area.

xiii. Maintenance and management of common areas shall be provided by a homeowners’ association or other similar entity.

xiv. All standards in Section 146-4.5 (Access and Connectivity) apply to Green Courts Dwellings.

D. Loop Lane Dwellings. Within residential zoning districts, up to 10 single-family dwellings may share access to a public street through the use of a Loop Lane; provided, that the following conditions are met:

1. The surface of the Loop Lane shall be at least 23 feet wide to accommodate two-way vehicle circulation.

2. No portion of the Loop Lane shall extend more than 250 feet from the public street to which it gives access.

3. The common area surrounded by the Loop Lane shall be at least 60 feet wide.

4. Each lot fronting on a noncurved section of the Loop Lane shall have a minimum lot width of 50 feet at the front lot line; each lot fronting on a curved section of the Loop Lane shall have a minimum lot width of 30 feet at the front lot line.

5. The Loop Lane shall be surfaced with concrete. Both the Loop Lane and the common area surrounded by the Loop Lane shall be dedicated to a homeowners’ association with responsibility for maintaining the Loop Lane and the common area. The homeowners’ association shall have the power to enforce payment of dues from individual homeowners in order to maintain the Loop Lane and common area. The homeowners’ association shall be created and the Loop Lane and common area shall be dedicated to the association before a certificate of occupancy shall be issued for any dwelling unit in the Loop Lane Dwelling development.

6. Individual driveways leading from the Loop Lane to each home shall be at least 18 feet long, as measured between the front of the garage or carport and the closest edge of the Loop Lane.

7. The design of the Loop Lane shall permit a passenger vehicle to back out of an individual driveway and turn 90 degrees in either direction without any portion of the vehicle: (a) leaving the individual driveway from which the vehicle is exiting or the Loop Lane, or (b) entering on or over the individual driveways of any other residence. The ASHTO turning template for a "P" design vehicle shall be used to confirm that these standards are met.

8. The Loop Lane Dwelling development shall comply with off-street parking requirements applicable to single-family dwellings and shall provide one guest parking space per dwelling unit with a minimum of one such space located within 125 feet of each dwelling unit. Such parking may be located on the abutting public street, as head-in parking in the common area, or as parallel spaces on individual lots. On-street parking on the Loop Lane shall be prohibited.

9. Each Loop Lane extending longer than 100 feet from the public street shall have a fire hydrant adjacent to the shared driveway at a point determined by the Fire Department.

Figure 4.2-2: Loop Lane

E. Motor Court Dwellings.

1. The following standards apply to all Motor Court Dwelling developments, regardless of whether they are included in a development containing Small Residential Lots.

a. Purpose. Motor-courts are an arrangement of single-family detached housing units on very small lots sharing a common, private access drive. A motor-court is intended to contribute to a mix of housing types and land uses by permitting more flexible arrangements of building and open spaces. Motor-courts include relatively small amounts of outdoor private space, and contiguous groupings of these motor-courts are limited unless mitigated with additional outdoor space.

b. Standards. Motor Court Dwelling developments shall comply with the following standards:

i. This use is noht permitted in the R-3 and R-4 zone districts in Subareas A and B.

ii. Only single-family detached dwelling units are permitted in a Motor Court Dwelling development.

iii. No more than six single-family dwelling units may obtain access from a public street through a shared drivelane in a Motor Court Dwelling development.

iv. The minimum lot size of each lot is 2,500 square feet.

v. The minimum lot width of each lot is 50 feet, as measured at the centerline of the private, shared drivelane.

vi. If four or fewer dwellings obtain access from the shared drivelane, the minimum width of the drivelane is 16 feet, and the drivelane must be posted with “no parking – tow away zone” signs to ensure homeowner access and fire department hose pull activity.

vii. If five or six dwellings obtain access from the shared drivelane, the minimum width of the drivelane is 23 feet.

viii. Dwellings on lots abutting a public or private street shall have front doors facing that street, and any fence between the dwelling and the street shall comply with the requirements of Section 146-4.7.9.L (Fences and Walls in Residential Developments).

ix. All garages shall receive access from the shared drivelane and not onto a private or public street.

x. The front, side and rear setbacks of a Motor Court Dwelling development shall be measured from the outer lot lines of the Motor Court Dwelling development, and shall not apply to individual lots within the development. The front setback shall be the lot line adjacent to the street, rear is opposite the street and sides are perpendicular to the street.

xi. The front setback for homes on lots abutting a public or private street shall be 10 feet for the house and five feet for a porch facing the street. The five foot setback shall be increased if necessary to accommodate utilities, required landscaping, or other City regulations.

xii. For those lots abutting the rear property line, the minimum setback from the rear property line is 10 feet. For those lots abutting the side property lines, the minimum setback from the side property lines is five feet.

xiii. The minimum separation between dwellings is 10 feet, and the minimum separation between garage doors on adjacent dwellings is 30 feet.

xiv. If a wall or fence is provided along the rear property line, the provisions of Section 146-4.7.5.D.8.b shall apply.

xv. Each Motor Court Dwelling development containing five or six dwellings shall include at least two guest parking spaces.

xvi. Motor Courts Dwelling developments shall be organized as shown, and shall comply with the building location, setback, and separation standards shown, on the figure below.

Figure 4.2-3: Motor Courts

F. Accessory Buildings for Residential Uses. The following standards apply to accessory buildings for all residential zone uses unless a different standard is required for a particular type of accessory building by Section 146-3.3 (Use-Specific Standards).

1. Larger than 120 Square Feet. Accessory buildings in residential districts larger than 120 square feet shall:

a. Be constructed within the rear yard only;

b. Not occupy more than 50 percent of the total rear yard;

c. Not exceed 450 square feet or 50 percent of the gross floor area of the principal building, whichever is greater;

d. Not exceed the height of the principal building or 20 feet;

e. Be set back from each side property line a minimum of five feet;

f. Be set back from each rear property line a minimum of:

i. Three feet from each alley;

ii. Five feet from each rear property line;

g. Not be approved if they encroach over an easement on or near a property line, unless the applicant has obtained authorization for such encroachment from the easement holder;

h. Have exterior design, colors, roof pitch, and building materials, similar to the principal building; and

i. Shall not be clad in:

i. Unpainted or galvanized metal or T-1-11, or materials of similar appearance; or

ii. Plywood or materials of similar appearance and durability.

2. Smaller than 120 Square Feet. Buildings that are accessory to residential uses and that are equal to or smaller than 120 square feet in floor area may be placed within the required side and rear setbacks but must be set back a minimum of three feet from all property lines. Accessory buildings meeting this requirement are exempt from the fire safety construction standards of the International Building Code (IBC).

3. Carports and Garages. Carports and private residential garages detached from the principal building requiring a building permit shall:

a. Be constructed within the rear or side yard;

b. Meet the side setback requirements and the rear setbacks required by Subsection 1.f above; and

c. Have exterior materials and colors similar in appearance to the principal building.

G. Accessory Buildings for all Non-residential Primary Uses Except Industrial Uses.

1. An accessory structure shall not be located within a required setback.

2. The height of the accessory structure shall not exceed the height of the primary building on the lot or 24 feet, whichever is less.

3. Accessory buildings shall be screened from private common space, public rights-of-way, parks, open spaces, and residential uses by landscaping, berms, and/or architecturally compatible walls that comply with the standards in Section 146-4.7 (Landscape, Water Conservation, Storm water Management).

4. In a Mixed-Use district accessory buildings shall be constructed with materials and building forms similar to the primary building on the site.

5. In a Special Purpose district accessory buildings shall be constructed with materials and building forms compatible with the surrounding non-residential area.

6. Accessory buildings for agricultural uses shall:

a. Be constructed within the rear or side yard;

b. Meet the side and rear setback requirements in paragraph 1.e above;

c. Not exceed 25 percent of the lot area;

d. Have exterior design, colors, roof pitch, and building materials similar to the principal building; and

e. Shall not be clad in:

i. Unpainted or galvanized metal or T-1-11, or materials of similar appearance; or

ii. Plywood or materials of similar appearance and durability.

H. Accessory Buildings for Industrial Uses. All buildings on a lot containing a primary use listed in Table 3.2-1 as an industrial use are considered principal buildings, and shall meet all standards applicable to principal buildings.

I. Sight Triangle Required.

1. Sight Triangle Area. The sight triangle distance for street intersections is defined in the Aurora Roadway Design and Construction Specifications Manual.

2. Obstruction Prohibited. No person shall place or maintain any structures, fences, landscaping, or any other objects within any sight triangle that obscures sight visibility above the sight triangle area for more than six horizontal inches between a height of 26 inches and 96 inches above the roadway surface. Trees with an expected mature Diameter at Breast Height (DBH) of six inches or less may be planted and maintained within the sight triangle area if all branches are trimmed to maintain a clear vision for a vertical height of 96 inches above the roadway surface.

Figure 4.2-4: Visibility in Sight Triangle

J. Reverse Setbacks from Oil and Gas Facility. The minimum setback for a residential use from an oil or gas facility, measured from the lot line of the residential lot shall be 150 feet provided a sign is not less than four square feet in area is posted at the line of a lot that is within 350 feet of an oil and gas facility that states: “THERE IS AN OIL AND GAS FACILITY WITHIN 350 FEET OF THIS LOT.” (Ord. No. 2022-17 § 7, 04-25-2022; Ord. No. 2020-37 § 14, 10-05-2020; Ord. No. 2019-49 § 1, 08-19-2019)