Chapter 5 Form District Regulations Part 4 Residential Site Design Standards Page3 of 3

  1. Multi-Frontage Lots

    Lots with more than one street frontage and not a corner lot shall use the primary street for the calculation of the public realm area. For situations where a primary street cannot be determined, the planning director or designee may choose the street that functions as the primary street. The secondary street shall be used for the location of the rear yard and accessory structure area.
  2. Multi-family development.
    1. Noninfill Context: Multi-family developments that do not maintain the four areas of the traditional neighborhood site design pattern may use alternative site designs that meet the following:
      1. Front setback/build-to lines meet requirements in Table 5.2.2;
      2. Parking is in the rear of the lot, takes access from the alley if there is an alley, and is screened from the street by a building or street wall; and
      3. The site plan complies with the standards of Section 5.12.4.
    2. INFILL CONTEXT
      1. Multi-family residential development shall be subject to the four areas of traditional neighborhood residential development with the following exceptions:
        1. The accessory structure size limitation shall not apply
        2. The accessory structure area depth maximum shall not apply.
    3. Parking areas or detached garages for all multi-family buildings may not be located between the front façade of the building and the primary street. Attached and detached garages for multi-family buildings shall be located to the side or rear of the principal building, and the garage doors shall not be on the front façade. Garages may also be located under the multi-family structure; garage doors on the front façade are permissible if the top of the door is at or below the mean elevation of the established grade of abutting public right-of-way.



  3. Traditional Neighborhood Design Alternative

    The Planning Commission may approve an alternative site design pattern for developments creating three or more contiguous residential structures. Sites developed under this Traditional Neighborhood Design Alternative shall not be subject to the standards established in Paragraphs A through E of this Section. The applicant shall submit a detailed site plan and written justification for any divergence from the standards otherwise applicable in the traditional form districts. The site plan shall indicate the location of all proposed structures or buildable areas, yards and open spaces, as well as parking areas and driveways. The justification shall demonstrate how the proposed plan is compatible with adjacent development, and fulfills applicable provisions of Cornerstone 2020.

5.4.2 Suburban Form Districts

  1. General Standards
    1. Residences served by alleys constructed with a minimum paved width of 18 feet shall not have curb cuts from the primary street serving the lot.
    2. A single family residence (principal structure) may extend into the required rear yard as established in the applicable zoning district, provided that such structure meets the following criteria:
      1. The residence may occupy no more than 30% of the required rear yard; and
      2. For purposes of this section, an open, unenclosed deck located at the first floor elevation of the house shall not be considered an encroachment in the required rear yard, provided that the setbacks established in Part 11 are maintained.
      3. The cumulative total area of building footprint, including accessory structure(s) and residence, shall not exceed 50% of the area of the required rear yard.
    3. Alternative Development Standards. Sites developed in accordance with the Alternative Development Incentives regulations (Chapter 4 Part 5) or the Planned Residential District (Section 2.7.3) shall meet the lot and setback dimension standards of Section 5.3.1.D. instead of the requirements established in Table 5.3.
    4. Where permitted by applicable form district and zoning district standards, multi-family residential structures in excess of 2 stories shall be permitted provided that the three-story or taller portion of any building shall be setback a minimum of 50 feet from abutting detached single family residential development.
  2. Non-Infill Context
    1. New single family major subdivisions having frontage on roadways classified as collectors or arterials shall meet one of the following standards:
      1. A frontage road or alley shall be provided to serve lots adjacent to the collector or arterial, and houses shall be designed to face the collector or arterial. Privacy fences are not permitted between the front façade and the right-of-way of the collector or arterial; or
      2. A 20 foot landscape buffer area, in addition to the front yard or street side requirement in Table 5.3.1, shall be provided for building lots adjoining the right-of-way. The landscape buffer area shall include a berm, hedge, fence or wall adequate to form an effective visual screen at least six feet in height. At least 50% of the surface area of wooden privacy fences shall be screened from the roadway by evergreen vegetation. The landscape buffer area shall be maintained by a community or property owners association rather than individual lot owners. A landscape plan for the buffer area shall be submitted for review and approval by DPDS staff.
  3. Infill Context

    Where 50% or more of either the lots or street frontage (lineal distance) within 200 feet of the subject site and on the same side of the street are occupied by principal structures, the following requirements apply instead of applicable standards in Tables 5.3.1 and 5.3.2.
    1. Construction of new or expanded principal residential structure on lots created prior to the effective date of this regulation, or on parcels created by minor plat after the effective date, shall fall within the range of the front setbacks of the two nearest principal residential structures. The side setback shall fall within the range of the two nearest principal residential structures or three (3) feet, whichever is greater. The minimum street side yard setback shall be that of the nearest principal residential structure (accessory structures are excluded from this provision).
    2. New lots in an Infill Context shall not be less than 80% of the established lot pattern (average lot width and depth) and shall comply with the minimum lot size of the applicable zoning and form districts.
    3. The Infill Site Context standards shall not apply if two properties within 200 feet of the subject site and on the same side of the street is developed at a density less than one dwelling per acre.
    4. Single Family Residential Tree Requirement
      1. Construction of a new single family or duplex principal structure on a residential lot shall provide at least one Type ‘A’ or two Type ‘B” trees on the lot. Preservation of existing trees that meet the required tree type shall fulfill this requirement. Street trees do not fulfill this requirement.
  4. Accessory Structures
    1. Maximum Size - The maximum building footprint for an accessory structures for single family residential buildings shall not exceed the footprint of the principal structure. Accessory structures with building footprints greater than the footprint of the principal structure may be permitted in accordance with Section 4.3.6. Multiple accessory structures are allowed, subject to the limits established in paragraph 3.b, below.
    2. Structures/Uses in a Required Front Yard and Street-Side Yards – Accessory structures for residential buildings other than permitted fences shall not be constructed within a required front yard setback shown in Table 5.3.1. However, open, unenclosed porches are permitted to encroach into a front yard setback for a maximum distance of 10 feet. Awnings may extend 48 inches into the front yard setback. Porches and awnings must be constructed as extensions of the principal structure and shall not be freestanding.
    3. Accessory Structures/Uses in a Required Rear or Side Yard – Accessory structures and uses for residential buildings may be permitted in a required side or rear yard setback when the following standards are met:.
      1. The minimum setback from a rear property line shall be 5 feet. The minimum setback from side property lines shall be 2 feet except that accessory structures and uses shall observe the same setback from street side property lines as required for principal structures. Parking areas shall be at least 5 feet from the required rear property line. Parking is permitted within required side yards.
      2. The cumulative total area of building footprint, accessory structure(s) and residence, shall not encroach more than 50% of the area of the rear yard. No structure shall be closer than five (5) feet to the rear property line.