San Francisco County Municipal Code § 209.3 Rc (residential

(See Interpretations related to this Section.) These Districts are intended to recognize, protect, conserve, and enhance areas characterized by structures combining Residential uses with neighborhood-serving Commercial uses. The predominant Residential uses are preserved, while provision is made for supporting Commercial uses that meet the frequent needs of nearby residents without generating excessive vehicular traffic. The compact, walkable, transit-oriented and mixed-use nature of these Districts is recognized by no off-street parking requirements. The RC Districts are composed of two separate districts, as follows: RC-3 Districts. These Districts provide for Residential Uses, with supporting Commercial Uses. Open spaces are required for Dwellings in the same manner as in RM-3 Districts, except that rear yards need not be at ground level and front setback areas are not required. RC-4 Districts. These Districts provide for Residential Uses, with supporting Commercial uses. Open spaces are required for Dwellings in the same manner as in RM-4 Districts, except that rear yards need not be at ground level and front setback areas are not required.

Table 209.3 ZONING CONTROL TABLE FOR RESIDENTIAL-COMMERCIAL DISTRICTS Zoning Category § References RC-3 RC-4 Zoning Category § References RC-3 RC-4 BUILDING STANDARDS Massing and Setbacks Height and Bulk Limits §§ 102, 105, 106, 122, 250-252, 260 , 261.1, 263.19, 270, 270.3, 271 Varies. See Height and Bulk Maps. Height sculpting on Alleys per § 261.1. Front and Side Yard Setback §§ 130, 132, 133 Not Required. Rear Yard §§ 130, 134 Required at first residential level and above. 25% of the lot depth, but in no case less than 15 feet. Design Guidelines and Standards § 311 Subject to the Residential Design Guidelines and Citywide Design Standards and any other design guidelines that have been approved by the Planning Commission may also apply. Street Frontage and Public Realm Streetscape and Pedestrian Improvements (Street Trees) § 138.1 Required. Street Frontage Requirements § 145.1 Required as specified in Section § 145.1. Street Frontage, Parking and Loading Access Restrictions § 155(r) As specified in § 155(r). As specified in § 155(r). Miscellaneous Planned Unit Development § 304 C C Awning, Canopy and Marquee § 136.1 P P Signs § 607.1 Per § 607.1. Per § 607.1. Housing Choice-SF § 206.10 Form-based density, additional height, and other zoning modifications for eligible projects in the R-4 Height and Bulk District. RESIDENTIAL STANDARDS AND USES Development Standards Usable Open Space [Per Dwelling Unit] §§ 135, 136 At least 60 square feet if private, and 80 square feet per Dwelling Unit if common. At least 36 square feet if private, and 48 square feet per Dwelling Unit if common. Parking Requirements § 151.1 None Required. Up to one space for every two units permitted, and up to three spaces for every four units permitted with Conditional Use per § 151.1. Residential Conversion, Demolition, or Merger of Dwelling Units, including Residential Flats § 317 C Use Characteristics Intermediate Length Occupancy §§102, 202.10 P(11) P(11) Single Room Occupancy § 102 P P Student Housing § 102 P P Residential Uses Dwelling Unit Density, General (7) (13) § 207 Form-Based Density applies within the R-4 Height and Bulk District (§ 263.19). Outside the R-4 Height and Bulk District, total maximum permitted density is one unit per 400 square feet of lot area. Form-Based Density applies within the R-4 Height and Bulk District (§ 263.19). Outside the R-4 Height and Bulk District, total maximum permitted density is one unit per 200 square feet of lot area. No density limits in the Van Ness SUD (§ 243). (8) Minimum Dwelling Unit Densities § 207.9 Varies depending on project location, but generally ranges between 50 and 100 dwelling units per acre. Maximum Dwelling Unit Size §§ 207.10, 317 P up to 4,000 square feet of Gross Floor Area or an equivalent Floor Area Ratio for any individual Dwelling Unit of 1.2:1. C for Dwelling Units that exceed the greater of those thresholds.

Senior Housing Density §§ 102, 202.2(f) , 207 Form-Based Density applies within the R-4 Height and Bulk District (§ 263.19). Outside the R-4 Height and Bulk District, P up to twice the number of dwelling units otherwise permitted as a principal use in the district and meeting all the requirements of § 202.2(f)(1). C up to twice the number of dwelling units otherwise permitted as a principal use in the district and meeting all requirements of § 202.2(f)(1), except for § 202.2(f)(1)( D)(iv), related to location. Group Housing Density § 208 Form-Based Density applies within the R-4 Height and Bulk District (§ 263.19). Outside the R-4 Height and Bulk District, P up to one bedroom for every 140 square feet of lot area. (9) Form-Based Density applies within the R-4 Height and Bulk District (§ 263.19). Outside the R-4 Height and Bulk District, P up to one bedroom for every 70 square feet of lot area. (9) Homeless Shelter §§ 102, 208 P P NON-RESIDENTIAL STANDARDS AND USES Development Standards Floor Area Ratio §§ 102, 123, 124 , 207.9 3.6 to 1. For Office Uses minimum intensities may apply pursuant to § 207.9. 4.8 to 1. Other FAR controls apply in the Van Ness SUD; § 243(c)(1). For Office Uses minimum intensities may apply pursuant to § 207.9. Off-Street Parking § 151.1 None Required. Up to one space for every two units permitted, and up to 3 spaces for every four units permitted with Conditional Use per § 151.1. Use Size §§ 102, 121.5, 121.6 P if up to 6,000 square feet; C if 6,001 square feet or above. Division of large use sizes per