SEC. 180. NONCONFORMING USES, NONCOMPLYING STRUCTURES AND SUBSTANDARD LOTS OF RECORD:…
San Francisco County Zoning Code · 2026-06 edition · updated 2026-07-25 · San Francisco County
(See Interpretations related to this Section.)
The following provisions shall apply to nonconforming uses, noncomplying structures and substandard lots of record:
(a) Definitions. Such uses, structures and lots are hereby defined as follows:
(1) A "nonconforming use" is a use which existed lawfully at the effective date of this Code, or of amendments thereto, or a live/work unit which existed on the effective date of Ordinance No. 412-88 (effective October 10, 1988) (other than a live/work unit wholly or partly occupying space whose legal occupancy under the Building Code was then limited to a residential occupancy) and which fails to conform to one or more of the use limitations under Articles 2, 6, 7 and 8 of this Code that then became applicable for the district in which the property is located.
(2) A "noncomplying structure" is a structure which existed lawfully at the effective date of this Code, or of amendments thereto, and which fails to comply with one or more of the regulations for structures, including requirements for off-street parking and loading, under Articles 1.2, 1.5, 2.5, 6, 7 and 8 of this Code, that then became applicable to the property on which the structure is located.
(3) A "substandard lot of record" is a lot which existed lawfully at the effective date of any requirement of this Code applicable thereto for minimum lot width or area (on December 26, 1946, or through subsequent amendments), and which fails to meet one or more of such requirements. Any lot existing and recorded as a separate parcel in the office of the Assessor or the Recorder at such effective date shall be deemed to be a lot of record under this Code as of such date. Any lot created by merger of such existing lots of record or parts thereof in such a manner as to establish a lesser number of lots, each having an increased area with no reduction in width, or an increased width with no reduction in area, or both an increased area and an increased width, shall also be deemed to be a lot of record under this Code as of the date of such
merger.
(b) Timely Compliance with the Code. Such uses, structures and lots, in failing to meet applicable requirements of this Code, are incompatible with the purposes of this Code and with other uses, structures and lots in the City, and it is intended that these uses, structures and lots shall be brought into compliance with this Code as quickly as the fair interests of the parties will permit.
(c) Continuation of Nonconforming Uses, Structures, and Lots. Notwithstanding any other provision of this Code, such uses, structures and lots may be continued, except as otherwise provided in Sections 180 through 189, and subject to the limitations of this Article 1.7.
(d) Change in Ownership. A mere change of title or possession or right of possession of property, without any other change that is relevant to the restrictions of this Code, shall not terminate the status of a nonconforming use, noncomplying structure or substandard lot of record.
(e) Lawfully Existing Structures and Uses. Any structure or use for which a permit was lawfully granted prior to May 2, 1960, pursuant to the Planning Code provisions in effect on that date, and which was thereafter commenced and completed in accordance with such provisions, shall be deemed to have been a lawfully existing structure or use on that date. Any structure or use for which a permit has been lawfully granted pursuant to the provisions of this Code relating to amendments, and which has thereafter been commenced and completed in accordance with such provisions, shall be deemed to be a lawfully existing structure or use at the time of the amendment that causes it to become a noncomplying structure or a nonconforming use.
(f) Compliance with Other Requirements of the Planning Code. Except as specifically provided in this Code to the contrary, every nonconforming use, noncomplying structure and substandard lot of record shall comply with the applicable requirements of this Code, other than those requirements from which such uses, structures and lots are exempted by this Section 180.
(g) Nonconforming Signs. Section 606(c) and other provisions of Article 6 of this Code shall regulate the signs permitted for nonconforming uses. In addition, signs which are themselves classified as nonconforming uses and noncomplying structures under this Code shall be governed by Section 604 and other provisions of Article 6 of this Code. (h) Preserving Dwelling Units. If the administrative record regarding a nonconforming unit does not provide conclusive evidence that the unit is illegal, it shall be presumed to be a legal nonconforming unit.
(Added by Ord. 443-78, App. 10/6/78; amended by Ord. 69-87, App. 3/13/87; Ord. 412-88, App. 9/10/88; Ord. 115-90, App. 4/6/90; Ord. 287-13 , File No. 130041, App. 12/26/2013, Eff. 1/25/2014) AMENDMENT HISTORY
Division headers added throughout section; division (h) added; Ord. 287-13 , Eff. 1/25/2014.
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Ask AI about this code▸ Contents — San Francisco County Zoning Code
- SEC. 101. PURPOSES.
- SEC. 102. DEFINITIONS.
- SEC. 103. HOUSING BALANCE MONITORING AND REPORTING.
- SEC. 105. ZONING MAP.
- SEC. 106. ZONING MAP INCORPORATED HEREIN.
- SEC. 108. NEW NAMES.
- SEC. 109. SEVERABILITY.
- SEC. 121. MINIMUM LOT WIDTH AND AREA.
- SEC. 122. HEIGHT AND BULK LIMITATIONS.
- SEC. 123. MAXIMUM FLOOR AREA RATIO.
- SEC. 124. BASIC FLOOR AREA RATIO.
- SEC. 125. FLOOR AREA PREMIUMS, DISTRICTS OTHER THAN NC, C-3 AN…
- SEC. 127. TRANSFER OF PERMITTED BASIC GROSS FLOOR AREA.
- SEC. 128. TRANSFER OF DEVELOPMENT RIGHTS IN C-3 DISTRICTS.
- SEC. 130. YARD AND SETBACK REQUIREMENTS, GENERAL.
- SEC. 131. LEGISLATED SETBACK LINES.
- SEC. 132. FRONT SETBACK AREAS IN RTO, RH, AND RM DISTRICTS AND…
- SEC. 133. SIDE YARDS, RH-1(D) DISTRICTS.
- SEC. 134. REAR YARDS IN R, RC, RTO, NC, M, CMUO, MUG, MUO, MUR…
- SEC. 135. USABLE OPEN SPACE FOR DWELLING UNITS AND GROUP HOUSI…
- SEC. 136. OBSTRUCTIONS OVER STREETS AND ALLEYS AND IN REQUIRED…
- SEC. 137. MODIFICATION OF CERTAIN PLAZAS, ARCADES, AND SIDEWAL…
- SEC. 138. PRIVATELY-OWNED PUBLIC OPEN SPACE (POPOS) REQUIREMEN…
- SEC. 139. STANDARDS FOR BIRD-SAFE BUILDINGS.
- SEC. 140. ALL DWELLING UNITS IN ALL USE DISTRICTS TO FACE ON A…
- SEC. 141. SCREENING OF ROOFTOP FEATURES IN R, NC, C, M, WMUG, …
- SEC. 142. SCREENING AND GREENING OF PARKING AND VEHICULAR USE …
- SEC. 143. RESERVED.
- SEC. 144. STREET FRONTAGES IN RH, RTO, AND RM DISTRICTS.
- SEC. 145. FRONTAGES, OUTDOOR ACTIVITY AREAS, WALKUP FACILITIES…
- SEC. 146. SUNLIGHT ACCESS TO PUBLIC SIDEWALKS IN C-3 DISTRICTS.
- SEC. 147. REDUCTION OF SHADOWS ON CERTAIN PUBLIC OR PUBLICLY A…
- SEC. 148. REDUCTION OF GROUND-LEVEL WIND CURRENTS FOR BUILDING…
- SEC. 149. [REDESIGNATED.]
- SEC. 149. BETTER ROOFS; LIVING ROOF ALTERNATIVE.
- SEC. 150. OFF-STREET LOADING REQUIREMENTS.
- SEC. 151. [REPEALED.]
- SEC. 152. SCHEDULE OF REQUIRED OFF-STREET FREIGHT LOADING SPAC…
- SEC. 153. RULES FOR CALCULATION OF PARKING SPACES.
- SEC. 154. DIMENSIONS FOR OFF- STREET PARKING, FREIGHT LOADING,…
- SEC. 155. GENERAL STANDARDS AS TO LOCATION AND ARRANGEMENT OF …
- SEC. 156. PARKING LOTS.
- SEC. 157.1. [REPEALED.]
- SEC. 158. [REPEALED.]
- SEC. 159. [REPEALED.]
- SEC. 161. EXEMPTIONS AND EXCEPTIONS FROM OFF-STREET PARKING, F…
- SEC. 162. TOUR BUS LOADING SPACES IN C-3 DISTRICTS.
- SEC. 163. TRANSPORTATION MANAGEMENT PROGRAMS AND TRANSPORTATIO…
- SEC. 164. SAN FRANCISCO RESIDENT PLACEMENT AND TRAINING PROGRAM.
- SEC. 165. CHILD-CARE PLANS AND CHILD-CARE BROKERAGE SERVICES I…
- SEC. 166. CAR SHARING.
- SEC. 167. PARKING COSTS SEPARATED FROM HOUSING COSTS IN NEW RE…
- SEC. 169. TRANSPORTATION DEMAND MANAGEMENT PROGRAM.
- SEC. 170. APPLICABILITY OF REQUIREMENTS.
- SEC. 171. COMPLIANCE OF USES REQUIRED.
- SEC. 172. COMPLIANCE OF STRUCTURES, OPEN SPACES, AND OFF-STREE…
- SEC. 173. COMPLIANCE OF LOTS REQUIRED.
- SEC. 174. COMPLIANCE WITH CONDITIONS, STIPULATIONS AND SPECIAL…
- SEC. 175. APPROVAL OF PERMITS OR DEVELOPMENT APPLICATIONS.
- SEC. 176. ENFORCEMENT AGAINST VIOLATIONS.
- SEC. 177. LEGITIMIZATION OF CERTAIN MASSAGE ESTABLISHMENTS.
- SEC. 178. CONDITIONAL USES.
- SEC. 179. USES LOCATED IN NEIGHBORHOOD COMMERCIAL DISTRICTS.
- SEC. 180. NONCONFORMING USES, NONCOMPLYING STRUCTURES AND SUBS…
- SEC. 181. NONCONFORMING USES: ENLARGEMENTS, ALTERATIONS AND RE…
- SEC. 182. NONCONFORMING USES: CHANGES OF USE.
- SEC. 183. NONCONFORMING USES: DISCONTINUANCE AND ABANDONMENT.
- SEC. 184. SHORT-TERM CONTINUANCE OF CERTAIN NONCONFORMING USES.
- SEC. 185. CONTINUANCE OF OTHER NONCONFORMING USES.
- SEC. 186. EXEMPTION OF LIMITED COMMERCIAL AND INDUSTRIAL NONCO…
- SEC. 187. AUDIT PROPERTIES; AMNESTY PROGRAM.
- SEC. 188. NONCOMPLYING STRUCTURES: ENLARGEMENTS, ALTERATIONS, …
- SEC. 189. SUBSTANDARD LOTS OF RECORD: CONSTRUCTION AND OTHER A…
- SEC. 190. CONVERSION OF MEDICAL CANNABIS DISPENSARIES TO CANNA…
- SEC. 191. AUTHORIZATION OF TEMPORARY CANNABIS RETAIL USES.
- SEC. 192. LEGITIMIZATION OF CERTAIN LAND USES AT 3150 18TH STR…
- SEC. 193. CONTINUATION OF LONGSTANDING PLACES OF ENTERTAINMENT.
- SEC. 201. CLASSES OF USE DISTRICTS.
- SEC. 202. PERMITTED BY THIS CODE.
- SEC. 203. EFFECT ON CERTAIN PUBLIC SERVICES.
- SEC. 204. ACCESSORY USES, GENERAL.
- SEC. 205. TEMPORARY USES, GENERAL.
- SEC. 206. THE AFFORDABLE HOUSING AND EDUCATOR HOUSING PROGRAMS.
- SEC. 207. DWELLING UNIT DENSITY LIMITS.
- SEC. 208. DENSITY LIMITATIONS FOR GROUP HOUSING OR HOMELESS SH…
- SEC. 209. DESCRIPTION AND PURPOSE OF RESIDENTIAL AND RESIDENTI…
- SEC. 210. DESCRIPTION AND PURPOSE OF COMMERCIAL, INDUSTRIAL, A…
- SEC. 211. P (PUBLIC) DISTRICTS.
- SEC. 212. [REPEALED.]
- SEC. 213. [REPEALED.]
- SEC. 215. [REPEALED.]
- SEC. 216. [REPEALED.]
- SEC. 217. [REPEALED.]
- SEC. 218. [REPEALED.]
- SEC. 219. [REPEALED.]
- SEC. 220. [REPEALED.]
- SEC. 221. [REPEALED.]
- SEC. 222. [REPEALED.]
- SEC. 223. [REPEALED.]
- SEC. 224. [REPEALED.]
- SEC. 225. [REPEALED.]
- SEC. 226. [REPEALED.]
- SEC. 227. [REPEALED.]
- SEC. 228. [REDESIGNATED.]
- SEC. 229. [REDESIGNATED.]
- SEC. 230. [REDESIGNATED.]
- SEC. 231. LIMITED CORNER COMMERCIAL USES IN RH, RTO-1, RTO-M, …
- SEC. 233. [REDESIGNATED.]
- SEC. 234. [REDESIGNATED.]
- SEC. 235. SPECIAL USE DISTRICTS.
- SEC. 236. [REPEALED.]
- SEC. 237. AUTOMOTIVE SPECIAL USE DISTRICT.
- SEC. 238. NOB HILL SPECIAL USE DISTRICT.
- SEC. 239. WASHINGTON-BROADWAY SPECIAL USE DISTRICT.
- SEC. 240. WATERFRONT SPECIAL USE DISTRICT.
- SEC. 241. DOLORES HEIGHTS SPECIAL USE DISTRICT.
- SEC. 242. BERNAL HEIGHTS SPECIAL USE DISTRICT.
- SEC. 243. VAN NESS SPECIAL USE DISTRICT.
- SEC. 244. RESIDENTIAL CHARACTER DISTRICTS.
- SEC. 247. DOWNTOWN SUPPORT OPEN SPACE DEMONSTRATION SPECIAL US…
- SEC. 249.1. FOLSOM AND MAIN RESIDENTIAL/COMMERCIAL SPECIAL USE…
- SEC. 249.2. THE VILLAGE SPECIAL USE DISTRICT.
- SEC. 249.3. OCEANVIEW LARGE RESIDENCE SPECIAL USE DISTRICT.
- SEC. 249.4. ALEXANDRIA THEATER SPECIAL USE DISTRICT.
- SEC. 249.5. NORTH OF MARKET RESIDENTIAL SPECIAL USE DISTRICT.
- Article 6
- Part I
- Part II
- Part III
- Part IV
- Part V
- Part VI
- Part VII
- Part VIII
- Part IX
- Part X
- Part XI
- Part XII
- Part XIII
- Part XIV
- Part XV
- Part XVI