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SEC. 125. FLOOR AREA PREMIUMS, DISTRICTS OTHER THAN NC, C-3 AND MIXED USE. In any district other than an NC, C-3, or Mixed Use District in which a floor area ratio limit applies, the following premiums, where applicable, may be added to the basic floor area ratio limit to determine the maximum floor area ratio for a building or development: (a) For a lot or portion thereof which is defined by this Code as a corner lot, a floor area premium may be added by increasing the area of the lot or portion, for purposes of floor area computation, by 25 percent;

(b) For a lot or portion thereof which is defined by this Code as an interior lot, and which abuts along its rear lot line upon a street or alley, a floor area premium may be added by increasing the depth of the lot or portion along such street or alley, for purposes of floor area ratio computation, by one-half the width of such street or alley or 10 feet, whichever is the lesser. (Amended by Ord. 443-78, App. 10/6/78; Ord. 69-87, App. 3/13/87; Ord. 131-87, App. 4/24/87) SEC. 127. TRANSFER OF PERMITTED BASIC GROSS FLOOR AREA. (a) When Allowed. The maximum permitted Gross Floor Area for any building or development on a lot may be increased by transfer to such lot of basic Gross Floor Area that is permitted in the Zoning Control Table for the district in which the lot is located but unbuilt upon an adjacent lot that is occupied by an historical, architectural or aesthetic landmark that has been so designated by the Board of Supervisors pursuant to Article 10 of this Code. For the purposes of this Section, an "adjacent lot" is one that either abuts for a distance not less than 25 feet along a side or rear lot line of the lot to which the basic gross floor area transfer is made (hereinafter referred to as the "transferee lot"), or would so abut for such a distance if not separated solely by a street or an alley. (b) Amount of TDR Available for Transfer. The maximum TDR available for transfer from a Transfer Lot consists of the difference between (1) the allowable gross floor area permitted on the Transfer Lot by Section 124 and (2) the gross floor area of the development located on the Transfer Lot. (c) Eligibility of Development Lots and Limitation on Use of TDR on Development Lots. TDR may be used to increase the allowable Gross Floor Area of a development on a Development Lot if the following requirements and restrictions are satisfied: (1) Transfer of Development Rights shall be limited to the following: (A) The Transfer Lot and the Development Lot are located in a C-3 Zoning District; or (B) the Transfer Lot contains a Significant building and is located in the South of Market Extended Preservation District, as set forth in Section 819, and the Development Lot is located in a C-3 District; or (C) the Transfer Lot is in a P District adjacent to a C-3 District and meets the requirements established in subsection (a)(4) above and the Development Lot is located in a C-3 District; or (D) the Transfer Lot is located in any C-3 District and contains an individual landmark designated pursuant to Article 10 and the Development Lot is located in any C-3 District. (2) TDR may not be transferred for use on any lot on which is or has been located a Significant or Contributory building; provided that this restriction shall not apply if the designation of a building is changed to Unrated; nor shall it apply if the Historic Preservation Commission finds that the additional space resulting from the transfer of TDR is essential to make economically feasible the reinforcement of a Significant or Contributory building to meet the standards for seismic loads and forces of the Building Code, in which case TDR may be transferred for that purpose subject to the limitations of this Section and Article 11, including Section 1111.6. Any alteration shall be governed by the requirements of Sections 1111 to 1111.6. (3) Notwithstanding any other provision of this Section, development on a Development Lot is limited by the provisions of this Code, other than those on floor area ratio, governing the approval of projects, including the requirements relating to height, bulk, setback, sunlight access, and separation between towers, and any limitations imposed pursuant to Section 309 review applicable to the Development Lot. The total allowable gross floor area of a development on a Development Lot may not exceed the limitation imposed by Section 123(c). (d) Limitations. No transfer of permitted gross floor area shall serve to increase the total gross floor area permitted under this Code on the adjacent lot and the transferee lot taken together, either presently or prospectively. No building permit application shall be approved by the Planning Department at any time, nor shall any building permit be issued by any City department at any time, if the result of such approval or issuance would be to increase the total permitted Gross Floor Area of both such lots taken together above such total as calculated on the basis of the floor area ratio limits prevailing at that time for such lots. (e) Completed Transfers. Any transfer of permitted Gross Floor Area completed prior to the effective date of this Section shall be effective notwithstanding the location of the transferee lot outside the C-3-O District and notwithstanding the aggregate transfer of more than ½ the gross floor area permitted on the adjacent lot under the basic floor area ratio limit, provided all other conditions of this Section have been met. (f) Restrictions on Transfer. Any restrictions or limitations imposed upon any lot by virtue of the transfer of Gross Floor Area permitted by this Section shall remain in effect notwithstanding an amendment of this Section which removes authorization for such a transfer. (Amended by Ord. 414-85, App. 9/17/85; Ord. 22-15, File No. 141253, App. 2/20/2015, Eff. 3/22/2015) AMENDMENT HISTORY Divisions (a) and (f) amended; Ord. 22-15, Eff. 3/22/2015. SEC. 128. TRANSFER OF DEVELOPMENT RIGHTS IN C-3 DISTRICTS. (a) Definitions. (1) "Development Lot." A lot to which TDR may be transferred to increase the allowable gross floor area of development thereon beyond that otherwise permitted by the Zoning Control Table for the district in which the lot is located. (2) "Owner of Record." The owner or owners of record in fee. (3) "Preservation Lot." A parcel of land on which is either (A) a Significant or Contributory building (as designated pursuant to Article 11); or (B) a Category V Building that has complied with the eligibility requirement for transfer of TDR as set forth in Section 1109(c); or (C) a structure designated an individual landmark pursuant to Article 10 of this Code. The boundaries of the Preservation Lot shall be the boundaries of the Assessor's lot on which the building is located at the time the ordinance or, as to Section 1109(c), resolution, making the designation is adopted, unless boundaries are otherwise specified in the ordinance. (4) "Transfer Lot." A Preservation Lot located in a C-3 District from which TDR may be transferred. A lot zoned P (public) may in no event be a Transfer Lot unless a building on that lot is (A) owned by the City and County of San Francisco; and (B) located in a P District adjacent to a C-3 District; and (C) designated as an individual landmark pursuant to Article 10 of this Code, designated as a Category I Significant Building pursuant to Article 11 of this Code, or listed on the National Register of Historic Places; and (D) the TDR proceeds are used to finance, in whole or in part, a project to rehabilitate and restore the building in accordance with the Secretary of Interior standards. For the purposes of Section 128(b), a lot zoned P that satisfies the criteria of this Subsection (4) to qualify as a "Transfer Lot" shall be deemed to have an allowable gross floor area of 7.5:1 under Section 124. (5) "Transferable Development Rights (TDR)." Units of gross floor area that may be transferred, pursuant to the provisions of this Section and Article 11 of this Code, from a Transfer Lot to increase the allowable gross floor area of a development on a Development Lot. (6) "Unit of TDR." One unit of TDR is one square foot of gross floor area. (b) Amount of TDR Available for Transfer. The maximum TDR available for transfer from a Transfer Lot consists of the difference between (1) the allowable Gross Floor Area permitted on the Transfer Lot by the Zoning Control Table for the district in which the lot is located; and (2) the Gross Floor Area of the development located on the Transfer Lot. (c) Eligibility of Development Lots and Limitation on Use of TDR on Development Lots. TDR may be used to increase the allowable gross floor area of a development on a Development Lot if the following requirements and restrictions are satisfied: (1) Transfer of Development Rights shall be limited to the following: (A) The Transfer Lot and the Development Lot are located in a C-3 Zoning District; or (B) the Transfer Lot contains a Significant building and is located in the South of Market Extended Preservation District, as set forth in Section 819, and the Development Lot is located in a C-3 District; or