San Francisco County Municipal Code Ch. 11 Additions
San Francisco County Municipal Code · 2026-09 edition · updated 2026-10-04 · San Francisco County
Cite as: San Francisco County Municipal Code Chapter 11 · Text as of 2026-10-04
1102 Add the following sections: 1102.1.1 High-rise buildings. Any existing building or structure to which an addition is made which causes the building or structure to fall within the scope of San Francisco Building Code Section 403 shall comply with the provisions of that section. 1102.2.1 Horizontal additions. Horizontal additions shall meet the following requirements: Where the cumulative area of horizontal additions, excluding basement additions, exceeds 30% percent of the area of the original building or structure, excluding basements, and the additions are structurally interconnected to, or not separated to comply with ASCE 7-22 Section 12.12.2, the entire structure shall comply with Section 304.4. Chapters 12 to Chapter 15 [ ← ] These chapters are not adopted in San Francisco.
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