Planning Commission backs code change to align mezzanine rules with building code
Sep 10, 2026
The commission voted unanimously to recommend changes aligning planning code mezzanine coverage (33.3%) with building-code exceptions that allow up to 50% coverage in some cases, a staff modification intended to reduce plan-check delays between Planning and DBI.
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The San Francisco Planning Commission voted unanimously on Sept. 10 to recommend a planning-code amendment that clarifies how mezzanines are counted toward a building's story total. Planning staff proposed modifying the planning code so it references building-code exemptions (such as sprinkler systems, occupancy type and construction type) that can allow mezzanines up to 50% of a floor plate rather than the planning code's existing 33.3% threshold.
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