Zoning & Building Rules in San Francisco, CA

SF has some of the most complex zoning in the nation with 90+ zoning districts, height/bulk districts, and special use districts. The city has eliminated single-family-only zoning. Enter any San Francisco address at ReadyPermit.ai for instant zoning analysis including zone code, permitted uses, setbacks, and FAR from 20+ government sources.

ADU eligibility in San Francisco depends on your specific zoning designation and lot size. Statewide ADU legislation (AB 2221, SB 897) allows ADUs by right on most residential lots. Local jurisdictions cannot impose minimum lot size or owner-occupancy requirements for ADUs. Enter your address at ReadyPermit for a property-specific analysis.

Most cities require plan check and building permit. ADU permits must be processed within 60 days by law. Larger projects may require CEQA review, adding months. Timeline varies from 4 weeks (ADU) to 12+ months (multi-family with discretionary review). ReadyPermit estimates permit timelines as part of the Buildability Report for any San Francisco address.

The Buildability Score analyzes 142 factors including zoning, flood risk, environmental hazards, and infrastructure for any San Francisco address. Scores range 0-100. Enter your address at ReadyPermit for your score.