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San Francisco ADU guides
Answers for San Francisco homeowners, checked against Planning Department and state sources as of November 2026.
Guides
State or Local ADU Program in San Francisco?
How the two programs differ on review, units and rent control.
Read the guideAre ADUs rent controlled in San Francisco?
When rent control applies and when state law prevents it.
Read the guideWhat are the ADU rules in San Francisco?
State law, then the city programs on top.
Read the guideHow much does an ADU cost in San Francisco?
Published Bay Area ranges and San Francisco cost drivers.
Read the guideHow long does it take to build an ADU in San Francisco?
Review clocks, construction and what slows things down.
Read the guideIs your lot ready for an ADU?
Send your address and a sentence about what you want. We look up the zoning, setbacks and utility routes and reply with the ADU types that fit.
We build in San Francisco, CA.