Compare adu construction estimates in San Francisco, CA
Free adu construction quotes in San Francisco, California. Typical range $217,500 – $435,000.
Low
$217,500
Average
$326,300
High
$435,000
San Francisco crews quote about $365 – $725 per square foot.
Vetted, licensed pros only — no spam calls.
What drives adu construction prices in San Francisco
Local labor, permitting and climate move San Francisco prices away from the national average.
Labor market
SF is the most expensive labor market on the West Coast; access and parking add to bids.
Permits
SF DBI permits, historic review and neighborhood notification are common on exterior work.
Climate
Fog, damp and hillside conditions favor moisture-resistant assemblies.
How to compare San Francisco quotes
- Collect three written quotes. Anything under $163,125 usually has scope missing.
- Compare line items — materials, labor, permits, disposal — not just the total.
- Confirm license, insurance and workmanship warranty length before you sign.
- Ask what triggers a change order and how it gets priced.
San Francisco questions
People also search: adu construction cost San Francisco · adu construction near me San Francisco · adu construction price per square foot San Francisco · adu construction permit cost San Francisco · free adu construction estimate San Francisco
Get 3 free quotes in San Francisco
Answer a few questions and we'll model a low, average and premium price for your zip code — then match you with accredited local pros.
Get 3 free quotes