Compare home addition estimates in San Francisco, CA
Free home addition quotes in San Francisco, California. Typical range $65,300 – $203,000.
Low
$65,300
Average
$123,300
High
$203,000
San Francisco crews quote about $220 – $655 per square foot.
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What drives home addition 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 $48,975 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
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