Additions and Remodels Cost in San Francisco, CA in 2026
Most Additions and Remodels projects in San Francisco, CA cost between $62,000 and $285,000. The typical price is $135,000.
Labour and materials in San Francisco run about 29% above the national average. These figures are adjusted for that, so they are not the national average you will find elsewhere.
What drives the price
- Whether the addition needs its own foundation and roof tie-in
- Adding a bathroom or kitchen (plumbing and electrical runs)
- Structural work to the existing wall being opened up
- Local permit and inspection requirements
Usually included
- Framing, roofing and siding to match
- Electrical rough-in and finish
- Insulation, drywall and paint
- Flooring and trim
Usually extra
- Permits and architectural drawings
- Site work or tree removal
- High-end fixtures and appliances
Unit prices in San Francisco, CA
| Quality tier | Cost per sq ft |
|---|---|
| Budget | $155 |
| Mid-range | $335 |
| High-end | $720 |
Home addition and remodeling contractors in San Francisco, CA
Businesses listed on Google near San Francisco, CA. We are not affiliated with them and do not vet them — always confirm licensing and insurance before hiring.
We Do Construction
5.0(159 reviews)
1528 Union St, San Francisco, CA 94123
Together Home Remodeling
5.0(61 reviews)
1893 Hayes St, San Francisco, CA 94117
Mission Home Remodeling
5.0(58 reviews)
475 Gough St, San Francisco, CA 94102
TRIOND Remodeling and Design Inc.
4.9(62 reviews)
584 Castro St #2149, San Francisco, CA 94114
Masterful Construction
5.0(51 reviews)
1390 Market St 200 2058, San Francisco, CA 94102
SF Construction ADU and Room Additions.
4.9(37 reviews)
377 W Portal Ave Ste B, San Francisco, CA 94127