The 10 home addition contractors from Google's results for San Francisco, California, ordered by Google rating weighted by review count. No firm pays to be listed or ranked.
Last updated
Licensing in California. California contractors need a CSLB license for most remodeling work. Check the license number and its bond on the CSLB site before you sign.
on GoogleSan Francisco, CA
Be Home Remodeling is a San Francisco design-build contractor working throughout the Bay Area. It remodels kitchens and bathrooms, builds additions and takes on full-home remodels, from interior updates to complete overhauls.
(415) 704-7105 2001 Van Ness Ave Unit 351, San Francisco, CA 94109
on GoogleSan Francisco, CA
AYA Homes handles both design and construction of home additions for clients in San Francisco and the wider Bay Area as well as Reno and Washoe County in Nevada. Its projects include second-story additions, room expansions and covered patios planned to fit the architecture of the existing house.
(415) 347-1907 160 Vasquez Ave, San Francisco, CA 94127
on GoogleSan Jose, CA
Serving San Jose, San Francisco, Oakland, Berkeley and Palo Alto, BNO Builders adds space to Bay Area homes. Work includes new bedrooms, family rooms, second-story additions and ADUs built for rental income, with the team managing the project from start to finish.
(669) 201-2533 2290 N First St, San Jose, CA 95131
on GoogleLos Altos, CA
Valley Boutique Builders is a design-build remodeler in Los Altos covering Atherton, Cupertino, Los Altos Hills and the wider Bay Area. It handles kitchen and bathroom remodels, full-home remodels, home additions, ADUs and custom home construction.
(669) 201-9208 153 2nd St Unit 105, Los Altos, CA 94022
on GoogleSan Francisco
Sunset Home Builders is a San Francisco remodeling company working on whole homes, kitchens and bathrooms. It also builds room additions, replaces roofs and reworks backyards, taking projects from concept to completion.
on GoogleSan Francisco
This Newark, California builder expands San Francisco homes with room additions and also takes on kitchen and bathroom remodels. Its exterior work includes decks built for outdoor views and weather-resistant siding.
on GoogleSan Francisco, CA
Andrew Morrall is a residential architect in San Francisco who designs second and third-story additions, whole-house remodels and new homes. Recent projects include a Sunset District third-story addition, a Noe Valley remodel, a Redwood City colonial addition and homes in the Oakland Hills.
(415) 341-5980 2730 Mission St, San Francisco, CA 94110
on GoogleConcord, CA
Golden Heights Remodeling, based in Concord, plans and builds room additions for San Francisco homeowners. Projects range from home offices and primary suites to family rooms, with guidance on design options, budgeting, zoning and building permits.
(800) 521-0950 1110 Burnett Ave # J, Concord, CA 94520
on GoogleSan Francisco
San Francisco Design Build is a design-build firm on Lily Street in San Francisco. One featured project is a Victorian in Noe Valley where it added a rear addition holding a primary suite, a laundry room and a home office.
San Francisco
On the Peninsula and in San Francisco, Pinnacle Construction adds rear and side extensions and new upper floors to existing homes. The company manages foundation and framing work, subcontractors, scheduling and inspections so each addition ties into the house's layout and exterior.
In San Francisco, a bump-out typically costs $33,000 – $79,000. Remodeling labor in San Francisco runs about 32% above the US median, which accounts for most of the difference from the same project elsewhere.
These are the firms from Google's results for "home additions san francisco", with directories, chains and suppliers removed. They are ordered by Google rating weighted by review count, and the ratings shown are Google's. No firm pays to be listed or ranked. The list was last updated in October 2026.
Usually yes, or a design-build firm with in-house design. Additions need stamped structural drawings for the permit in most places, and zoning review on setbacks, height and lot coverage.