The 9 home addition contractors from Google's results for San Jose, 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 Jose, CA
Prada Builders constructs home additions for homeowners in Santa Clara and the wider San Jose area, adding room to existing houses. Its addition work includes bathroom expansions, and consultations are offered to plan out new living space.
(408) 549-5757 1721 Rogers Ave A, San Jose, CA 95112
on GoogleSan Jose
In San Jose, Mayer's Construction builds accessory dwelling units, including garage conversions and detached guest houses. Design, permitting and construction are all handled in-house, so one company carries an ADU from early drawings through the finished build.
on GoogleSan Jose
Bright Key Construction focuses on home additions in San Jose, from single-room expansions to full second-story builds. Each addition is planned to match the existing house so the new space fits both the floor plan and the look of the original home.
on GoogleSanta Clara, CA
ODL Construction is a Santa Clara, California contractor listed for home additions.
(408) 676-5447 3046 Scott Blvd #18, Santa Clara, CA 95054
on GoogleThousand Oaks, CA
Mayan Home Builders takes on renovation and new construction for homeowners in San Jose and Thousand Oaks. Its project list covers kitchen and bathroom remodels, whole-house renovations, garage conversions, ADUs, home additions and ground-up new homes, with project management included.
(800) 397-4026 3625 E Thousand Oaks Blvd, Thousand Oaks, CA 91362
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 Jose, CA
Next Stage Design runs remodels across Santa Clara County on a design-build basis, taking projects from design through construction with one team. It handles home additions and larger remodels, and the company is transitioning to full employee ownership.
(408) 323-5300 2157 O'Toole Ave #70, San Jose, CA 95131
on GoogleSan Jose, CA
Wise Builders is a design-build remodeling company in San Jose that works with homeowners across the Bay Area. It handles full home renovations, with design and construction managed by one team from planning to completion.
(408) 650-2432 2355 Paragon Dr Ste E, San Jose, CA 95131
San Jose
Tucán Builder is a Redwood City general contractor, run by a father and son and serving San Jose and San Mateo County. It remodels kitchens, bathrooms, offices and whole homes, and builds room extensions and ADUs.
In San Jose, a bump-out typically costs $32,000 – $77,000. Remodeling labor in San Jose runs about 28% 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 jose", 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.