LRL Builders

1661 Botelho Drive, Walnut Creek, CA 94596 39.9 miles

Licensed Eco-Friendly

Bayside Builders Group

1151 Harbor Bay Parkway, Alameda, CA 94502 30.4 miles

Licensed 25 years in business

Bayside Builders Group is a licensed Bay Area ADU contractor with 25+ years of experience. Services include detached ADUs, garage conversions, and in-law suites. Serving Oakland, San Jose, San Francisco, and surrounding counties.

Aldridge Construction

Monterey, CA 93901 49.6 miles

26 weeks build time

Aldridge Construction builds ADUs in Salinas, CA—detached, attached, garage conversions & interior units. Projects cost $150K–$300K, take 4–8 months, and include full permitting support. Free consultations available.

Inspired ADUs

1940 Union Street, Oakland, CA 94607 36.8 miles

Licensed 20 years in business 36 weeks build time

Inspired ADUs is an architect-led ADU design firm serving the Bay Area and Southern California. With 20+ years of experience and 250+ ADUs permitted, they offer custom, panelized, and modular ADU solutions, plus interior design and SB9 lot split services.

DNM Architecture

1A Gate 5 Road, Sausolito, CA 94965 45.6 miles

Eco-Friendly

DNM Architecture is a California-based firm specializing in ADU design and permitting. Their ADUxDNM program covers site analysis, design, permitting, and construction management, offering detached ADUs, garage conversions, and more.

Custom Home

2092 Concourse Drive, San Jose, CA 95131 10.3 miles

Licensed 21 years in business 40 weeks build time

Custom Home is a Bay Area ADU contractor (CSLB #986048) with 160+ projects since 2005. They build detached, attached, junior ADUs & garage conversions across South Bay & Peninsula, with costs from $120K–$500K+.

Vargas Construction

16064 Vía Harriet, San Lorenzo, CA 94580 26.6 miles

16 weeks build time Eco-Friendly

Vargas Construction is a California ADU contractor offering detached, attached, garage, junior, and multifamily ADUs. They handle design, permitting, and construction with energy-efficient materials, custom interiors, and full amenities in 2–6 months.

Vitalize Build

3120 Scott Blvd, Suite 130, Santa Clara, CA 95054 6.2 miles

Eco-Friendly

Vitalize Build is a Bay Area ADU contractor offering design and construction services for detached ADUs, garage conversions, and in-law suites. They provide preapproved, predesigned, and custom layouts ranging from 238 to 1,200 sq ft.

Bay Builders & Remodeling

800 Charcot Avenue, San Jose, CA 95131 9 miles

Luxury Builds

Bay Builders & Remodeling specializes in custom ADU construction across Santa Clara, San Mateo, and East Bay. Services include attached, detached, garage conversions, and JADUs, helping homeowners add rental income, family housing, or workspace.

Edri Construction, Inc. Berkeley

2120 University Ave, Berkeley, CA 94704 40.2 miles

Eco-Friendly Luxury Builds

Edri Construction, Inc. is a Berkeley-based general contractor specializing in ADU construction across the Bay Area. Services include garage conversions, detached ADUs, attached additions, granny flats, and custom interiors, with full project management from permits to finishing.

Other cities in California

What you need to know

Searching for top Garage Conversion ADU Contractors in Cupertino, California? Our directory highlights trusted local professionals who specialize in designing and building accessory dwelling units (ADUs).

Working with a qualified Garage Conversion ADU Contractor in Cupertino ensures your ADU project meets local building codes, zoning laws, and permit requirements. Whether you're planning a detached ADU, garage conversion, or backyard cottage, experienced Garage Conversion professionals can guide you through every step.

Cupertino homeowners are increasingly investing in ADUs to create additional living space, generate rental income, or support multigenerational living. The Garage Conversion experts featured here bring local expertise and proven experience to help make your project a success.

Browse our listings to find the best Garage Conversion ADU Contractors in Cupertino, California, and get started today.

Garage Conversion near Cupertino, CA