ADU Contractors

Jordan & Jordan Construction builds custom home additions in Eugene & Springfield, OR since 1991. Services include bedrooms, garages, sunrooms, second stories & ADUs. Licensed, bonded & insured (CCB#176193).

Licensed ADU contractor and construction management firm for NYC homeowners. We handle eligibility, permitting, and the full build across Queens, Brooklyn, Staten Island, and the Bronx.

Expert ADU builder offering detached ADUs, garage conversions & backyard cottages. Structured process: feasibility, permits, construction & final walkthrough. Boost property value, enable multigenerational living & create flexible spaces.

DSA Architects designed an 850 sq. ft. second-floor ADU in Berkeley Hills for multi-generational living. Features 2 beds, 1 bath, open layout, Tilden Park views, roof deck, solar PV, heat pumps, and gray-water system.

DeMarco Builders is a licensed general contractor since 1996, offering residential and commercial construction, custom homes, ADUs, remodels, and additions. Using critical path management, they deliver projects faster while maintaining quality.

Arizona Building Contractors, LLC is a locally owned contractor that builds custom ADUs, casitas, guesthouses, and garage conversions throughout the Tucson metro area. They help clients figure out what's possible and we see every project through from start to finish.

View ADU Builders is a trusted Los Angeles ADU contractor specializing in detached ADUs, garage conversions, attached ADUs & in-law suites. Costs range from $80K–$350K+. Free 3D design consultations available.

Murray Lampert, San Diego's trusted ADU builder since 1975, offers full design-build services including granny flats, in-law suites, and garage conversions. With 50+ years of experience, they deliver custom, high-quality accessory dwelling units tailored to your needs.

Avorino specializes in ADU construction, offering detached, attached, garage conversion, and above-garage units. Projects range from $250K–$400K, covering design, permitting, and build phases over 10–14 months.

Valley Home Builders Inc. is a Silicon Valley design-build contractor serving Santa Clara & San Mateo Counties. Founded in 2005, they specialize in kitchen remodeling, ADU construction, and home renovations across San Jose, San Mateo & beyond.

Carson Custom Homes LLC is a San Antonio-based custom home builder and ADU contractor serving Texas Hill Country since 1999. They specialize in custom homes, remodeling, outdoor living, and accessory dwelling units including casitas and in-law suites.

Vermont Flex Homes is an experienced ADU contractor in Windham County, VT, specializing in permitted, move-in ready accessory dwelling units, garage conversions, in-law suites, and custom ADU builds tailored to Vermont's climate and codes.

Allison Ramsey Architects offers custom home design, plan modifications, 3D modeling, and site planning. They support residential projects including ADUs, granny flats, and casitas from concept to completion.

Woodwright Custom Builders offers expert ADU services in Boise, ID, including detached units, garage conversions, basement ADUs & in-law suites. Serving Ada County with permit management & a clear design-build process.

F&A Modular Homes builds custom modular ADUs, granny flats & backyard cottages. Units ship fully built or flat-packed, meet CA codes, & can be relocated. Builds in 3–6 weeks, cutting on-site labor by 70%. Founded to address veteran homelessness.