Attached ADU in California
Lumina Builders Inc.
4901 Morena Boulevard, San Diego, CA 92117
Lumina Builders Inc. follows a 5-step remodeling process: consultation, permits, design, construction, and quality check. Serving San Diego, they handle ADUs, garage conversions, and full home remodels with dedicated project management.
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Nucave Construction Inc.
440 South Melrose Drive, Vista, CA 92081
Experienced ADU contractor offering a structured process: site assessment, custom design options, transparent cost estimates, permit guidance, and financing support. Specializing in detached ADUs, garage conversions, and in-law suites.
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Create Construction
3500 West Olive Avenue, Burbank, CA 91505
Create Construction is a licensed, family-owned ADU contractor serving Los Angeles, Orange, and Ventura Counties. They specialize in garage conversions, granny flats, and attached ADUs, managing design, permits, and construction from start to finish.
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Price Builders
6351 Nancy Ridge Drive, San Diego, CA 92121
Price Builders is an Imperial Beach design-build contractor specializing in home additions, ADUs, and remodeling. Services include second-story additions, in-law suites, kitchen and bathroom remodels, and aging-in-place renovations.
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GADI Construction
3205 Cabrillo Avenue, Santa Clara, CA 95051
GADI Construction, led by Nadav, specializes in ADU construction, home expansions, garage conversions & granny flats. Known for detailed planning, clear communication & professional client guidance throughout every project phase.
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Gannage Construction
1560 Santa Rita Road, Templeton, CA 93465
At Gannage Design & Construction, we specialize in ADU construction on the Central Coast, guiding you from concept to completion with a seamless, stress-free process.
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Supreme Remodeling Inc.
5000 Van Nuys Boulevard, Van Nuys, CA 91403
Supreme Remodeling Inc. is a licensed Los Angeles general contractor with 30+ years of experience. Services include kitchen & bathroom remodeling, ADU construction, garage conversions, room additions, and new home builds across LA, Ventura & Orange Counties.
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Landmark Building Inc
Los Angeles, CA 90027
Landmark Building Inc is a Los Feliz-based general contractor serving Los Angeles neighborhoods including Hollywood Hills, Silverlake & Echo Park. They offer residential & light commercial remodeling, ADUs, garage conversions & free estimates.
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Home Quality Remodeling
1070 Concord Avenue, Concord, CA 94520
Home Quality Remodeling Inc. is a licensed Bay Area general contractor (CSLB #838832) with 20+ years of experience. Services include kitchen & bathroom remodeling, room additions, ADUs, and outdoor living across Concord, San Jose, and Paramus, NJ.
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ENE Smarthome, Inc.
690 Saratoga Avenue, San Jose, CA 95129
ENE Smarthome, Inc. is a Bay Area contractor offering home remodeling, ADU construction, smart home upgrades, and accessibility improvements. Services include garage conversions, granny flats, aging-in-place remodels, and SB9-compliant ADU projects.
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Bobcat Builders
East Palo Alto, CA 94303
Bobcat Builders is a Bay Area ADU contractor specializing in accessory dwelling units in Palo Alto. They offer attached & detached ADUs, garage conversions, granny flats & in-law suites, backed by a Two Year Satisfaction Guarantee.
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ADU by Kn Remodeling
19709 Ventura Boulevard, Woodland Hills, CA 91364
KN Remodeling is a certified ADU contractor serving Los Angeles, Woodland Hills, Simi Valley & Thousand Oaks. Specializing in detached ADUs, attached ADUs & garage conversions, they handle design, permits & construction with 100+ ADU plans completed.
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8A-Concrete & Construction
Fresno St, Fresno, CA 93703
8A-Concrete & Construction builds ADUs, garage conversions, and room additions in Fresno, Clovis & Visalia. Services cover foundation, framing, electrical, plumbing & interior finishes. Projects managed from permit to final inspection.
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Green Bee Construction Inc
10748 Dolores Drive, Grass Valley, CA 95945
Green Bee Construction Inc builds high-end ADUs, custom homes, additions, and renovations for Nevada County homeowners who want quality they can trust. Based in Grass Valley, we bring twenty years of local permitting expertise — including septic systems, setback rules, and zoning requirements specific to the foothills — and a contractor who puts your interests first, every time. No runaround. No surprises. Just exceptional craftsmanship and straight communication from start to finish.
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CCS Inc.
5535 Balboa Boulevard, Encino, CA 91316
CCS Inc. offers ADU construction, garage conversions, remodeling & permit services in Long Beach, CA. Costs range from $100K–$400K+, with timelines of 4–14 months. Free consultations available for eligible residential properties.
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Other cities in California
What you need to know
Searching for top Attached ADU ADU Contractors in California? Our directory highlights trusted local professionals who specialize in designing and building accessory dwelling units (ADUs).
Working with a qualified Attached ADU ADU Contractor in California 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 Attached ADU professionals can guide you through every step.
California homeowners are increasingly investing in ADUs to create additional living space, generate rental income, or support multigenerational living. The Attached ADU experts featured here bring local expertise and proven experience to help make your project a success.
Browse our listings to find the best Attached ADU ADU Contractors in California, and get started today.