Detached ADU in California
Step Up Builders Inc
16250 Ventura Boulevard, Encino, CA 91436
Step Up Builders Inc is a Class A licensed ADU contractor in Encino, CA, serving Los Angeles, San Fernando Valley & Inland Empire. 30+ years experience in detached ADUs, garage conversions, JADUs & remodels. Free estimates available.
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Central Coast ADU
260 Maple Court, Ventura, CA 93003
Central Coast ADU offers full ADU planning, design, and permitting services for homeowners on the Central Coast. From granny flats to garage conversions, they deliver construction-ready plans and approved permits.
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Custom ADU Builder
Los Angeles, CA 90012
Custom ADU Builder specializes in detached ADUs, attached ADUs, garage conversions & JADUs. Projects complete in ~3 months. Pricing starts at $235/sqft. Turn-key builds include quartz countertops, tile showers & luxury vinyl flooring.
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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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Lee & Co Contractors
251 Auburn Ravine Road, Sacramento, CA 95603
Lee & Co Contractors builds custom ADUs and home additions in Sacramento, Auburn, and Northern California. Services include detached ADUs, in-law suites, garage conversions, and home expansions, with a planning-first approach for smooth construction.
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RL Remodeling
4360 Twain Avenue, San Diego, CA 92120
RL Remodeling offers garage conversions, room additions, and ADU construction. With nearly 50 years of combined experience, they handle design, permits, and execution. Garage ADU conversions typically cost $30K–$60K+, offering strong rental income potential and increased property value.
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Ohayon Construction
Los Angeles, CA 90012
Ohayon Construction is a licensed Los Angeles ADU contractor since 2008. They build detached ADUs, garage conversions, attached ADUs & JADUs. Serving Beverly Hills, Santa Monica & more. Free consultation available.
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Nestadu
100 Shoreline Highway, Mill Valley, CA 94941
Nestadu is a full-service ADU builder offering custom site-built and prefab accessory dwelling units. Prefab models range from $115K–$317K. Custom builds start at $400/sq ft. Financing options include HELOCs, construction loans, and CA grants.
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Mastercraft Home Improvement
2227 Faraday Avenue, Carlsbad, CA 92008
Mastercraft Home Improvement offers expert ADU construction services, including granny flats, garage conversions & in-law suites. Boost property value by 10–25%, earn rental income & add flexible living space with a trusted ADU contractor.
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Shefer Builder Inc.
585 S Winchester blvd #759, San Jose, CA 95128
Shefer Builder Inc. offers full-service ADU construction, managing design, permits, and building. Specializing in detached ADUs, granny flats, and in-law suites, they deliver custom accessory dwelling units that boost property value and rental income.
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West Coast Building and Design
9511 Nicole Way, Santee, CA 92071
West Coast Building and Design builds ADUs in California, including granny flats, garage conversions, and detached units. They help homeowners boost property value, house family members, or earn rental income through structured, process-driven construction.
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Homestead ADU
3705 Meadow View Drive, Redding, CA 96002
Homestead ADU offers turnkey accessory dwelling units for California homeowners. Models range from 451 to 1,200 sq ft. Offsite modular construction cuts costs by 30% and delivers units in 6–7 months. Serving Shasta & San Luis Obispo County.
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IMKAT ADU Builder
1300 National Drive, Sacramento, CA 95834
Experienced ADU builder offering a streamlined 4-phase process: free consultation, pre-construction & permitting, construction, and final handover. Covers granny flats, Casitas, detached ADUs & in-law suites with full transparency.
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Urban Construction & Design Solutions
3490 East Spring Street, Long Beach, CA 90806
Licensed Long Beach general contractor Urban Construction & Design Solutions (CA #1030683) specializes in ADU construction, garage conversions, kitchen remodels, bathroom renovations & home additions across Greater LA and Orange County.
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Bay Villa Builders
36007 Bayonne Drive, Newark, CA 94560
Bay Villa Builders brings over 50 years of combined experience in crafting expertly designed ADUs that enhance both your home's functionality and its value. An Accessory Dwelling Unit, or ADU, serves as an additional living space on your property.
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Other cities in California
What you need to know
Searching for top Detached 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 Detached 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 Detached 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 Detached ADU experts featured here bring local expertise and proven experience to help make your project a success.
Browse our listings to find the best Detached ADU ADU Contractors in California, and get started today.