Detached ADU in California
GLAD Construction ADU Builders Roseville
2281 Lava Ridge Court, Roseville, CA 95661
California homeowners can access ADU funding through state programs like CalHome, LEAP Grants, and CDBG, plus local initiatives offering loans and technical assistance. GLAD Construction ADU Builders Roseville helps clients navigate these opportunities.
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Regalados Construction Inc.
836 6th Street, San Jose, CA 93635
Regalados Construction Inc. is a family-owned California contractor with 30+ years of experience. Specializing in ADUs, JADUs, garage conversions, finish carpentry, and commercial construction across Los Banos, Central Valley, and the Bay Area.
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ADU Builders CA
6464 Sunset Boulevard, Los Angeles, CA 90028
ADU Builders is a licensed Los Angeles ADU contractor with 15 years of experience. They offer detached, attached, garage conversion, and JADU construction, managing permits, design, and inspections per California ADU building codes.
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EcoSmart Builders
21300 Victory Boulevard, Calabasas, CA 91367
EcoSmart Builders is a licensed Southern California ADU contractor specializing in accessory dwelling units, home expansions, and fire rebuilds. Serving Los Angeles County, they manage design, permitting, and construction of detached, attached, garage conversion, and junior ADUs.
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Get Bizzy LLC
150 Riverbank Lane, Heritage Ranch, CA 93446
Get Bizzy LLC specializes in garage-to-ADU conversions in San Luis Obispo County. They handle permits, design, construction & inspections for 1, 2 & 3-car garages, creating fully legal, California-compliant accessory dwelling units.
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Geico Builders
1901 Harrison Street, Oakland, CA 94612
Geico Builders offers ADU services including detached ADUs, attached ADUs, Junior ADUs, garage conversions, and home additions. Ideal for rental income, family housing, or maximizing space on your existing property.
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Adorn Construction Group
West End Rd., Arcata, CA 95521
Adorn Construction Group in Arcata, CA specializes in custom ADU construction, including detached ADUs and backyard cottages. They offer full-service builds compliant with local codes, helping homeowners add living space or rental income.
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Cabal Construction
7103 University Avenue, La Mesa, CA 91942
Detached ADUs (backyard cottages, granny flats) are standalone units adding rental income, family housing, or workspace. Costs range $100K–$350K. Cabal Construction guides homeowners through design, permits, and construction.
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Nestadu
402 West Broadway, San Diego, CA 92101
Nestadu is a full-service ADU builder offering custom site-built and prefab ADUs. Site-built units start at $400/sqft; prefab models from $115K. They handle design, permitting, and construction, plus financing guidance including HELOCs and grants.
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Addition Building & Design Inc.
4335 Van Nuys Boulevard, Sherman Oaks, CA 91403
Addition Building & Design Inc. is a Los Angeles design-build firm offering custom home building, additions, renovations, ADU construction, and outdoor living spaces. Their integrated approach covers planning, permitting, and construction for residential projects across LA.
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J&I Construction
10054 Alondra Boulevard, Bellflower, CA 90706
J&I Construction is a trusted ADU contractor offering full-scope accessory dwelling unit services, including detached ADUs, garage conversions, granny flats, in-law suites, JADUs, and backyard cottages. Free consultations available.
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Aldridge Construction
Monterey, CA 93901
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.
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S Squared Construction & Pool Contractor
3343 Bancroft Drive, Spring Valley, CA 91977
S Squared Construction & Pool Contractor is a licensed Solana Beach, San Diego contractor with 13+ years of experience in ADU construction, garage conversions, and custom pool installation. They handle design, permitting, and building for detached ADUs, in-law suites, and backyard cottages.
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CDU Inc.
#595 San Ramon Valley Blvd, Danville, CA 94526
CDU Inc. offers expert ADU construction & remodeling in the Greater Bay Area. Services include new builds, garage conversions, electrical, plumbing & custom design to boost property value & functionality.
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A.G.A. Construction Inc
18375 Ventura Boulevard, Tarzana, CA 91356
A.G.A. Construction Inc is a Los Angeles ADU contractor specializing in accessory dwelling units & JADUs. Services include custom design, permits, plumbing, electrical & energy-efficient construction to maximize property value.
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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.