Attached ADU in California
Vision Home Remodeling
7717 Owensmouth Avenue, Canoga Park, CA 91304
Vision Home Remodeling Inc. offers full-service ADU construction in Los Angeles, including detached units, attached dwellings, casitas, and rental-ready granny flats. Services cover design, permitting, and ground-up builds tailored to LA zoning laws.
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YOR Construction & Investments
12135 Miranda Street, Valley Village, CA 91607
An ADU (accessory dwelling unit) is a secondary home on a residential lot. Garage conversion ADUs are cost-effective, blending with existing homes. YOR Construction & Investments specializes in Los Angeles ADU garage conversions.
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Condor Builders
12933 Digger Pines Circle, Grass Valley, CA 95949
Condor Builders offers custom ADU design & construction in Sacramento & Northern California. Services include permitting, energy-efficient builds, garage conversions & two-story ADUs. Serving Roseville, Folsom, Granite Bay & more. Free estimates available.
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Pasadena Master ADU Builder
930 East Colorado Boulevard, Pasadena, CA 91106
Pasadena Master ADU Builder is a top ADU contractor in San Gabriel Valley, offering detached ADUs, garage conversions, and JADUs. With 20+ years experience, 150+ projects, and 98% satisfaction, they deliver compliant, high-quality builds boosting property value by 20–30%.
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California ADU Center INC
7542 Laurel Canyon Boulevard, Los Angeles, CA 91605
California ADU Center INC specializes in ADU planning, design, and construction across California. Services include detached ADUs, garage conversions, JADUs, granny flats, and in-law suites. They manage permitting and navigate California's ADU regulations for homeowners.
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Baum Construction & Development Inc
2900 Fidler Avenue, Long Beach, CA 90815
ADUs (accessory dwelling units) are self-contained homes on existing properties, ideal for rentals or multi-generational living. Costs range $100K–$200K. Baum Construction & Development Inc builds ADUs in Long Beach, CA.
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Levatto Construction
1657 Camelot Dr, Redlands, CA 92374
Levatto Construction offers ADU construction in Redlands, CA, including granny flats, garage conversions, backyard cottages & attached units. Code-compliant builds tailored to your property goals.
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Hernandez Family Construction
18124 Varden Drive, Madera, CA 93638
Hernandez Family Construction serves Fresno & Madera, CA, offering custom homes, ADUs, granny flats, multifamily builds & spec homes. Founded by Michael Hernandez, they also provide construction financing guidance including one-time close loans.
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ON Design & Remodeling
1762 Technology Drive, San Jose, CA 95110
ON Design & Remodeling is a Bay Area ADU builder offering home additions, garage conversions, granny flats, and in-law suites. They help homeowners expand living space, boost property value, and generate rental income.
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HBC Construction
41060 High Street, Fremont, CA 94538
HBC Construction, based in Fremont, CA, specializes in ADU building, garage conversions, new homes & additions across the Bay Area. Licensed, code-compliant, full-service from planning to completion.
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Zume Builders
1670 S Amphlett Blvd, Suite 214-20, San Mateo, CA 94402
Zume Builders, based in San Mateo, CA, specializes in custom homes, ADUs, and prefab construction across the Peninsula, serving Atherton, Palo Alto, Hillsborough & more.
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Integrity Home Improvements
7343 Ronson Road, San Diego, CA 92111
Integrity Home Improvements is a San Diego remodeling company founded in 2003 by Ryan Parkinson. Specializing in kitchen & bathroom remodels, home additions, and outdoor living, they serve communities across the greater San Diego area.
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Liebo Builders
750 North San Vicente Boulevard, West Hollywood, CA 90069
Liebo Builders is a Southern California ADU contractor specializing in detached, attached, garage conversion & interior ADUs. Services include custom design, permitting, and construction for guest houses, rentals & home offices.
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Green Tech
5605 Woodman Avenue, Van Nuys, CA 91401
Green Tech Remodeling offers full-service construction, renovation, and ADU projects including garage conversions, kitchen and bathroom remodels, home additions, flooring, roofing, electrical, plumbing, and more, with 3D design previews included.
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Calpacific Constracting
24024 Outrigger Drive, Canyon Lake, CA 92587
Calpacific Contracting builds ADUs, casitas & garage conversions across Riverside, Orange, LA & San Bernardino Counties. 80+ years experience. Full-service: permits, design, construction & inspections handled end-to-end.
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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.