Basement Conversion in California
Build Method Construction
12304 Moorpark St. Ste 102, Studio City, CA 91604
Build Method Construction is a licensed ADU contractor in Los Angeles County with 25+ years of experience. They build detached ADUs, garage conversions, JADUs, and more—handling design, permits, and construction for single and multi-family properties.
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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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MHP Construction
2402 South Sergeant Avenue, Rancho Cordova, CA 64804
MHP Construction offers ADU construction services in California, including detached units, conversions, and in-law suites. ADUs provide rental income, family housing, and flexible living—without buying extra land.
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G.J. Gardner Homes Sacramento
700 Alhambra Boulevard, Sacramento, CA 95816
An ADU (accessory dwelling unit) is a self-contained living space on the same property as a primary home. G.J. Gardner Homes Sacramento offers expert ADU construction in California, guiding clients through a 7-step process from consultation to handover.
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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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King Home Remodeling
1012 West Beverly Boulevard, Montebello, CA 90640
King Home Remodeling builds detached, attached, garage conversion, basement, and junior ADUs in Montebello. Services include design, permitting, construction, and inspections. Local zoning, size limits, and parking rules apply.
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The ADU Builder Inc
3639 Atlantic Avenue, Long Beach, CA 90807
Los Angeles ADU contractor The ADU Builder offers 10+ years of experience in ADU construction, garage conversions, JADUs, custom homes & remodels. They guide clients through design, permits, financing & building with quality craftsmanship.
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Humboldt ADU
3015 H Street, Eureka, CA 95501
Humboldt ADU is a Humboldt County program helping homeowners build Accessory Dwelling Units (ADUs) like granny flats or backyard cottages to boost affordable housing. It offers guides on types, permits, financing, and construction.
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G.J. Gardner Homes Clovis
1177 North Willow Avenue, Clovis, CA 93611
An ADU (accessory dwelling unit) is a self-contained living space on your property. G.J. Gardner Homes Clovis is an experienced ADU builder in Clovis, CA, offering a structured 7-step build process, from consultation to handover.
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Alon Design & Remodeling
722 Charcot Avenue, San Jose, CA 95131
Alon Design & Remodeling is a leading ADU contractor offering detached, attached, garage conversion, basement, and JADU options. ADUs boost property value, generate rental income, and provide independent living spaces with full amenities.
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ADU Builders Group
15166 Los Gatos Boulevard, Los Gatos, CA 95032
ADU Builders Group is a Bay Area family-owned ADU contractor with 21+ years of experience. They build attached, detached, converted, and junior ADUs, offering full design-build services, permitting support, a 3-year warranty, and a 10-year structural guarantee.
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C.J. Skeeles General Contractor
24845 Canyon View Court, Hayward, CA 94541
C.J. Skeeles General Contractor specializes in ADU construction in Hayward, Oakland & San Francisco, CA. Services include detached ADUs, garage conversions & interior conversions, all built to California zoning & permitting requirements.
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Modern Granny Flat San Diego
5727 Adelaide Avenue, San Diego, CA 92115
ModernGrannyFlat is San Diego's ADU & granny flat specialist, offering eco-friendly, affordable accessory dwelling units. Services include garage conversions, detached ADUs, & JADUs, guiding homeowners through design, permits & construction under California ADU laws.
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ADU Gurus
450 South Melrose Drive, Vista, CA 92081
ADU Gurus™ is a California ADU builder since 2020, offering full-service design, permitting, and construction for granny flats, garage conversions, JADUs, and detached ADUs up to 1,200 sq ft on single-family and multi-family lots.
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Red White & Blue Construction
1080 Carol Lane, Lafayette, CA 94549
RWB Construction is a Lafayette, CA-based ADU contractor serving the Bay Area. They build detached ADUs, garage conversions, granny flats & in-law suites, managing design, permitting, and construction from start to finish.
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Other cities in California
What you need to know
Searching for top Basement Conversion ADU Contractors in California? Our directory highlights trusted local professionals who specialize in designing and building accessory dwelling units (ADUs).
Working with a qualified Basement Conversion 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 Basement Conversion 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 Basement Conversion experts featured here bring local expertise and proven experience to help make your project a success.
Browse our listings to find the best Basement Conversion ADU Contractors in California, and get started today.