Basement Conversion in California

Ataman Studio is a trusted ADU contractor in Los Angeles, serving all of California. Full-service design, permitting, and construction for detached ADUs, garage conversions, and in-law units, with compliance to local zoning and state regulations.

Urbatect Development LLC is a California & Washington ADU contractor offering custom homes, garage conversions, JADUs & detached ADUs. 15+ years experience, 3,500+ projects, fixed pricing & 30% faster permits.

GetApprovedADU is a consulting firm specializing in ADU and JADU approvals. They assist with detached ADUs, garage conversions, granny flats, and attached units, helping homeowners boost property value and expand affordable housing options.

Long Beach Elite ADU Solutions specializes in ADU construction and garage conversions in Long Beach, CA. Services include detached ADUs, JADUs, basement and above-garage units. 15+ years experience, 150+ completed projects.

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.

A1 ADU Contractor specializes in garage conversions and custom ADU construction throughout Los Angeles and the San Fernando Valley. With over 15 years of experience, our team provides complete design, permitting, and construction services to transform underutilized spaces into beautiful, functional living areas. Whether you're creating a rental unit, guest house, home office, or multi-family dwelling, we deliver high-quality craftsmanship and personalized solutions tailored to your needs.

RODO Development LLC is a licensed LA-based ADU contractor offering full-service design-build solutions including garage conversions, detached ADUs, attached ADUs, basement conversions & custom designs across Los Angeles and surrounding areas.

Cornejos Builders offers ADU construction, garage conversions & home additions in LA & Orange County. 24 ADUs completed in 4 years. Costs range $80K–$250K. Licensed, insured, bonded. 1-year warranty included.

Jay Remodeling is a licensed ADU contractor in Los Angeles offering attached, detached, garage conversion, basement, and Junior ADUs. They handle design, permitting, and construction, helping homeowners add rental income or family space while boosting property value.

ADU Builder LA is a full-service ADU contractor in Los Angeles, managing every phase of accessory dwelling unit projects. They offer transparent pricing, expert guidance, and handle all permitting. Services include detached ADUs, attached ADUs, garage conversions, and JADUs.

Cozy ADU is a full-service ADU contractor in Greater Sacramento, CA, building detached ADUs, garage conversions, guest houses & more. Turnkey process from permits to construction. Free consultation available.

Accessory Dwelling Units (ADUs) offer California property owners passive income, elderly care solutions, and property value growth. Since 2020 legislation, ADU permits are easier to obtain. Construction costs range $350–$450/sq ft, with rental income potential up to $4,000/month.

Structura Remodeling is an LA-based licensed ADU contractor specializing in Accessory Dwelling Units, garage conversions & JADUs. Costs range $115K–$145K. Financing options include HELOC & construction loans. Free consultation available.

CSL Quality Construction is a trusted ADU contractor in San Diego County, offering full-service design, permits, construction, and renovations. ADUs can boost property value by 20–30% and generate rental income.

Burnette Construction offers licensed basement ADU conversion services in Antelope, CA. Specializing in below-grade builds, they handle design, permits, plumbing, HVAC, kitchens, bathrooms, flooring, and separate entry construction for fully compliant accessory dwelling units.