Builder Directory
Find prefab manufacturers, design-build firms, and contractors serving your area.
The ADU Company
This licensed ADU contractor operates from Covina and serves the Greater Los Angeles metropolitan area with comprehensive design and construction services spanning garage conversions, detached units, junior ADUs, additions, and remodels. The company manages projects end-to-end, from initial design through final inspection, offering homeowners a streamlined full-service approach to ADU development. Its local expertise and diverse project types position it as a regional specialist in the LA market.
Villa Homes
Villa Homes delivers full-service prefab ADUs across 10+ floor plans ranging from 440 to 1,200 square feet, with HUD approval and transparent turnkey pricing that encompasses permitting, site work, delivery, and installation. The company equips all units with Energy Star appliances as standard and offers wildland-urban interface fire compliance options for high-risk regions. Beyond single-family clients, Villa Homes serves multifamily developers and institutional buyers seeking scalable ADU solutions.
Wellmade
This California-based manufacturer specializes in customizable prefab ADUs, houses, sheds, and saunas, handling the entire project lifecycle from design through turnkey installation with fixed, all-inclusive pricing. Wellmade distinguishes itself through vertical integrationβmanaging permitting, construction, and warranty support in-houseβand a commitment to sustainability, achieving 85% less waste in production while maintaining a five-year warranty. The company serves California homeowners seeking modern, modular housing solutions with typical ADU timelines of two to three months and shed installations completed in five to eight days on-site.
West Coast Building and Design
This San Diego-based builder offers comprehensive design-build services for accessory dwelling units, including granny flats, in-law suites, and backyard cottages throughout San Diego County. The firm distinguishes itself through deep knowledge of local ADU regulations and financing programs, including navigation of the city's up to $250,000 ADU loan program and waived development fee opportunities. Their full-service approach addresses both design and construction phases across all ADU types for homeowners in the region.