Find Top ADU Builders in California
Compare top-rated contractors in Los Angeles, San Diego, San Jose, and across the state. Filter by location, ratings, and specialties.
Found matching your criteria
2 Brothers ADU Company
A & M Industries Inc
A T.E.E.M. Electrical Engineering, Inc.
Find top-rated ADU builders in California through our curated directory. We connect you with verified granny flat builders across the entire state, including major hubs like Los Angeles, San Diego, and San Jose.
Listed ADU contractors are professionals serving California homeowners. Use our advanced filters to find builders who specialize in your specific project type, from garage conversions to custom detached units.
Selection Criteria
When selecting a builder, verify their CSLB license, check for worker's compensation insurance, and ask for references from past ADU clients. Experience with local permitting offices is also a key factor for a smooth project.
Why Choose California ADU Contractors?
California has some of the most experienced ADU contractors in the nation, thanks to the state's progressive ADU laws and high demand for affordable housing. When searching for granny flat contractors in California, it's essential to work with professionals who understand local building codes, zoning regulations, and permit requirements.
California has some of the most experienced ADU builders in the nation, thanks to the state's progressive ADU laws and high demand for affordable housing. When searching for granny flat builders in California, it's essential to work with licensed contractors who understand local building codes, zoning regulations, and permit requirements.
Our directory includes ADU contractors specializing in various project types:
Whether you're in Los Angeles, San Francisco, San Diego, or any other California city, our directory helps you find qualified ADU builderswho can help maximize your property's value and rental income potential.
Detached ADUs
Standalone units in your backyard
Attached ADUs
Units connected to your main home
Garage Conversions
Transforming existing garages into livable spaces
Junior ADUs (JADUs)
Smaller units within your existing home
Custom ADU Designs
Tailored solutions for unique properties
Frequently Asked Questions
Common questions about hiring an ADU builder
Look for a licensed contractor with specific experience building ADUs in your local area. Ask for references, view their past projects, and verify their license with the CSLB. It is also important to get detailed quotes from multiple builders to compare costs and timelines.