109 Best ADU Builders in San Diego, California
Verified ADU contractors and builders in San Diego, CA
Showing 91–109 of 109 listings — Page 4 of 4
San Diego Build & Remodel
San Diego Building and Renovation
San Diego Home Extensions
San Diego Service Group
SD Build Co
SD CCS - Construction & Consulting Services
Sheiner Construction | Whole House Remodeling in San Diego
Shermans Builders Inc
Shiro Builders Group
Snap ADU
Specializing in accessory dwelling unit construction and conversions throughout San Diego, this contractor transforms properties into multi-unit homes with expert design and permitting expertise. From new ADU builds to creative garage conversions, they deliver turnkey solutions that maximize your property's potential and rental income.
SOL Design & Build
Tate & Son, Inc.
The Right Guys Construction, Inc.
TR Construction
Triumph Remodeling
TrueBuild ADU
Upgrade Spaces
Vista ADU Builders
Y9 Construction
Frequently Asked Questions — ADU Builders in San Diego
How much does it cost to hire an ADU builder in San Diego?
ADU construction costs in San Diego, California vary widely depending on size, type, and site conditions. Detached ADUs typically range from $150,000–$400,000+, while garage conversions and attached ADUs can be more affordable. Contact multiple builders in San Diego to get accurate quotes for your specific project.
How long does it take to build an ADU in San Diego?
In San Diego, the ADU construction timeline typically ranges from 6 to 18 months from permit application to move-in. Permitting alone can take 2–6 months depending on California local regulations. Prefab and modular ADUs often have faster timelines than site-built units.
Do I need a permit to build an ADU in San Diego?
Yes, a building permit is required for ADU construction in San Diego, California. Your ADU builder will typically handle the permit application as part of their service. California has adopted streamlined ADU permitting laws in recent years, which may reduce wait times.
What types of ADUs can be built in San Diego?
Common ADU types in San Diego include detached ADUs (backyard cottages), attached ADUs, garage conversions, basement conversions, and prefab/modular ADUs. The best type for your property depends on lot size, zoning, and budget. A local San Diego ADU builder can advise on what's allowed on your specific parcel.