109 Best ADU Builders in San Diego, California
Verified ADU contractors and builders in San Diego, CA
Showing 61–90 of 109 listings — Page 3 of 4
JL Building Group
Johnny General Contractor ADU
Kanna Construction & Remodeling
Lars Remodeling & Design
Leon Design & Build, Inc.
Lumina Builders Inc.
MEE Builders
Millan Construction | ADU & Remodeling
Modern Granny Flat San Diego
Murray Lampert Design, Build, Remodel
New Age Design and Build
Next Gen Builders
Oasis Renovation & New Construction
OneStop ADU
Specializing in accessory dwelling unit construction throughout San Diego, this contractor delivers complete ADU solutions from design consultation through final build-out. Whether you're looking to add rental income, guest housing, or multi-generational living space to your property, they handle every phase of the development process.
Organic ADU
PBH Builders
Peak Builders & Roofers of San Diego
Precision General Contracting
PremierGarage of North San Diego
Prestige Design & Build, San Diego
Pro Builders and Design
Reliable Standard ADU Builders
REMCON Design Build | San Diego Remodeling Contractor
Revive Design & Build
Ritz ADU Design Build
RL Remodeling
Room & ADU Builders San Diego
San Bernardino ADU Contractors
San Diego Accessory Dwelling Unit Contractor
San Diego ADU Specialists
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.