AE Design & Build
AE Design & Build. Construction company. 4124 N Bonita St, Spring Valley, CA 91977
Looking for the best ADU contractors in San Diego, California? Our directory features 74 vetted adu contractors serving the San Diego area. Whether you're planning a new ADU construction, garage conversion, or backyard cottage, find the right builder for your project.
AE Design & Build. Construction company. 4124 N Bonita St, Spring Valley, CA 91977
ADUs & Garage Conversions | Sprawl Design. Architecture firm. 1893 Lorient Pl, Chula Vista, CA 91913
Primetime ADU. Construction company. Closed · Opens 9.00 am Mon
Block Contracting. Custom home builder. Closes soon · 7 PM
Cal Renovation – Legacy. Precision. Progress. With over 60 years of combined family experience in the construction industry, Cal Renovation brings craftsmanship, integrity, and innovation to every project.
US Pacifica Builders. General contractor. 9557 Candida St Suit A, San Diego, CA 92126, United States
Johnny General Contractor ADU. General contractor. 6378 Del Cerro Blvd, San Diego, CA 92120, United States
One Hat Construction - ADU Home Kitchen Bath Remodeling. Contractor. Closed · Opens 8 AM Mon
Fortune ADU. Contractor. 9810 Scripps Lake Dr, San Diego, CA 92131, United States
ADU Design & Build by SD CCS. General contractor. Closes soon · 6:30 PM
Specializing in ADU construction and related services in San Diego, CA.
San Diego ADU Solutions. Construction company. Closed · Opens 8 AM Mon
IL Total Design and Build. Contractor. 9655 Granite Ridge Dr #200, San Diego, CA 92123, United States
ADU San Diego - ADSD. General contractor. Closed · Opens 8 AM Mon
Room & ADU Builders San Diego. General contractor. 10715 Tierrasanta Blvd #A104, San Diego, CA 92124, United States
Crest Backyard Homes is dedicated to helping homeowners maximize their property’s potential. It is our passion and our purpose to help people navigate the ADU process and provide the most comprehensive set of options for your property's ADU needs.
Hauser ADU. Modular home builder. 845 15th St Floors 1-4, San Diego, CA 92101, United States
GW Construction. Construction company. 4694 Alvarado Canyon Rd, San Diego, CA 92120, United States
Fabrick Construction. Contractor. 2811 Dickens St ste b203, San Diego, CA 92106, United States
Accessory Dwelling Unit Contractor - Room addition. General contractor. Open · Closes 8 PM
San Diego is one of the top markets for accessory dwelling units in California. With growing demand for affordable housing, ADU construction in San Diego offers homeowners an excellent opportunity to add living space, generate rental income, or house family members. Our curated list of adu contractors in San Diego helps you find experienced professionals who understand local building codes, zoning regulations, and permit requirements.
ADU construction costs in San Diego typically range from $150,000 to $350,000 depending on size, design, and finishes. Garage conversions are generally less expensive ($80,000–$150,000), while custom-built detached ADUs can cost more. Get free quotes from our listed adu contractors to compare prices.
Yes, ADU construction in San Diego requires building permits. California has specific ADU regulations, and local zoning laws may have additional requirements. Our listed builders can help you navigate the permitting process.
ADU construction timelines in San Diego typically range from 4–12 months, depending on the project type. Prefab ADUs can be installed in 2–4 months, while custom builds may take 8–12 months including design and permitting.