Best ADU Builders in Brentwood, CA (2026)
Building an ADU in Brentwood? Hillside foundations and luxury remodels across Brentwood. Here's how to choose the right builder, what an ADU costs here, and reputable LA-area ADU builders to compare — including us.
How to choose an ADU builder in Brentwood
- CSLB license — active General Building (B) license; verify the number at cslb.ca.gov.
- Bonded & insured — contractor's bond plus liability and workers'-comp coverage.
- Fixed written pricing — a real proposal before demo, not a moving number.
- Permits in-house — they handle the LADBS submittal and inspections for you.
- Recent reviews & portfolio — Google, Yelp, Houzz, BuildZoom; ADU projects near Brentwood.
Top ADU builders serving Brentwood
At a glance
| Builder | Service area | Focus |
|---|---|---|
| Home Make Over, Constructor Inc. | Reseda · Brentwood & Greater LA | ADU · general contractor · fixed pricing |
| NEO Builders ADU | San Fernando Valley | ADU and garage-conversion specialist serving the San Fernando Valley (CSLB #1114778) |
| LA Family Builders | Woodland Hills / Greater LA | Full-service design-build firm handling ADU design, permits, and construction under one roof |
| Nagar Builders | Los Angeles / SFV | General building contractor with a focus on current ADU safety-code compliance (CSLB #1069052) |
| CALI ADU | Los Angeles | Design-build company known for fixed-price, pre-designed ADU plans and cost transparency |
| South Land Remodeling | LA / San Fernando Valley | ADU contractor and architect with 20+ years in new construction and renovations |
| Red Stag Construction | Los Angeles | Residential contractor (est |
Competitor details are from public sources and may change — verify directly. Listing here is not an endorsement by those companies.
ADU cost in Brentwood
Most Brentwood ADUs run about $150,000–$400,000 (~$300–$450/sq ft); garage conversions start lower. See our full Los Angeles ADU cost guide for the breakdown.
FAQ
Who are the best ADU builders in Brentwood?
Brentwood homeowners have several strong LA-area options. This guide lists Home Make Over alongside other reputable builders so you can compare license, service area, and specialty. Start with a licensed, bonded, and insured contractor who gives fixed written pricing.
How much does an ADU cost in Brentwood?
Most Brentwood ADUs run about $150,000–$400,000 (roughly $300–$450/sq ft); garage conversions start lower. Home Make Over gives fixed written pricing after a free site visit.
How do I choose an ADU builder in Brentwood?
Verify the CSLB license, confirm bonding and insurance, read recent reviews, insist on fixed written pricing, and make sure they handle LADBS permits and inspections in-house.