Attached ADU Builders in California

Frequently Asked Questions

Where can I find a vetted attached adu builder in California?

1-800-ADU-Pros lists pre-screened, CSLB-licensed attached adu specialists serving California. Browse the directory above to compare builders by specialty, license status, and recent local work, then request an intro to a verified builder that fits your lot and budget.

Are the attached adu builders in California licensed and vetted?

Yes. Every attached adu builder we list in California has an active, verified CSLB license (typically Class B General Building) and has cleared our red-flag screening before we'll introduce them. We're a referral and pre-qualification service, not a contractor, so the work is performed by the independent licensed builder we match you with.

Can I use a attached adu ADU in California as a short-term rental?

Not in Los Angeles. The city prohibits using an ADU as a short-term rental — any stay under 30 days (Airbnb-style) is not allowed. ADUs are intended for longer-term housing, and a verified builder in California can walk you through the local occupancy and rental rules before you build.