Vetted ADU Builders in Campbell, CA

Frequently Asked Questions

How do I find a trusted ADU builder in Campbell, CA?

1-800-ADU-Pros lists only vetted, CSLB-licensed ADU builders serving Campbell, CA. We pre-screen every builder for an active Class B license, bond, insurance, and verifiable recent local projects, so you can compare qualified pros instead of vetting strangers yourself. Tell us about your lot and we'll request an intro to a verified builder that fits your project.

Is 1-800-ADU-Pros a contractor?

No. 1-800-ADU-Pros is a referral and pre-qualification service, not a licensed contractor — we don't build anything ourselves. All construction is performed by independent, California-licensed builders, and each builder's CSLB license number is shown on their Campbell, CA profile so you can verify it yourself at cslb.ca.gov.

How do I avoid an unlicensed or scam ADU contractor in Campbell, CA?

Confirm the contractor's CSLB license number is active and classified for ADU work (usually Class B General Building), and never pay more than a $1,000 deposit up front — California caps a contractor's down payment at $1,000 or 10% of the contract, whichever is less. Every builder in our Campbell, CA directory has already cleared license verification and red-flag screening, so you're introduced to pros who've been checked first.

What types of ADUs can a Campbell, CA builder construct?

Builders in our Campbell, CA directory handle all four ADU types: detached backyard units, attached additions that share a wall with your home, garage or basement conversions, and junior ADUs (JADUs) carved from existing interior space. When you request an intro, we match you with a builder experienced in the specific type your lot and budget support.