Use our listings to find an ADU Builder and take it from there or ADU HQ can help you select and work with the best ADU Builder on your behalf. For more information please see the ADU HQ Builder Coordination Service page.

Criteria for selecting the Builders listed on this site:

  • Completed ADU Projects or previous experience building similar structures.
  • An active interest in building ADUs.
  • Familiarity with the current ADU Local Regulations.
  • Good reviews on Houzz, Diamond Certified, HomeAdvisor, AngiesList, Yelp, BBB, etc.
  • Licensed contractor
  • Bonded and insured
  • Provides services in the SF Bay Area

All ADU Builders are contacted by ADU HQ staff and advisors and we make every effort to ensure accuracy. However, ADU HQ does not endorse any of the Builders on our lists and does not guarantee the accuracy of information provided. You are encouraged to contact the builder directly in order to verify their credentials and experience.

Know a stellar ADU Builder not in our listings?

Help out those considering building an ADU. We are always searching for the best builders so if you know one please use the form at the bottom of this page to tell us. If we find your submission to be right for this site’s visitors we will add it to this list.