How should I use the permit guidance?
Each city guide links to the state and local sources behind its summary. Published review times cover only the stage a city names, not the full project, so confirm the current process for your property.
California ADU Directory
Compare ADU builders before you sign a contract.
Compare public builder information, check current city guidance, and submit one project brief for manual review.
Browse Los Angeles builders Run an ADU company? See builder plansHow It Works
01
Compare local builders
Browse public company information, service areas, and builder websites before you start calling around.
Explore Los Angeles02
Check rules and costs
Follow the linked city and state guidance, then compare itemized bids and current local leases for your property.
Open the cost guide03
Request manual review
We manually compare your city, ADU type, project stage, and budget with builders' published service areas and ADU focus. We then follow up by email. If you consent, we may share your brief with builders that appear relevant. A request does not guarantee a builder match or response.
Request a builder shortlistHomeowner FAQ
Know what to verify before you compare builders.
Straight answers on permits, bids, listing checks, and what happens when you request a shortlist.
How should I compare ADU costs?
Use the same project brief to request itemized bids from several builders. Compare design, permits, utilities, site work, construction, finishes, exclusions, and contingency before relying on a total.
Open the California ADU cost guideHow are builders included in the directory?
Listings are selected from public company information showing ADU work or a relevant service area. Inclusion is not an endorsement or a live license check. Only a listing with a visible Verified badge has completed our license, insurance, and portfolio document review.
Does a listing mean the contractor's license is active?
No. License and insurance status can change, and any listing without a visible Verified badge has not completed this document-review step. Confirm the contractor's current license, insurance, references, and project scope before you sign.
How current is the information?
City guides link to the official state and local sources behind their rule summaries, while builder service areas come from public company information. These are research starting points, not live government records. Rules, fees, prices, and availability can change.
What happens after I request a shortlist?
The request is free and carries no obligation. We manually compare your city, ADU type, project stage, and budget with builders' published service areas and ADU focus. We then follow up by email. If you consent, we may share your brief with builders that appear relevant. A request does not guarantee a builder match or response.
Markets
Source-backed profiles have both linked local-service evidence and a dated CSLB record. The count is not a paid Verified badge or an endorsement, and license status can change.
Live directory
Los Angeles, CA
Compare 71 Los Angeles ADU builder listings, including 3 with sourced local service and dated CSLB checks, then review design, permits, utilities, and site fit
Builders
71
Rule sources
Official links
Source-backed
3 profiles
Match review
Manual
Live directory
Long Beach, CA
Compare 3 builders with sourced Long Beach service evidence and CSLB records checked August 7, 2026, plus design, utility, and permit paths
Builders
3
Rule sources
Official links
Source-backed
3 profiles
Match review
Manual
Live directory
Pasadena, CA
Compare 3 builders with sourced Pasadena service evidence and CSLB records checked August 7, 2026, plus permit, utility, and design paths
Builders
3
Rule sources
Official links
Source-backed
3 profiles
Match review
Manual
Live directory
Sacramento, CA
Compare 3 builders with sourced Sacramento service evidence and CSLB records checked August 8, 2026, plus city plan, permit, and utility guidance
Builders
3
Rule sources
Official links
Source-backed
3 profiles
Match review
Manual
Live directory
San Diego, CA
Compare 3 builders with sourced San Diego service evidence and CSLB records checked August 8, 2026, plus city permit, coastal, and preapproved-plan guidance
Builders
3
Rule sources
Official links
Source-backed
3 profiles
Match review
Manual
Live directory
Glendale, CA
Compare 3 ADU builders with sourced Glendale service and dated CSLB license checks, then review design, utilities, permits, and site fit
Builders
3
Rule sources
Official links
Source-backed
3 profiles
Match review
Manual
For Builders
Want more visibility with homeowners already researching ADUs?
Builder plans add clearly labeled placement and expanded service details. A Verified badge appears only after document review.