Mold remediation contractors based in California

We list 3 mold remediation contractors based in California so far. We only list companies found on an official license roster, and some states don't license this trade. See all 858 contractors based in California, or search nearby states.

Each listing shows the board that issued its license, and the license number when the board publishes one.

Open a city or a company to check the issuing board's record.

What does it cost? National figures from public sources, with citations.

Guides Homeowner questions, with the agency sources.

Cities in California

Other services for companies based in California

Nearby states

Arizona1

Licensing in California

Mold licensing in California

California does not have a state license, training or certification requirement for mold inspectors or remediators, so a mold-specific credential is not something the state can confirm. Work that counts as construction or improvement of $500 or more in labor and materials generally needs a California contractor license, which you can look up on the Contractors State License Board site. Some companies hold voluntary national credentials. Ask for details in writing and check the agencies' sites for current requirements.

Official lookup (opens in a new tab)None for mold. (CSLB licenses general contractors; CDPH publishes mold guidance.) (opens in a new tab)

Sources

Last reviewed November 2026. Rules change, so confirm with the agency.