How to check a restoration or mold company's license

Five places license mold work: the District of Columbia,¹ Florida,² Louisiana, for jobs of $7,500 or more,³ New York⁴ and Texas.⁵ Tennessee licenses mold remediation as the S-F classification of its contractor license, for projects of $25,000 or more.^6-7

In most other states we found no state license for mold work. Connecticut and New Hampshire require certain certifications instead, and Illinois has passed a registration law that isn't in effect yet. Which states license mold remediation has every state's rule and source.

A trade group's certification isn't a state license. It can still be worth asking about, and since October 1, 2026, Connecticut requires home improvement contractors who do mold remediation to attest to one.⁸

• The company's license or registration number, and the state body that issued it.
• For mold work in a state that licenses it, which license the company or its people hold: an assessor's (for testing and the plan) or a remediator's (for removal).
• In New York and Texas, who did the assessment. One license holder can't do both the assessment and the removal on the same property or project.^9-10
• For the rebuild, whether the company holds the state's contractor license or registration itself, or brings in another contractor who does.

The table links each state's own lookup, for mold licenses where the state has them and for the contractor license or registration that covers rebuilding. A few things to know before you search:

• In Florida and DC, a license is held by a person. A company shows up only through its licensed people, so ask for the name of the licensed assessor or remediator on your job.^{1, 11}
• New York's list is a data table. The Department of Labor's mold program points to the state's open data site, where the table of mold contractor licenses can be searched by business name or license number.⁴
• Tennessee's search can't filter by classification. Open the license record to see whether it carries S-F Mold Remediation.
• Some searches take a step first. In Florida's search, choose Search by License Type, then Mold-Related Services. In Texas, pick a mold license type before you search.

The table leaves out Colorado, Illinois, Indiana, Kansas, Kentucky, Maine, Missouri, New Hampshire, Ohio, Oklahoma, South Dakota and Wyoming. There, we found no state license or registration for mold work or for contractors who rebuild homes. In New York and Texas, we found a state mold license but none for the rebuild. Ask your city or county whether it licenses contractors.

A company whose vehicles carry cargo between states needs a USDOT number from the Federal Motor Carrier Safety Administration, and some states require one for trucks that stay inside the state.¹² Listings here built from the registry show the company's USDOT number and link to its federal record. A USDOT number isn't a restoration or mold license.

When you're ready, you can use the request form to reach restoration companies near you, then check each one here before you decide.