Mold Remediation License Requirements by State
Five US jurisdictions license mold assessment and remediation: Texas, Florida, New York, Louisiana, and the District of Columbia. A sixth — Illinois — has enacted a registration law (410 ILCS 105) that is not yet in force pending rulemaking. Everywhere else, no mold-specific licence exists, and IICRC certification is the primary credential a consumer can verify.
Verified against primary statutes and agency sources, August 14, 2026. Two earlier industry claims — that Maryland, Virginia and Tennessee license mold work — are incorrect: none runs a mold licensing program.
| State | Status | What it means | Agency | Source | |
|---|---|---|---|---|---|
| Alabama | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Alaska | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Arizona | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Arkansas | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| California | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Colorado | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Connecticut | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Delaware | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| District of Columbia | Licence required | Licence required | Department of Energy and Environment (DOEE) | 20 DCMR §3201.2 | District of Columbia rules and lookup → |
| Florida | Licence required | Licence required | Department of Business and Professional Regulation (DBPR) | §468.8411, Fla. Stat. | Florida rules and lookup → |
| Georgia | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Hawaii | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Idaho | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Illinois | Pending | Registration law enacted, not yet in force | Illinois Department of Public Health | Mold Remediation Registration Act, 410 ILCS 105, as rewritten by P.A. 103-893 (effective 1 Jan 2025). IDPH states the requirements will not be in effect until pending rulemaking is adopted; proposed rules were published October 2025 and no registry exists yet. | |
| Indiana | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Iowa | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Kansas | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Kentucky | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Louisiana | Licence required | Licence required | State Licensing Board for Contractors (LSLBC) | La. R.S. 37:2150.1(4)(a)(iv) | Louisiana rules and lookup → |
| Maine | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Maryland | Not required | No mold licence — statewide standards due by 2027 | Maryland Department of the Environment | Maryland Tenant Mold Protection Act, 2025 Md. Laws ch. 539 (effective 1 July 2025) directs MDE to adopt uniform statewide mold assessment and remediation standards by 1 June 2027. It does not create a contractor licence. | |
| Massachusetts | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Michigan | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Minnesota | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Mississippi | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Missouri | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Montana | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Nebraska | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Nevada | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| New Hampshire | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| New Jersey | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| New Mexico | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| New York | Licence required | Licence required | NYS Department of Labor — Mold Program (Labor Law Art. 32) | N.Y. Labor Law §930(6) | New York rules and lookup → |
| North Carolina | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| North Dakota | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Ohio | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Oklahoma | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Oregon | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Pennsylvania | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Rhode Island | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| South Carolina | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| South Dakota | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Tennessee | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Texas | Licence required | Licence required | Texas Department of Licensing and Regulation (TDLR) | Tex. Occ. Code §1958.102(c) | Texas rules and lookup → |
| Utah | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Vermont | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Virginia | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Washington | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| West Virginia | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Wisconsin | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 | |
| Wyoming | Not required | No mold-specific licence | — | No mold assessment or remediation licence found in this state’s statutes or agency registers as of August 14, 2026 |
The one rule every licensing state shares
Can your inspector also be your remediator? It depends where you are. 4 of the 5 licensing jurisdictions bar the same party from assessing and remediating the same property or project: Texas, Florida, New York and Louisiana. District of Columbia does not — the rule there is disclosure of conflicts and a bar on working where the licensee has a financial interest, not a prohibition on holding both roles. DC is the exception worth knowing about: its regulator proposed exactly that prohibition as 20 DCMR §3204.5(j) in 2018 and dropped it from the final rule adopted 19 April 2021, reasoning that requiring separate professionals could be more burdensome and costly for landlords and could delay remediation for tenants. In the other 45 states no mold licence exists at all, so nothing prevents one firm doing both — which is precisely why insisting on the separation yourself is worth doing: a contractor who writes their own scope of work decides how much work they are going to be paid for.
Illinois: a sixth program is coming
Illinois rewrote its Mold Remediation Registration Act effective 1 Jan 2025 (P.A. 103-893): once operative, mold remediation providers must register with the state and hold an active third-party certification such as IICRC — the same credential this directory verifies today. But IDPH states the requirements "will not be in effect until the adoption of pending rulemaking"; proposed rules were published in October 2025 and no registry exists yet. We monitor this and will publish the rules when they take effect.
Related reporting
- Only Five U.S. Jurisdictions License Mold Work — and Three You've Heard Otherwise Don't — We checked every state against its own statutes. The common industry claim of “8–10 states” is wrong in both d
- Texas Changed Its Mold Law in 2025. Its Own Rulebook Still Disagrees With Itself. — S.B. 1255 rewrote the statutory definition of mold and repealed an exemption. The administrative rules haven't
Maryland: new tenant mold protections, statewide standards by 2027
Maryland does not license mold contractors — but the Maryland Tenant Mold Protection Act (2025 Md. Laws ch. 539, effective 1 July 2025) now requires landlords to assess reported mold within 15 days and remediate within 45, mandates mold disclosure at lease signing, and directs the Maryland Department of the Environment to adopt uniform statewide mold assessment and remediation standards by 1 June 2027. Maryland is the state most likely to become the seventh licensing jurisdiction.