Mold Licensing Requirements by State
Do you need a license to do mold work in your state? All 50 states plus DC, from a licensed Florida mold assessor and remediator. Last reviewed October 2026.
The short answer
Most states don’t license mold work at all. Only a handful do:
- Assessors and remediators both licensed: Florida, Texas, New York and Washington, D.C.
- Remediators licensed: Louisiana, Oregon (through a restoration endorsement) and Tennessee (on larger jobs).
- Assessors licensed: New Hampshire (residential).
- Registration or certification required: Illinois (remediation companies, since 2025) and Virginia (residential remediators, since 2024).
- Rules on the books, but no license: Kentucky, Maine and Connecticut.
- Everywhere else: no statewide mold license.
“No mold license” doesn’t mean “no rules.” Repair and rebuild work can still need a general contractor license, cities and counties can have their own requirements, and commercial clients will usually ask for insurance and certification no matter what the state requires.
State-by-state table
| State | What’s required for mold work | Who to check with |
|---|---|---|
| Alabama | No statewide mold license | Alabama Department of Public Health (guidance only) |
| Alaska | No statewide mold license | State health and environmental agencies (guidance only) |
| Arizona | No statewide mold license | Arizona Department of Health Services (guidance only) |
| Arkansas | No statewide mold license (old license law repealed in 2011) | Arkansas Department of Health (voluntary guidelines) |
| California | No statewide mold license; contractor license needed for most jobs over $1,000 | Contractors State License Board (CSLB) |
| Colorado | No statewide mold license | CDPHE |
| Connecticut | State mold standard, but no license | Department of Public Health (guidelines) |
| Delaware | No statewide mold license | Division of Public Health (guidance only) |
| District of Columbia | License required for mold assessors and remediators | DC Department of Energy and Environment (DOEE) |
| Florida | License required for mold assessors and remediators; one company can’t do both on the same job | Department of Business and Professional Regulation (DBPR) |
| Georgia | No statewide mold license | Department of Public Health (advisory only) |
| Hawaii | No statewide mold license | DCCA (no mold profession) |
| Idaho | No statewide mold license | Department of Health and Welfare (guidance only) |
| Illinois | Registration required for mold remediation companies (since 2025) | Illinois Department of Public Health (IDPH) |
| Indiana | No statewide mold license | Indiana Department of Health |
| Iowa | No statewide mold license | Iowa HHS (guidance only) |
| Kansas | No statewide mold license | KDHE |
| Kentucky | State remediation standards, but no license | Kentucky Attorney General (enforces) |
| Louisiana | License required for mold remediators | State Licensing Board for Contractors (LSLBC) |
| Maine | Disclosure rule if one company both assesses and remediates; no license | Maine CDC |
| Maryland | No statewide mold license (former program ended) | Maryland Department of the Environment |
| Massachusetts | No statewide mold license | Department of Public Health (guidance only) |
| Michigan | No statewide mold license | MDHHS (guidance only) |
| Minnesota | No statewide mold license | Department of Health (guidance only) |
| Mississippi | No statewide mold license | State Department of Health (information only) |
| Missouri | No statewide mold license | DHSS (guidance only) |
| Montana | No statewide mold license | DPHHS (guidance only) |
| Nebraska | No statewide mold license | DHHS (guidance only) |
| Nevada | No statewide mold license | Division of Public and Behavioral Health |
| New Hampshire | License required for residential mold assessors | Office of Professional Licensure and Certification (OPLC) |
| New Jersey | No statewide mold license | Department of Health (guidance only) |
| New Mexico | No statewide mold license | Regulation and Licensing Department |
| New York | License required for mold assessors, remediators and workers | NYS Department of Labor, Mold Program |
| North Carolina | No statewide mold license; general contractor rules may apply | NC Licensing Board for General Contractors |
| North Dakota | No statewide mold license | Department of Environmental Quality (guidance only) |
| Ohio | No statewide mold license | Ohio Department of Health (guidance only) |
| Oklahoma | No statewide mold license | State Department of Health (information only) |
| Oregon | Mold remediation tied to a restoration contractor endorsement | Construction Contractors Board (CCB) |
| Pennsylvania | No statewide mold license | Department of State |
| Rhode Island | No statewide mold license | RIDOH (guidance only) |
| South Carolina | No statewide mold license (bill pending) | None yet |
| South Dakota | No statewide mold license | Department of Health (information only) |
| Tennessee | Mold remediation contractor classification on larger jobs | Board for Licensing Contractors |
| Texas | License required for mold assessors and remediators | Texas Department of Licensing and Regulation (TDLR) |
| Utah | No statewide mold license | DOPL |
| Vermont | No statewide mold license | Department of Health (guidance only) |
| Virginia | Certification required for residential mold remediators (since 2024) | Enforced under the Virginia Consumer Protection Act |
| Washington | No statewide mold license | Department of Health (guidance only) |
| West Virginia | No statewide mold license | Office of Environmental Health Services (guidance only) |
| Wisconsin | No statewide mold license | Department of Health Services (guidance only) |
| Wyoming | No statewide mold license | No state mold program |
Compiled from public state licensing board, health department and statute information. Laws change: South Carolina and other states have bills pending. Always confirm current rules with your state agency before you take mold work.
License vs. certification
A license is issued by the state and can be taken away. A certification, like the IICRC’s mold remediation credential, shows you were trained to an industry standard. In the states with no license, certification is what homeowners, property managers and adjusters look for, and in Virginia it’s now required for residential remediation.
My advice: start with water
I’m a licensed mold assessor and remediator in Florida, one of the strictest states, and I’ve run 5,000+ water jobs since 2012. Wherever you live, the smart path is the same: start with water damage jobs, build your systems and referral partners, then step up into mold once you know your state’s rules and have the right insurance. Most mold starts with water anyway.
General information, not legal advice. Licensing rules change; confirm current requirements with your state’s licensing agency.
