Do you need a mold inspector license in Illinois?
Illinois does not license or register mold inspectors. Most of Illinois falls in cold, humid-continental zone 5A (milder 4A in the south), so wintertime condensation on cold surfaces and basement dampness lead, with humid summers adding a secondary AC-condensation load. The Illinois Mold Remediation Registration Act (410 ILCS 105), as amended effective January 1, 2025, would require mold remediation providers to register with the Illinois Department of Public Health and hold a third-party certification — but IDPH states that the requirement is not in effect pending the adoption of rules, so nobody is required to register today. Illinois inspectors typically hold a voluntary IICRC or ACAC certification.
Is a license required?
Illinois does not license mold inspectors or assessors at the state level. Inspectors typically hold a voluntary certification (such as IICRC or ACAC) rather than a state license.
Official source
Illinois state agency mold guidance
Common questions
Do you need a license to be a mold inspector in Illinois?
No. Illinois issues no state mold-inspector license, so there is no state exam or registration to complete. Inspectors instead show competence through voluntary certification such as IICRC or ACAC and by following recognized industry standards.
Who regulates mold inspection in Illinois?
No single board regulates mold inspection in Illinois. The state's environmental and health agencies publish general mold guidance instead: https://dph.illinois.gov/.
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