Do you need a mold inspector license in New Hampshire?
New Hampshire does not license or register mold inspectors. Its cold humid-continental climate (IECC 6A, milder 5A in the south, 7 in the highlands) makes winter cold-surface and interstitial condensation, ice damming, and ventilation shortfalls the leading moisture drivers. The New Hampshire Department of Health and Human Services publishes mold guidance and the state issues no mold credential of its own — but since 2016 RSA 310-A:189-b has required anyone performing residential mold assessment for payment to hold an accredited third-party certification, so certification in New Hampshire is compulsory, not a professional preference.
Is a license required?
New Hampshire does not license mold inspectors or assessors at the state level. Certification is not optional here. RSA 310-A:189-b provides that “no person shall perform residential mold assessment services for remuneration unless that person possesses a valid national third party certification for mold assessment”, and it defines mold assessment to include inspecting a dwelling, developing a remediation protocol, and collecting a sample for analysis. The certification must come from a body accredited by ANSI, CESB, NCCA or an equivalent ISO-compliant accreditor. Offering the service without one is a violation, or a class B misdemeanor for a business. New Hampshire issues no license of its own — it requires the industry credential instead.
Official source
New Hampshire state agency mold guidance
Common questions
Do you need a license to be a mold inspector in New Hampshire?
New Hampshire issues no state mold-inspector license, so there is no state exam to sit — but that does not mean no credential is required. Certification is not optional here. RSA 310-A:189-b provides that “no person shall perform residential mold assessment services for remuneration unless that person possesses a valid national third party certification for mold assessment”, and it defines mold assessment to include inspecting a dwelling, developing a remediation protocol, and collecting a sample for analysis. The certification must come from a body accredited by ANSI, CESB, NCCA or an equivalent ISO-compliant accreditor. Offering the service without one is a violation, or a class B misdemeanor for a business. New Hampshire issues no license of its own — it requires the industry credential instead.
Who regulates mold inspection in New Hampshire?
No single board regulates mold inspection in New Hampshire. The state's environmental and health agencies publish general mold guidance instead: https://www.dhhs.nh.gov/.
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