Mold Remediation & Assessment in New Hampshire
18 certified mold remediation firms on file in New Hampshire. One of them holds a mold licence issued by another state — worth knowing, but there is no New Hampshire licence to check. Credentials below are verified against IICRC's Certified Firm registry.
Cities with 3+ certified firms
Also served (1–2 firms)
Dover, Portsmouth, Merrimack, Belmont, Bow, Bedford, Amherst, Epping, Canterbury, Nashua, Hollis, North Swanzey, Salem, W Nottingham, Westmoreland
What New Hampshire mold remediation firms are certified in
Certification counts across the 18 New Hampshire firms on file for this work. These are the credentials on record with the issuing body — not what the firms advertise.
| Credential | What it covers | New Hampshire firms |
|---|---|---|
| AMRT | Applied Microbial Remediation Technician | 17 |
| WRT | Water Damage Restoration Technician | 17 |
| ASD | Applied Structural Drying Technician | 10 |
| FSRT | Fire and Smoke Damage Restoration Technician | 8 |
| OCT | Odor Control Technician | 7 |
| TCST | Trauma and Crime Scene Technician | 6 |
14 of these firms hold three or more certifications; 1 appear in two independent registries and carry a cross-verified marker; 7 operate under a national franchise brand, which is separately owned and separately credentialled from the brand itself.
Every New Hampshire firm we hold a record for, A–Z by city →
Mold Remediation in New Hampshire: common questions
Is mold remediation licensed in New Hampshire?
New Hampshire does not run a mold-specific licensing program. Only five US jurisdictions do (Texas, Florida, New York, Louisiana and the District of Columbia; Illinois has enacted a program that is not yet in force). In New Hampshire, the credentials to check are IICRC certification, general contractor licensing where applicable, and insurance.
What certifications do New Hampshire mold remediation firms actually hold?
Across the 18 New Hampshire firms on file for this work, the most common credentials are AMRT (Applied Microbial Remediation Technician) held by 17 firms, WRT (Water Damage Restoration Technician) held by 17 firms, ASD (Applied Structural Drying Technician) held by 10 firms, FSRT (Fire and Smoke Damage Restoration Technician) held by 8 firms. 14 hold three or more certifications. Certification describes verified training rather than the services a firm chooses to advertise.
How were these New Hampshire firms verified?
Every certification was checked against IICRC's own Certified Firm registry, not against the firm's marketing. 1 of the 18 appear in two independent registries and carry a cross-verified marker. Checked August 14, 2026.