Mold Remediation & Assessment in Ohio
123 certified mold remediation firms on file in Ohio. One of them holds a mold licence issued by another state — worth knowing, but there is no Ohio licence to check. Credentials below are verified against IICRC's Certified Firm registry.
Cities with 3+ certified firms
Also served (1–2 firms)
Chagrin Falls, Celina, Dover, Holland, Hudson, Hilliard, Lewis Center, Westerville, North Canton, Toledo, Youngstown, Mansfield, Bellefontaine, Beloit, Akron, Chardon, Carlisle, Brookpark, Canton, Delaware, Columbiana, Defiance, Dayton, Oh 4510, Englewood, Eastlake, Berea, Blue Ash, Beavercreek, Bedford Heights, Auburn Twp, Bay Village, Kent, Fairfield Township, Fayetteville, Galloway, Fairfield, East Liverpool, Loudonville, Lorain, Middletown
What Ohio mold remediation firms are certified in
Certification counts across the 123 Ohio 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 | Ohio firms |
|---|---|---|
| WRT | Water Damage Restoration Technician | 121 |
| AMRT | Applied Microbial Remediation Technician | 120 |
| ASD | Applied Structural Drying Technician | 107 |
| FSRT | Fire and Smoke Damage Restoration Technician | 95 |
| OCT | Odor Control Technician | 74 |
| CCT | Carpet Cleaning Technician | 56 |
116 of these firms hold three or more certifications; 0 appear in two independent registries and carry a cross-verified marker; 44 operate under a national franchise brand, which is separately owned and separately credentialled from the brand itself.
Ohio mold law: tenant rights, disclosure & insurance →
Every Ohio firm we hold a record for, A–Z by city →
Mold Remediation in Ohio: common questions
Is mold remediation licensed in Ohio?
Ohio 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 Ohio, the credentials to check are IICRC certification, general contractor licensing where applicable, and insurance.
What certifications do Ohio mold remediation firms actually hold?
Across the 123 Ohio firms on file for this work, the most common credentials are WRT (Water Damage Restoration Technician) held by 121 firms, AMRT (Applied Microbial Remediation Technician) held by 120 firms, ASD (Applied Structural Drying Technician) held by 107 firms, FSRT (Fire and Smoke Damage Restoration Technician) held by 95 firms. 116 hold three or more certifications. Certification describes verified training rather than the services a firm chooses to advertise.
How were these Ohio firms verified?
Every certification was checked against IICRC's own Certified Firm registry, not against the firm's marketing. 0 of the 123 appear in two independent registries and carry a cross-verified marker. Checked August 14, 2026.
Which Ohio cities have the most mold remediation firms?
Cincinnati leads with 11, followed by Dayton (10), Columbus (9), Brunswick (3). We build a page wherever a city has three or more certified firms; smaller markets are listed below that without their own page.