Mold Remediation & Assessment in Washington
124 certified mold remediation firms on file in Washington. Credentials below are verified against IICRC's Certified Firm registry.
Cities with 3+ certified firms
Also served (1–2 firms)
Anacortes, Bellevue, Bellingham, Chelan, Federal Way, Snohomish, Seatac, Ridgefield, Wenatchee, Yakima, Walla Walla, Sumner, Moses Lake, Mount Vernon, Spokane Valley, Ellensburg, Clarkston, Chehalis, Brier, Centralia, Arlington, Bothell, Aberdeen, Edmonds, Fircrest, Granite Falls, Kennewick, Kirkland, Hoquiam, Kenmore, Oak Harbor, Mukilteo, Mountlake Terrace, Monroe, Maple Valley, Mercer Island, Lakewood, Lynden, Sequim, Rochester
What Washington mold remediation firms are certified in
Certification counts across the 124 Washington 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 | Washington firms |
|---|---|---|
| WRT | Water Damage Restoration Technician | 123 |
| AMRT | Applied Microbial Remediation Technician | 122 |
| ASD | Applied Structural Drying Technician | 101 |
| FSRT | Fire and Smoke Damage Restoration Technician | 99 |
| OCT | Odor Control Technician | 73 |
| CCT | Carpet Cleaning Technician | 66 |
116 of these firms hold three or more certifications; 94 appear in two independent registries and carry a cross-verified marker; 35 operate under a national franchise brand, which is separately owned and separately credentialled from the brand itself.
Every Washington firm we hold a record for, A–Z by city →
Mold Remediation in Washington: common questions
Is mold remediation licensed in Washington?
Washington 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 Washington, the credentials to check are IICRC certification, general contractor licensing where applicable, and insurance.
What certifications do Washington mold remediation firms actually hold?
Across the 124 Washington firms on file for this work, the most common credentials are WRT (Water Damage Restoration Technician) held by 123 firms, AMRT (Applied Microbial Remediation Technician) held by 122 firms, ASD (Applied Structural Drying Technician) held by 101 firms, FSRT (Fire and Smoke Damage Restoration Technician) held by 99 firms. 116 hold three or more certifications. Certification describes verified training rather than the services a firm chooses to advertise.
How were these Washington firms verified?
Every certification was checked against IICRC's own Certified Firm registry, not against the firm's marketing. 94 of the 124 appear in two independent registries and carry a cross-verified marker. Checked August 14, 2026.
Which Washington cities have the most mold remediation firms?
Vancouver leads with 11, followed by Kent (7), Tacoma (6), Woodinville (6). We build a page wherever a city has three or more certified firms; smaller markets are listed below that without their own page.