Radon Contractor Licensing in Washington
Washington licensing
Washington does not issue a state license or certification specifically for radon mitigation professionals. The Washington State Department of Health radon program tells homeowners to hire a certified radon professional and links to the National Radon Proficiency Program (NRPP) and National Radon Safety Board (NRSB) search tools. A general contractor performing the installation still has to meet Washington Department of Labor and Industries contractor registration requirements.
Washington State Department of Health, Radon Program (official source) →
We don't have licensed contractor listings for Washington yet.
We're adding states as their licensing boards publish public, scrapeable data. Check back, or use the EPA link above to find your state's radon program directly.