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Certified radon testers and mitigators in New Jersey

40 certified radon testers and mitigation contractors in New Jersey, from the state's official list or the national NRPP directory.

7 cities & counties40 certified pros

Pros in this state come from the NRPP national certification directory (checked Oct 28, 2026). Get Radon Quotes is independent and not affiliated with NRPP. Some states also require a state license, so confirm with your state radon office before you hire. Your state radon office.

Counties in New Jersey A–Z

Smaller counties in New Jersey

Counties with only a few listings so far, grouped by county.

Burlington County 1

Cumberland County 1

Essex County 1

Hunterdon County 1

Mercer County 1

Middlesex County 1

Passaic County 1

Somerset County 2

Sussex County 2

Warren County 1

Get free quotes from up to 3 certified radon pros near New Jersey

Tell us what you need and where. We send your request to up to 3 certified pros near you who offer that service, and they contact you directly.

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Prefer to choose yourself? Every certified pro is listed above with their phone number.