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RADON411

Radon professionals in New Jersey

Who tests and fixes radon in New Jersey, what New Jersey's own program says about licensing, and how to check a credential before you hire.

Updated October 2, 2026

Radon professionals listed for New Jersey

2 professionals in New Jersey.

On this page: 1 mitigation, 1 testing

Mitigation 1

Testing 1

Located in New Jersey, licensed by another state

These businesses have an address in New Jersey, and another state's registry lists them. That does not mean New Jersey licenses them: check with New Jersey's radon program before hiring one for work here.

13 professionals located in New Jersey and listed by another state. Showing 1 to 1213.

On this page: 2 testing and mitigation, 3 mitigation, 78 testing

Testing and mitigation 2

Mitigation 3

Testing 78

Show 1 more on this page

By city

12 cities in New Jersey with a listed business address.

Every radon business listed in New Jersey, A to Z (15)

Short answer

Radon professionals in New Jersey, in brief

Radon411 lists 2 radon businesses for New Jersey: 1 listed for radon measurement (testing) and 1 for mitigation. New Jersey's radon program says the state licenses or certifies radon professionals.

Listed
2
Businesses on New Jersey's list here
Testing
1
Listed for radon measurement
Mitigation
1
Listed for mitigation
Both services
0
Listed for testing and mitigation

The rule

Does New Jersey license radon professionals?

Yes. New Jersey's radon program page, checked on September 25, 2026, says:

By law, all businesses and professionals conducting radon testing and mitigation in New Jersey must be certified by the DEP.
Radon Section, read September 25, 2026

EPA's state contacts page lists New Jersey among the states with radon credentialing programs. Licensing is done by the state, not by the national programs, and EPA requires states that receive radon grants to give the public a list of only those providers credentialed by the state or by NRPP or NRSB.

State program

New Jersey's radon program

The state's own radon program: the place to ask who may work in the state.

Radon Section

New Jersey Department of Environmental Protection

Its page covers free or discounted test kits, who may test and fix radon in the state and the disclosure rule for home sales.

Phone 800-648-0394

Visit the program's page (opens in a new tab)Read September 25, 2026

Nearby

Listed professionals in states next to New Jersey

A business licensed in a neighboring state is licensed there, not necessarily in New Jersey. Check New Jersey's rule above before you hire one.

Before you hire

How to check a credential in New Jersey

  1. New Jersey's own list

    Start with the New Jersey Department of Environmental Protection. Licensing is done by the state, so its list or search says who may legally work in New Jersey.

  2. NRPP's search

    The National Radon Proficiency Program's search finds its Certified Mitigation Specialists and Certified Measurement Professionals by area, by name, or by the 6-digit NRPP ID number a professional can give you.

  3. NRSB's search

    The National Radon Safety Board's search finds a professional in your area, or confirms that a named professional is NRSB certified.

  4. The ID card

    The programs usually issue a photo ID card showing the holder's qualifications and its expiry date. Ask to see it, and if in doubt, check with the body that issued it.

Hiring

Hiring in New Jersey

A tester

1 business is listed for testing here. Ask for the credential and ID card, how the test will be guarded against interference, and when the report will come. EPA recommends an independent, qualified tester for the test after a system is installed.

What a professional test involves

A mitigation contractor

1 business is listed for mitigation here. Get more than one estimate, contact references, and ask for a written proposal and a contract before any work starts.

How to choose a contractor

Questions

Common questions about New Jersey

Does New Jersey require radon professionals to be licensed?

Yes. New Jersey's radon program page, checked on September 25, 2026, says.

EPA's state contacts page lists New Jersey among the states with radon credentialing programs.

By law, all businesses and professionals conducting radon testing and mitigation in New Jersey must be certified by the DEP.
How do I find a certified radon mitigator in New Jersey?

Radon411 lists 1 business for mitigation in New Jersey, each with the source that lists it.

Your state radon program can help you find qualified professionals in the state, and NRPP and NRSB, the two national proficiency programs EPA names, each publish a search of the professionals they certify.

Mitigation listings for New JerseyHow to choose a mitigation contractor

Who tests for radon in New Jersey?

Radon411 lists 1 business for radon measurement in New Jersey.

A qualified radon tester is very often a home inspector, and your state radon office can give you its approved list of radon testing companies.

Testing listings for New JerseyWhat a professional radon test involves

Does New Jersey offer free or discounted radon test kits?

Radon Section's page, checked on September 25, 2026, says:

Check with your municipal or county health department for free radon test kits or purchase a test kit from a hardware store or a NJ certified radon business.

Free and discounted test kits by state

Does New Jersey have a radon disclosure rule for home sales?

Radon Section's page, checked on September 25, 2026, says:

Under the law, the seller must provide the buyer, at the time the contract of sale is entered into, with a copy of the results of the radon test and evidence of any mitigation or treatment.

Every state's program, licensing and disclosure rule

Is every business on this page licensed in New Jersey?

No listing here is a license. The first list holds businesses New Jersey's own registry lists, or that confirmed their own listing; each card names its source.

13 businesses with an address in New Jersey appear in a separate list because another state's registry lists them. That does not mean New Jersey licenses them.

How listings are verified. Run a radon business in New Jersey? Get Featured.

Next steps

Where to go next