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Radon professionals in Montana

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

Updated October 2, 2026

Radon professionals listed for Montana

None that Montana licenses yet. The businesses below have an address here and another state licenses them.

No business licensed by Montana is listed here yet.

Located in Montana, licensed by another state

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

1 professional located in Montana and listed by another state.

By city

1 city in Montana with a listed business address.

Every radon business listed in Montana, A to Z (1)

Short answer

Radon professionals in Montana, in brief

No business that Montana itself licenses or certifies is listed on Radon411 yet. Montana's radon program says the state does not license or certify radon professionals.

1 business with an address in Montana appears in a separate list because another state's registry lists it. That does not mean Montana licenses it.

The rule

Does Montana license radon professionals?

No. Montana's radon program page, checked on October 3, 2026, says:

Montana DEQ does not certify or require proof of certification for the contractors listed.
Radon Control Program, read October 3, 2026

Montana is not on the list of states with radon credentialing programs that EPA's state contacts page publishes. 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

Montana's radon program

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

Radon Control Program

Montana DEQ

Its page covers free or discounted test kits and who may test and fix radon in the state.

Phone 1-800-546-0483

Visit the program's page (opens in a new tab)Read October 3, 2026

Nearby

Listed professionals in states next to Montana

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

Before you hire

How to check a credential in Montana

  1. Montana's rule

    Montana's radon program says the state does not license radon professionals, so ask for a national certification instead, and check it in the next two steps.

  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 Montana

A tester

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

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 Montana

Does Montana require radon professionals to be licensed?

No. Montana's radon program page, checked on October 3, 2026, says.

Montana is not on the list of states with radon credentialing programs that EPA's state contacts page publishes.

Montana DEQ does not certify or require proof of certification for the contractors listed.
How do I find a certified radon mitigator in Montana?

No business is listed for mitigation in Montana on Radon411 yet.

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.

How to choose a mitigation contractor

Who tests for radon in Montana?

No business is listed for radon measurement in Montana on Radon411 yet.

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.

What a professional radon test involves

Does Montana offer free or discounted radon test kits?

Radon Control Program's page, checked on October 3, 2026, says:

Energy Bureau staff manage the radon information toll-free hotline and distribute subsidized radon test kits to Montana residents.

Free and discounted test kits by state

Is every business on this page licensed in Montana?

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

1 business with an address in Montana appears in a separate list because another state's registry lists it. That does not mean Montana licenses it.

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

Next steps

Where to go next