RadonCostGuide
Menu

State radon guide

Radon Testing, Mitigation Costs & Contractors in Massachusetts

Massachusetts DPH recommends that all homes be tested for radon. Any home can have elevated radon, including homes without basements and homes next to properties with low results.

Estimate mitigation costFind radon professionals

Testing your home

For initial testing, homeowners can buy a short-term kit or hire a nationally certified measurement specialist. Massachusetts recommends winter testing and careful adherence to closed-house conditions for short-term tests.

Free or low-cost test-kit information

Massachusetts DPH says it no longer offers free kits to the general public. Discounted kits can be purchased through designated outside programs such as Kansas State University; verify the current vendor offer before launch.

Programs and inventory can change. Confirm current availability with the listed agency before relying on an offer.

Mitigation cost planning

Estimate only: a professionally installed residential radon mitigation system often falls in a broad $1,200–$3,500 range, but the final price can be lower or higher. Foundation type, crawlspaces, finished basements, multiple suction points, fan/pipe routing, electrical work, permits, diagnostics, and post-mitigation testing can materially change the quote. Use local written bids rather than treating this range as guaranteed pricing.

A test result provides important context, but it does not directly increase the modeled price.

Massachusetts rules and public resources

Verified: The Commonwealth of Massachusetts does not certify radon professionals. DPH recommends professionals certified by NRPP or NRSB. Do not describe national certification as a Massachusetts license or certification.

EPA radon-zone context

Massachusetts has elevated radon in every county. EPA zones are broad planning information; testing is required to know a home's level.

Testing is the only way to know. EPA radon zones are broad planning tools. Never use a zone, county, ZIP, or map to predict the radon level of a specific home or to decide that testing is unnecessary.

Public radon professional listings in Massachusetts

Directory inclusion is not an endorsement or a guarantee. Confirm current services, credentials, insurance where appropriate, pricing, service area, and availability directly.

Browse all Massachusetts listings

Frequently asked questions

Should every home in Massachusetts be tested for radon?

Testing is the only way to know the radon level in a specific Massachusetts home. Maps, county averages, a neighbor's result, and foundation type cannot replace a properly conducted test.

What does a result of 4 pCi/L mean?

EPA recommends taking action to reduce radon at 4 pCi/L or higher and suggests considering action between 2 and 4 pCi/L. The action level is not a line between safe and unsafe; long-term risk generally increases as exposure increases.

How much does radon mitigation cost in Massachusetts?

Pricing varies by the home and the system design. RadonCostGuide uses broad planning estimates only; foundation type, crawlspaces, finished areas, suction points, electrical work, permits, diagnostics, and post-mitigation testing can all affect the final quote.

How do I find a radon professional in Massachusetts?

Start with the state radon program and the NRPP/NRSB directories where appropriate. Independently confirm current credentials, insurance, scope of work, permits, warranties, service area, and pricing before hiring.

Are free or low-cost radon test kits available in Massachusetts?

Massachusetts DPH says it no longer offers free kits to the general public. Discounted kits can be purchased through designated outside programs such as Kansas State University; verify the current vendor offer before launch.

Sources

Content reviewed 2026-08-22. Costs are planning estimates, not quotes or guarantees.