State radon guide
Radon Testing, Mitigation Costs & Contractors in Maine
Maine regulates radon service providers and provides specific guidance for radon in air and private well water. Testing requirements can be especially important in a real-estate transaction.
Testing your home
Homeowners/occupants can test their own residence in circumstances allowed by Maine law. Properties for sale have additional requirements; use a Maine-registered radon service provider when required. Maine also has radon-in-water guidance for private wells.
Maine's public health laboratory accepts orders for radon test kits. A current statewide free-kit offer was not confirmed; verify fees in the live order flow before displaying a price.
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.
Maine rules and public resources
Verified: Maine registers radon service providers. State guidance says testing and mitigation for properties for sale must be performed by a registered radon service provider, and other service-provider rules also apply.
EPA radon-zone context
EPA radon zones can provide regional context in Maine, but indoor air and private-well conditions must be evaluated at the property 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 Maine
Directory inclusion is not an endorsement or a guarantee. Confirm current services, credentials, insurance where appropriate, pricing, service area, and availability directly.
Aaron Radon Mitigation
Mitigation
Alltrades, Inc.
Mitigation
Aroostook Radon Services
Mitigation
Bay & Beyond Inspection Services
Be Safe
Bergeron Home Inspections LLC
BlueLeaf Home Services LLC
Central Maine Radon & Water Mitigation
Mitigation
Civil Engineering Services, Inc.
Mitigation
ClearView Inspections LLC
EUROFINS AUBURN
Testing
First Light Inspections LLC
Testing
Frequently asked questions
Should every home in Maine be tested for radon?
Testing is the only way to know the radon level in a specific Maine 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 Maine?
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 Maine?
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 Maine?
Maine's public health laboratory accepts orders for radon test kits. A current statewide free-kit offer was not confirmed; verify fees in the live order flow before displaying a price.
Sources
Content reviewed 2026-08-22. Costs are planning estimates, not quotes or guarantees.