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Radon Mitigation Cost: What State Programs Say to Expect
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EPA does not publish a dollar figure in the guides we read. The numbers below come from state radon and environmental programs. We tried to open several commercial cost-estimate sites, but they blocked our requests, so we used none of their figures. If you see numbers on those sites, treat them as marketing estimates, not government data.
Sourced price ranges
| Source | Figure | Notes |
|---|---|---|
| North Carolina Radon Program (NC DHHS) | About $1,500 average; $1,000 to about $2,500 | Cost of a contractor lowering radon in an existing home. Page shows no year. |
| Michigan EGLE | $800 to $2,000 or more | Typical cost of installing a radon mitigation system. Page shows no year. |
| Pennsylvania DEP (January 2025) | $800 to $1,200 | Permanent radon mitigation systems in Pennsylvania. |
| Utah DEQ | Around $2,000 | Estimate for fixing a high radon level. Page shows no year. |
All four are state government pages we opened. They are not national averages.
What changes the price
- Home size and design, and the foundation type (EPA, North Carolina). Homes with more than one foundation type may need a combination of methods.
- How high your radon level is. EPA lists this as a factor in choosing a system.
- Diagnostic tests. Many contractors give free estimates but may charge for diagnostic tests (EPA, North Carolina).
- Options. EPA says typical extras include an extended warranty, a service plan or improved looks.
- Permit and tax fees. EPA says the contract should list the total cost, including taxes and permit fees.
- Running costs. A cheaper system can cost more to run and maintain, and fans slightly raise your electric bill (EPA).
Running costs
| Source | Monthly cost | Fan life and replacement |
|---|---|---|
| Michigan EGLE | About $3 a month on average; no periodic maintenance | Fan lasts around 11 years; replacement normally $145 to $300 |
| Utah DEQ | About $8 to $10 a month on the utility bill | Replace the fan after about 15 years |
State estimates that differ from each other. Your electric rates and fan will change the result.
How to compare quotes (EPA)
- Get more than one estimate and ask for references.
- Check that each includes proof of certification, proof of liability insurance, testing after installation and a warning device.
- Ask whether the contractor guarantees to reduce radon to 4 pCi/L or below, and for how long.
- Read the contract. It should list the total cost, deposit, timeline, permits and warranties.
See our guide to finding a certified contractor for the full checklist.
Ready to compare quotes?
EPA says to hire a qualified, certified radon mitigation contractor and to get more than one estimate. Start with your state radon program, then compare written quotes.
How to find a certified contractorCompare local radon prosCommon questions
How much does radon mitigation cost?
State radon programs give these figures: North Carolina says the average contractor price is about $1,500, ranging from $1,000 to about $2,500. Michigan says typical costs run from $800 to $2,000 or more. Pennsylvania says permanent systems typically cost between $800 and $1,200. Utah says it should be around $2,000. EPA says most homes can be fixed for about the same cost as other common home repairs.
Why do the numbers differ?
EPA says cost depends on how your home was built and how big the radon problem is. Each state figure also comes from a different place and date, so treat them as rough guides and get written quotes.
What does it cost to run a radon system?
Michigan's EGLE says about $3 a month on average with no periodic maintenance, and fan replacement of $145 to $300 after around 11 years. Utah's DEQ says about $8 to $10 a month and replacing the fan after about 15 years. EPA says systems with fans slightly increase your electric bill.
Should I get more than one quote?
Yes. EPA says to get more than one estimate and to ask for references. Utah's DEQ suggests at least three estimates from certified mitigators.
Related guides
- How radon mitigation systems work
- Find a certified mitigation contractor
- Radon in a home sale: who pays?
- What does my radon test result mean?
- North Carolina Radon Program (NC DHHS): Radon Mitigation
- Michigan EGLE: Radon in Real Estate Transactions
- Pennsylvania DEP: DEP Encourages Pennsylvanians to Test Their Homes for Radon (January 9, 2025)
- Utah DEQ: High radon levels? What’s next
- U.S. EPA: Consumer’s Guide to Radon Reduction: How to Fix Your Home (EPA 402/K-10/005, December 2016)
- U.S. EPA: A Citizen’s Guide to Radon (EPA 402/K-12/002)
Free printable: Radon Test Day Checklist
EPA's testing steps in one page, plus what your result means. Download the one-page PDF now, or get it by email along with a short series of five helpful emails.