| Quick facts | Answer |
|---|---|
| Cost range | Sub-slab depressurization system: $900–$1,600 |
| Time | Most mitigation systems install in about one business day |
| Who's qualified | Kentucky-certified radon mitigation contractor, verified under KRS 309.430 to 309.454 |
What should I do today if my radon system failed inspection?
Have a certified radon mitigation contractor inspect the existing system first. Ask them to perform verification testing so the adjuster receives documentation that radon is now below the 4.0 pCi/L action level. Kentucky's Radon Program at (502) 564-4856 can also help with next steps.
What certification does a radon pro need in Kentucky?
Kentucky law says no person or business may conduct radon mitigation in the state without proper certification under KRS 309.430 to 309.454. The Kentucky Housing Corporation also requires mitigation to be installed by a professional certified for radon mitigation. Ask the pro for proof of certification before signing anything.
What should a written radon mitigation quote include?
EPA says a qualified contractor should review your test results and provide a detailed written proposal. The proposal should explain how the system will be designed and installed to EPA standards or state and local codes. Ask how long the work will take and exactly how the system will lower radon.
When should the follow-up radon test happen?
EPA says a follow-up radon test should be done within 30 days of system installation. It should not be done sooner than 24 hours after the fan starts running. This test is the documentation that shows the repair worked.
What to do next
- Ask the contractor for a diagnostic test before any redesign, as EPA recommends.
- Verify the contractor's Kentucky radon certification and request proof of liability insurance and bonding.
- Request a written proposal that covers system design, installation method, and expected timeline.
- Schedule a post-installation test within 30 days and ask for the results in writing for your insurance adjuster.
- Call (859) 249-8571 or email [email protected] for a free quote from a Kentucky-certified (NRPP/NRSB) radon mitigation contractor.
Lexington Radon Pros is a free referral service: an independent contractor does the work and may pay us a referral fee. You never pay us anything.



