| Quick facts | Answer |
|---|---|
| Cost range | Sub-slab depressurization system: $900–$1,600 |
| Time | Installation about 1 business day, then a 48-hour follow-up test |
| Who's qualified | Kentucky-certified radon mitigation contractor (NRPP/NRSB) registered with the Kentucky Radon Program |
What should we do today if the office reads 8.3 pCi/L?
Treat 8.3 pCi/L as elevated, since the EPA action level is 4.0 pCi/L. The Kentucky Radon Program says to contact a certified radon mitigator and arrange a professional system rather than trying a quick DIY vent. Call the Kentucky State Radon Program at 502-564-4856 to ask for a certified professional who can respond today.
What should we check before hiring a radon contractor?
Confirm the contractor holds a national radon credential and follows Kentucky program requirements. Ask for their certificate number and confirm they are registered with the Kentucky Radon Program before hiring. Kentucky law bars anyone from doing radon measurement or mitigation without proper certification.
Can an unqualified helper assist with the work?
Kentucky law allows a person to assist with mitigation only under the direct supervision of a mitigation contractor. Hire a certified lead professional rather than an unqualified handyman. Ask the pro for proof of licence and insurance before work starts.
How effective is mitigation at lowering the level?
University of Kentucky says certified mitigation systems can reduce indoor radon levels up to 99%. Ask your quote to show the expected post-installation test plan. Retest after installation to confirm the system is working.
What to do next
- Call the Kentucky State Radon Program at 502-564-4856 and ask for a certified professional who can respond today.
- Verify the pro's certificate number and confirm registration with the Kentucky Radon Program before hiring.
- Ask the pro for proof of licence and insurance and a written quote for a sub-slab depressurization system.
- Schedule a follow-up test about 48 hours after installation to confirm levels have dropped.
- 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.




