Should You Test for Radon Before Selling Your Northeast Ohio Home?
CENTURY 21 HomeStar
By Elliot Stone | The Stone Team
Reviewed October 25, 2026
If you're getting ready to sell, I'd put radon testing on the prep list. The EPA recommends testing before a home goes on the market when possible. Knowing the result gives you time to figure out what comes next. [1]
You don't need to panic about it. You do need actual information.
Start with what you already have
Already had a test? Find the report. Have a radon-reduction system? Pull together the installation paperwork and any follow-up results.
An older test doesn't automatically settle the question. The EPA notes that a buyer may want a new one, especially if the test isn't recent, the house has changed, or the buyer plans to use a lower level that wasn't tested. [1]
Your neighbor's result doesn't answer it
That goes for a house in Kirtland, Mentor, or anywhere else in Northeast Ohio. The EPA says nearby homes can have different radon levels, and its county map isn't a substitute for testing an individual house. [1] [2]
What happens if the number is high?
The EPA recommends reducing radon at 4 pCi/L or higher and considering action between 2 and 4. That's the measurement you'll see on the report. [2]
Ask a qualified radon professional to explain the result and any next steps. If work is recommended, get a written quote and ask about timing before changing your listing plan.
My advice: get the facts before you start guessing what this will cost or what a buyer will ask for.
Keep the paperwork
Ohio's property disclosure form asks about known radon, the level if known, and mitigation work. It also tells owners to report known conditions and mark information outside their actual knowledge as unknown. [3]
Keep your reports and read the questions carefully. If you're unsure how a disclosure requirement applies to your sale, get that specific question answered by an Ohio real estate attorney.
Before you list
Find your records, talk with a qualified testing provider, and leave time to review the result. Testing now doesn't mean a buyer can't ask for another test later. [1]
Working through the rest of your prep list? Read our guide to what to fix before selling.
Not sure where to start? Email Questions@rocksolidhousing.com. We'll help you sort through the next steps before you pick a listing date.
Sources
[1] U.S. EPA, Home Buyer's and Seller's Guide to Radon, EPA 402/K-24/001; seller guidance and testing sections. Checked October 25, 2026.
[2] U.S. EPA, Map of Radon Zones and Supplemental Information. Checked October 25, 2026.
[3] Ohio Department of Commerce, Residential Property Disclosure Form, effective June 2022, instructions and section H. Checked October 25, 2026.
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