Selling a House With High Radon Levels in Wilmington

Radon is a colorless, odorless radioactive gas that seeps into houses from the soil underneath them, and it shows up in homes all over North Carolina — including Wilmington. The EPA recommends fixing any home that tests at 4 picocuries per liter or higher, and the only way to know your number is to test. Most sellers in Wilmington never think about radon until a buyer's inspection period, when the buyer orders a test and the result comes back high. At that point a deal that looked done is suddenly stuck.

Here is how it usually plays out in a traditional sale. The buyer's test comes back above 4 pCi/L, and their agent sends over a repair request asking you to install a mitigation system before closing. A standard system — a vent pipe and fan that pulls air from under the slab or crawl space and exhausts it above the roof — typically runs $800 to $2,500 in North Carolina, more if the house has multiple foundation types or a large footprint. Then the buyer wants a retest to confirm the fix worked, which adds days or weeks. Some buyers walk away entirely no matter what you offer to do, because the word radioactive does them in.

There is a disclosure wrinkle too. Once you have a test result in hand, that knowledge does not go away. North Carolina sellers complete a Residential Property Disclosure Statement, and while you can mark items as no representation, knowingly hiding a material problem you have documentation of is a risk no closing attorney will bless. So a failed radon test does not just cost you one buyer — it follows the house into every future negotiation.

You have a few honest options. You can pay for mitigation yourself before listing, which is often worth it if the house is otherwise in good shape and you have the time and cash. You can credit the buyer at closing and let them handle the install, though many buyers inflate the number when they hold the leverage. Or you can sell the house as-is to a cash buyer who prices the mitigation into the offer and does not need a retest, a repair addendum, or a lender's sign-off to close.

Nova Home Buyers purchases houses with high radon test results throughout Wilmington and across North Carolina. We buy as-is — no mitigation system required, no retest, no repair negotiations. We charge no fees or commissions, cover standard closing costs, and close on your schedule, often within 7 to 14 days when title work is straightforward. If a radon test just cost you a buyer, or you would rather not fund and manage a mitigation project before selling, reach out for a free, no-obligation cash offer.