Selling a house with radon: a seller's playbook

Radon doesn't have to derail your sale. Testing early, understanding disclosure, and lining up a certified mitigator ahead of time put you in control.

Test before you list

A pre-listing radon test removes surprises. If it's high, you can mitigate on your own schedule and market the home as already fixed — a selling point rather than a negotiation liability.

Disclosure

Many states require sellers to disclose known radon results and any mitigation system. A certified system with documentation is a positive disclosure: it signals the home has been handled properly.

Line up your contractor

Having a certified mitigation contractor ready means that if a buyer's test comes back high, you can act within days instead of scrambling. That responsiveness is often what keeps a closing date intact.