Radon Testing When Selling a Home in Maryland

If you’re preparing to list your home in Montgomery County or the greater DC area, radon testing isn’t just a smart move — it might be required.

Since October 2016, Montgomery County law mandates radon testing prior to the sale of most single-family homes. Even outside this legal requirement, having a radon test done before listing can save time, support negotiations, and build buyer confidence.

Why Test Before Listing?

• Avoid deal delays: If radon becomes an issue during inspections, it could stall your closing timeline.

• Control the process: Testing early gives you time to mitigate or disclose results clearly.

• Boost buyer trust: A clean report is a selling point — especially in a competitive market.

What If Levels Are High?

No problem. You’re not required to mitigate unless you choose to. But by having the report in hand early, you avoid surprises.

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Make your sale smoother and protect your buyers — and your peace of mind.