You failed a radon test in the Pittsburgh metro
Elevated results are the expected outcome across much of southwestern Pennsylvania, and double-digit readings are not unusual here. High is not the same as unfixable — this is well-practiced work with a measurable result.
Pittsburgh homeowners ask about mine voids and whether historic coal workings under a property change the radon picture. They also ask whether a hillside house with a multi-level foundation needs more than one system. Both questions have real answers, and both are settled by a diagnostic rather than by the deed history.
What an elevated result actually means
Confirm in the same location under closed-building conditions. On a stepped hillside foundation, consider confirming on the level that produced the high reading rather than wherever is convenient. If a sale is running, confirm and quote in parallel to protect the inspection window. Pennsylvania requires DEP certification for the work but does not compel a seller to install a system at any concentration — that remains a contract negotiation between buyer and seller. Closed-house conditions from December through March give the most conservative readings, and stack effect through a multi-level hillside foundation can be pronounced. Winter weather genuinely affects exterior work on steep sites, where ladder access and terraced yards become hazardous rather than merely inconvenient.
Your next four steps
Four steps, in this order. Confirm the result — a second short-term test or a longer-term measurement, run under closed-building conditions. Get written quotes from independent businesses holding a current Pennsylvania DEP radon mitigation certification. Decide who pays, which in Pennsylvania is a negotiation and not a legal mandate. Then verify with a post-mitigation test after the system runs. Nothing about a single elevated reading forces you out of your house or out of a contract. The measurement is the deliverable, not the equipment. Require it after a full day of runtime, placed exactly where the original detector sat, issued on paper carrying the DEP certification number. Where a foundation steps down through more than one occupied level, one reading does not speak for the others — say which level you care about before the contractor decides for you.
If the result landed inside a deal
Pennsylvania’s seller disclosure law requires sellers to disclose known material defects, and the standard disclosure form addresses radon testing and results. Pennsylvania does not require a seller to test or to mitigate — the response to an elevated result is negotiated. Given how common elevated results are here, local agents treat radon as an expected line item.
Communities we route in Pittsburgh Metro
- Pittsburgh
- Mount Lebanon
- Bethel Park
- Monroeville
- Upper St. Clair
- Cranberry Township
- Pittsburgh Metro hub →
Failed Radon Test questions in Pittsburgh Metro
Our reading was over 20 pCi/L. Is that a reason to walk away from the purchase?
Rarely, on its own. Very high readings are common in this region and the fix is the same well-understood system, verified by a post-mitigation measurement. What a number that high does justify is moving quickly — confirm and quote in parallel, make mitigation and a verification test a condition of closing, and get a DEP-certified contractor’s written design rather than an estimate over the phone.
Does an elevated result put a sale in the Pittsburgh metro at risk?
Pennsylvania has among the highest indoor radon readings in the country, and buyers here expect a test as a matter of course. Pennsylvania requires radon testing, mitigation, and laboratory services to be performed by professionals certified by the Department of Environmental Protection — a genuine state certification, and the credential to verify before hiring.
Am I legally required to mitigate in Pennsylvania?
No. A result at or above 4 pCi/L is an EPA action recommendation, not an automatic legal obligation in a Pennsylvania sale. What state law generally governs is disclosure — telling a buyer what you know — not whether a system gets installed. Who pays, and whether the work happens before closing, is negotiated between buyer and seller.
Related Pittsburgh Metro guides
- Radon mitigation in Pittsburgh Metro
- Radon testing in Pittsburgh Metro
- Mitigation cost in Pittsburgh Metro
- System installation in Pittsburgh Metro
- Pennsylvania radon contractors: join our network
Decision guides for this stage
- Failed a test during an inspection
- Negotiating radon repairs
- Buyer credit vs seller mitigation
- All homeowner decision guides
An elevated number in the Pittsburgh metro is a solvable building problem with a known fix and a verifiable result. Work the four steps, keep the paperwork, and let the 2 territories here put competing quotes in front of you rather than one.
Sources
- U.S. EPA — Radon
- U.S. EPA — A Citizen’s Guide to Radon
- U.S. EPA — Consumer’s Guide to Radon Reduction
- U.S. EPA — EPA Map of Radon Zones
Get Pittsburgh Metro quotes
Two minutes to request. Independent licensed contractors respond with their own quotes — free, with no obligation.