You failed a radon test in the Twin Cities
Elevated results are common across the Twin Cities, and Minnesota’s disclosure framework means most buyers and sellers here encounter one eventually. It is a fixable building condition with a measurable outcome, not a deal-ending defect.
Minnesotans ask about the disclosure law more than homeowners in most states, because the Radon Awareness Act put a specific publication and a disclosure step into every residential sale. Owners of newer suburban homes ask about the capped attic pipe. Owners of century homes ask whether a limestone foundation and an old coal chute can be sealed adequately.
What an elevated result actually means
Confirm the reading in the same location under closed-building conditions, and if a purchase agreement is in motion, collect written quotes in parallel. In the newer suburbs, look in the attic for a passive stack first — the fix may be cheap enough to settle the negotiation immediately. The Radon Awareness Act requires disclosure and delivery of the state publication; it does not require the seller to install anything, so the live question is who pays and whether the work happens before closing. Minnesota winters produce the strongest heating-season stack effect of any market here, and closed-house readings from December through March are both easy to arrange and appropriately conservative. Frost depth affects exterior trenching, which most designs avoid, and mid-winter attic work is uncomfortable but routine.
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 Minnesota Department of Health radon mitigation license. Decide who pays, which in Minnesota 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. Ask for the post-mitigation measurement after at least twenty-four hours of runtime, in the original detector location, in writing with the Minnesota Department of Health license number. In a transaction, get that document before the credit or repair is signed off — Minnesota buyers ask for it as a matter of course.
If the result landed inside a deal
The Minnesota Radon Awareness Act requires sellers of residential property to disclose known radon information and provide the state’s radon publication to buyers before signing a purchase agreement. It does not require testing or mitigation — the response to an elevated result is negotiated, and a written quote from a licensed contractor is what makes that negotiation concrete.
Communities we route in Minneapolis–St. Paul
Failed Radon Test questions in Minneapolis–St. Paul
The seller disclosed a past elevated test but never mitigated. What now?
That disclosure is exactly what the Act is designed to produce, and it puts you in a good position: you know the house has read high and you can test it yourself during your inspection period. Get a current measurement and a written mitigation quote, then negotiate from both. A disclosed history plus a verified fix is a cleaner outcome than a house nobody ever measured.
Does an elevated result put a sale in the Twin Cities at risk?
The Minnesota Radon Awareness Act requires sellers to disclose what they know about radon and to provide the state health department’s publication before a purchase agreement is signed. It does not require testing and it does not require mitigation. Practically, it means Twin Cities buyers arrive already expecting the conversation, and elevated results get negotiated rather than discovered late.
Am I legally required to mitigate in Minnesota?
No. A result at or above 4 pCi/L is an EPA action recommendation, not an automatic legal obligation in a Minnesota 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 Minneapolis–St. Paul guides
- Radon mitigation in Minneapolis–St. Paul
- Radon testing in Minneapolis–St. Paul
- Mitigation cost in Minneapolis–St. Paul
- System installation in Minneapolis–St. Paul
- Minnesota 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 Twin Cities is a solvable building problem with a known fix and a verifiable result. Work the four steps, keep the paperwork, and let the 3 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
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