Radon Testing During a Real Estate Transaction

Radon shows up in a lot of Utah transactions, usually inside the inspection period, and it behaves differently there than it does for a homeowner testing at leisure. There is a deadline, there are two sides with different interests, and there is a house that may be occupied, being packed, or standing empty with a lockbox on the door. None of that is difficult, but it does reward deciding early who is arranging what.

The practical questions are simple: who orders and pays for the test, when it can be run so the result arrives before the response deadline, how closed-house conditions will be maintained while showings continue, and what the parties will do if the number comes back at or above the published action level. Sorting those out at the start avoids the version of this where a test is placed late and everyone is negotiating with a clock running.

What comes up in a transaction

• Who arranges the test. Usually the buyer, as part of inspections, though a seller may test before listing to have an answer ready. Either way, agree in writing who orders it and who receives the result.
• The inspection window. Tests get scheduled around contract deadlines. A device needs its full run and the result needs to arrive with room to respond, so placement date is not a detail to leave loose.
• Closed-house conditions. The house must stay closed up for the duration, which is awkward during showings and moves. Everyone with a key needs to know the test is running before it is placed.
• Tamper concerns. This is why continuous monitors are common in transactions. They log conditions hour by hour, so an opened window or a moved device shows up in the record rather than in a dispute.
• Disclosure and prior results. Earlier test results and any existing mitigation system belong on the table. If a system is present, the paperwork, the fan age and any post-installation test result are worth requesting.
• Who handles the result. If a number lands at or above the published action level, the parties negotiate: seller mitigates before closing, buyer takes a credit, or the work happens after possession.

How a transaction test usually runs

Raise it early

Bring radon up when inspections are being scheduled rather than at the end of the window. Confirm who orders the test, who pays, and where the report goes when it is finished.

Coordinate access

Everyone with a key hears the same thing: the house stays closed up, the device is not moved, and showings work around the test. Agents, sellers and any tenant all need this in advance.

Run and report

The device runs its full period and the contractor issues a report. In a transaction the report itself matters, since both sides will read it and it becomes part of the file.

Decide, then verify

If mitigation is agreed to, a post-installation test confirms the system worked. That confirming result is what a buyer should actually want in hand before closing, not just an invoice.

What it costs

Transaction testing sits at the same end of the scale as any other test. House footprint and foundation type set the number of devices, since a large home, or one with a slab and a separate crawl space, may need more than one to represent the building. Continuous monitors, which are usual here because they log conditions and reveal interference, are a different tool than a lab-read passive device. Scheduling around a deadline, travel across counties, and a second confirming test can all appear in a quote. If mitigation enters the picture, its drivers are the mitigation drivers: routing, fan sizing and whether an existing sump can be used.

Questions people ask