Radon test
A test for radon gas, usually done during the inspection period. Levels above 4 pCi/L are considered high. Mitigation systems are common in areas with elevated radon.
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Why a seller cares
Radon is invisible and common, and a test during the inspection period is standard in much of the country. A reading over 4 pCi/L is treated as high, and it usually leads to a request for mitigation.
Part 2 of 4
A simple example
The buyer leaves a monitor in your basement for 48 hours during the inspection window. It reads 5.1 pCi/L.
| The reading | What tends to follow |
|---|---|
| Under 2 pCi/L | Nothing; the test is done |
| Between 2 and 4 | Often nothing, sometimes a request to retest |
| Over 4 | A request for a mitigation system, usually at the seller's cost |
A radon test takes two days and answers one question: over 4 or not.
Part 3 of 4
What people get wrong
That a low test years ago still counts. Levels vary by season and by home, which is why buyers test again.
Part 4 of 4 · where to read next
Where it appears in the sale
What a definition is, and what it isn't
Keighbor is a software company, not a law firm, brokerage, or tax adviser. This is general information, not legal, tax, financial, or real estate advice about your sale. Your situation may differ. Before acting on a contract, disclosure, title, tax, or pricing question, ask an appropriately licensed professional in your state.
Written and researched by Keighbor Research · drawn from the reference glossary · how we research and check what we publish
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