Inspection guide
Omaha Home Inspection Radon Levels
Omaha home inspection radon levels are judged against the EPA action level of 4.0 pCi/L. See how inspectors test, how to read the number and what to do when it is high.
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How an inspector tests for radon
- Set up. The inspector confirms closed-house conditions and picks the lowest living level.
- Place the device. It goes at least 20 inches off the floor and away from drafts and outside walls.
- Run 48 hours or more. Shorter is not a valid short-term test.
- Read the result. The report gives the number in pCi/L and the test dates.
- Decide. At 4.0 or higher, buyers and sellers talk about a fix.
These rules match what the EPA Home Buyer's and Seller's Guide describes.
Reading the number
Radon moves with weather and house use. That is why inspectors may test twice. The EPA says to fix when the average of two short-term tests is 4.0 or higher. See radon testing and inspection or continuous monitoring if you want a closer look.
Got a high number? Ask for a bid
What Omaha numbers look like
The state DHHS report covers measurements from October 2019 to September 2024. It lists 19,027 measurements in Douglas County with an average of 4.8 pCi/L, and 5,649 in Sarpy County with an average of 5.3 (Nebraska DHHS county report). A county average cannot tell you what your basement reads. Only a test can. See all counties on our radon levels by county page.
After a high inspection result
Get a bid
Send us the report. We quote in writing.
Check the contract
Ask your agent how repairs and timelines work.
Install and retest
After the install, a test follows. See system installation.
Selling or buying? Read who pays for radon mitigation. Go back to the home page.
Questions people ask us
What radon level fails a home inspection in Omaha?
There is no pass or fail from the state. The EPA says to fix a home at 4.0 pCi/L or more, and to consider fixing between 2 and 4.
Is the home inspector the one who tests?
Often a separate radon test is added to the inspection. In Nebraska, a person who tests for pay needs a license.
How long does the test run during an inspection?
At least 48 hours, with closed-house conditions.
What if the result is just under 4.0?
Ask for a second test or a longer one. The EPA says levels below 4.0 still carry some risk, so a result from 2 to 4 is worth a second look.
Is radon common in Omaha homes?
Douglas County averaged 4.8 pCi/L across 19,027 measurements from 2019 to 2024, and Sarpy County averaged 5.3 (Nebraska DHHS report).
Can I trust a test done a few years ago?
Maybe not. The EPA says a buyer may ask for a new test when the last one is more than about two years old or the home has changed.