Missouri Radon Testing


I just picked up our SunNuclear radon testing unit from a typical 3 bed /2 bath home in Wentzville, MO. The unit had been placed in the lower level of the unfinished basement for the past two days. At the office I processed the results. The reading was 5.14 pCi/L -which was well over the EPA guidelines of 4.o pCi/L. This home would require radon mitigation to correct the high radon levels.


These clients were given a list of reputable radon mitigation companies. 7 Oaks Home Inspection tests for radon -but we do not offer mitigation services for high radon because that would be a conflict of interest They were very glad their realtor advised they get the testing! (Here’s a shout out to a great agent – John Jones with CBG!). The average price of mitigation is $700 to $1000 depending on the size and type of home. At 7 Oaks Home Inspection we charge $150 for testing but we discount that price to $100 when combined with the home inspection.


There are many places, other than just homes that should be tested for radon gas! Think about all the factories, offices, multi-family buildings, daycares, commercial buildings and schools – just to name a few. According to Missouri State Radon, (573) 751-6160 Warren County R 3 schools were all tested between 2012-2013 and found to be free of high levels of radon gas – – so you can take that one off your list. But at this time Missouri does not have state wide codes or laws that require testing and or mitigation on current homes or new construction. Laws have been passed in 40 states to help monitor and prevent radon gas.


Don’t assume your home is safe. If you haven’t tested your own home – do it and plan to retest every 2-3 years. Missouri home owners can receive a free ‘do it yourself’ test kit from the Missouri Health Department by calling 1 866 628-9891. This test won’t help you in a real estate transaction but it a very easy and affordable way to find out what your homes levels are. And feel free to call 7 Oaks anytime for additional information at 636 456-0001.


According to the EPA, radon gas is responsible for 20,000 deaths per year from lung cancer. In fact it’s the second leading cause of lung cancer next to cigarette smoking. You can’t see it, taste it or smell it. It that way it’s the same as carbon monoxide but the effects of living with high levels of radon gas may not show up for 20-30 years. Over one in five homes in Missouri test high. We have been in business for 13 years and our stats run from 21-23% of the homes we test require mitigation. It’s time to take radon testing seriously!


We give all of our clients a copy of the EPA’s booklet, The Citizens Guide to Radon. You can read it by clicking here.

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