Lee's Summit is in Jackson County, which is EPA Radon Zone 1, and the tight, modern poured-basement homes here can still pull soil gas up through the slab. I test and mitigate houses from downtown and Lakewood out to the newer subdivisions along Chipman Road and Highway 150, and I explain your number before anyone talks about a fix.
📞 Call (816) 451-5827 Get My Free QuoteLee's Summit grew fast, and a big share of the housing dates from the 1990s to today: two-story homes with poured basements, walkouts, and finished lower levels where kids and guests actually spend time. Tight, well-sealed construction is great for energy bills, but a house like that can hold soil gas that finds its way in through the slab joint, the sump pit, and the plumbing penetrations. Radon has no smell and no color, so a test is the only real answer. I cover the bigger picture in my guides on whether radon is a problem in Kansas City and why Kansas City homes get radon.
I run a calibrated continuous monitor for at least 48 hours in the lowest level you actually use, with the house closed up the way it normally is. If your basement is finished, tell me which rooms get used so the monitor goes where the exposure is. The EPA action level is 4 pCi/L, and plenty of homeowners choose to act in the 2 to 4 range too. My radon testing page explains test day, and the guide to reading your results helps once you have a number.
A lot of newer Lee's Summit homes were built with a vent pipe stubbed up through the slab and out the roof, often called a passive system. It's a real head start, but without a fan it frequently doesn't pull hard enough to bring a high reading down. Depending on how the pipe was routed, I can often add a fan to it and then retest to confirm the number dropped. If the existing pipe won't work, I install a new suction point and run it to a quiet exterior fan. See how a mitigation system installation goes, or read how the systems work.
A result over 4 pCi/L during a sale is a normal, fixable item, not a reason to walk away. If you are buying, test inside the inspection window so the fix can be settled before closing. If you're selling, a recent test and a working system are a plus for buyers. The real estate radon page covers timing, and the buyer guide walks through the steps.
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Our Lee's Summit services: Radon Testing, Radon Mitigation Systems
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