Wyandotte County sits in EPA Radon Zone 1, and the older homes on the bluffs and hillsides here have plenty of ways for soil gas to get in. I test and mitigate houses from Strawberry Hill and Rosedale to Armourdale and the west side, and I explain your number before anyone talks about a fix.
📞 Call (816) 451-5827 Get My Free QuoteWyandotte County has some of the oldest housing in the metro: early 1900s frame and brick homes on Strawberry Hill and in Rosedale, post-war bungalows, and block-foundation ranches farther west. A lot of those houses were cut into hillsides above the river bluffs, so a basement wall can sit pressed against bare soil and rock. Add old foundation cracks, open sump pits, and gaps around pipes, and the gas has easy ways in. Radon has no smell and no color, which is why 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. In an older home with a stone cellar or a partly finished basement, tell me which rooms you spend time in 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.
The basic system is a pipe and a quiet fan that pull soil gas from under the house and vent it above the roofline. The older-house twist is the floor. Where a cellar has a dirt or crumbling floor, I lay a sealed membrane over the soil and pull from beneath it, and I seal sump pits and the wall-to-floor joint so the fan works on the soil instead of your basement air. Most installs wrap up in a day, and I retest afterward. 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 in Wyandotte County, test inside the inspection window so the fix can be settled before closing. The real estate radon page covers timing, and the buyer guide walks through the steps.
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