Lawrence is in Douglas County, which the EPA places in Radon Zone 1, its highest radon potential category. The EPA recommends fixing a home at 4 pCi/L or higher, so knowing your number is worth a modest cost. Below are typical price ranges from public sources, what moves the price up or down, and how long each step takes. These are not quotes. The independent professional we refer you to sets their own prices, so always ask for a written quote.
DIY test kit. The Kansas Radon Program says kits from county K-State Research and Extension offices cost under $10, all costs included, though availability varies by office. K-State's National Radon Program Services sells short-term kits by mail for $20 and long-term kits for $30, lab analysis included.
Professional short-term test (typical range). HomeGuide reports an average range of $125 to $400. Angi reports most homeowners pay $145 to $714, with large homes needing several devices at the top end.
Mitigation system. KDHE puts a typical professionally installed system in Kansas at about $1,000 to $1,200. The Kansas Radon Program cites an average near $1,200, usually within $800 to $2,500.
A kit is a sensible first screening in a home you already own. You place it in the lowest lived-in level, keep the house closed, and mail it to the lab. The weak point is the testing conditions, not the device: the Kansas Radon Program says the largest source of error is failing to keep windows and doors closed during the test.
A professional test costs more because a KDHE certified measurement technician places calibrated equipment, documents the conditions and reports the result. Kansas law requires anyone who performs radon testing as a service to be certified by KDHE, and KDHE guidance says tests done during a home sale must be performed by a certified measurement professional. For real estate, KDHE describes two common methods: one continuous radon monitor running at least 48 hours, or two short-term devices placed side by side. Read more about how radon testing works in Lawrence.
Foundation type matters most: basement, slab, crawl space, or a mix of these. Cost also depends on how easily air moves through the soil or gravel under the floor, where the vent pipe can be routed (up through the house to the attic, or up an outside wall), how much sealing is needed, and whether the fan needs a new electrical circuit. Crawl spaces usually need a plastic membrane sealed over the soil before the fan can do its job. The fan runs continuously, so expect a small addition to your electric bill. See radon mitigation in Lawrence for how systems work.
Testing for a home sale? See radon when buying or selling a home. Outside Lawrence, read our guides for Eudora and Baldwin City. Ready for a number specific to your home? Request a free quote and a certified local pro will follow up.
Typical ranges are about $10 to $50 for a DIY kit and roughly $125 to $400 for a professional short-term test, depending on the home and the test type. Ask any professional for a written quote before scheduling.
KDHE says a typical professionally installed system in Kansas costs about $1,000 to $1,200. The Kansas Radon Program cites an average near $1,200, with most jobs between $800 and $2,500 depending on the home.
For a home you own, a kit is a good screening if you follow the instructions and keep the house closed during the test. For a home sale, KDHE says the test should be done by a state certified radon measurement professional.
No. Requesting a quote is free and there is no obligation. We are a referral service, not a contractor, and we may be paid by the professional we refer you to.
Sources: EPA Map of Radon Zones · EPA Home Buyer's and Seller's Guide to Radon · KDHE radon laws · KDHE Radon & Real Estate · Kansas Radon Program FAQ · Kansas Radon Program: mitigation · K-State National Radon Program Services kits · HomeGuide · Angi
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