Radon Mitigation Services in Iowa City, IA
Cedar Rapids Radon Pros provides radon testing and mitigation to homeowners throughout Iowa City, Coralville, North Liberty, and the surrounding Johnson County area. We're a short drive south on I-380, and our crews work regularly in neighborhoods from the Northside to Oakdale — so you're not waiting days for an out-of-area contractor. If a recent home inspection flagged elevated radon levels, or you've simply never tested your home, we can help you understand your risk and fix the problem the right way.
Why Iowa City Homes Face Elevated Radon Risk
Iowa consistently ranks among the states with the highest average indoor radon concentrations, and Johnson County is no exception. The underlying geology — glacial till and limestone-rich soils common throughout eastern Iowa — allows radon gas to migrate readily from the ground into building foundations. The EPA action level is 4 pCi/L, and a significant share of untested Iowa homes exceed that threshold.
Iowa City's housing stock adds to the picture. The city has a large number of older homes with full basements, slab-on-grade additions, and crawl spaces — all foundation types where radon can accumulate if ventilation is poor. University of Iowa faculty housing, older bungalows near downtown, and newer construction in the North Liberty corridor can all test high. Radon doesn't discriminate by home age or price point, which is why testing is the only way to know your actual exposure level.
Our Radon Testing Process
Before any mitigation work begins, we confirm what you're actually dealing with. We offer both short-term and long-term radon testing options:
- Short-term tests (2–7 days): Useful for real estate transactions or when you need results quickly. We place a certified charcoal canister or electret ion chamber in the lowest livable area of your home and send it to an accredited laboratory.
- Long-term tests (90+ days): Provide a more accurate picture of your year-round average exposure. Better suited for homeowners who aren't under a transaction deadline.
- Real estate testing: We understand closing timelines. If your Iowa City home sale is contingent on radon results, we coordinate testing and, if needed, same-week mitigation installation so deals don't fall through.
All test devices we use meet EPA and state radon program protocols. We explain your results in plain language — not just a number on a sheet.
Radon Mitigation Systems: What We Install
The standard and most effective approach for most Iowa City homes is a sub-slab depressurization (SSD) system. Here's how it works in practice:
- We core a small hole through your basement floor or slab and create a suction pit beneath the concrete.
- A PVC pipe runs from that pit up through the home — typically through a closet or along an exterior wall — and exits through the roof or a side wall above the eave line.
- A quiet, continuously running fan creates negative pressure under the slab, drawing radon-laden soil gas out before it can enter your living space and exhausting it safely above the roofline.
For homes with crawl spaces — common in some Iowa City neighborhoods — we install sub-membrane depressurization, which involves sealing the crawl space floor with a heavy polyethylene barrier and running a similar fan system beneath it.
Most installations in Iowa City take four to six hours. We test the system before we leave and provide post-mitigation testing instructions so you can verify the results independently.
Serving Iowa City, Coralville, and Johnson County
Our service area in Johnson County includes:
- Iowa City — including University Heights, the Northside neighborhood, and areas near Mercy and UI Health Care campuses
- Coralville — homes along the I-80 corridor and near the Coralville Reservoir area
- North Liberty — newer subdivisions and growing residential areas off Highway 965
- Tiffin, Hills, and Lone Tree — rural and semi-rural Johnson County properties
We're based in Cedar Rapids and run scheduled crews into Johnson County regularly. When you call, we'll give you a realistic arrival window — not a four-hour guessing game. For Iowa City customers, we typically have availability within the same week for testing and within one to two weeks for system installation, depending on season.
What to Expect: Pricing and Guarantees
Radon mitigation costs vary based on your home's foundation type, square footage, and how the pipe route needs to be run. We provide free, no-obligation estimates after a brief phone consultation or on-site assessment. There are no hidden fees for standard residential installations.
Every mitigation system we install comes with a post-installation radon test to confirm the system is performing. If results don't show a meaningful reduction in radon levels, we troubleshoot and adjust the system at no additional charge. We also stand behind our workmanship — if a system we installed develops a mechanical issue, call us.
To schedule a test or get an estimate for your Iowa City home, call us at (319) 774-8138. We're happy to answer questions over the phone before you commit to anything.
Frequently asked questions
How long does radon mitigation take for a typical Iowa City home?
Most standard basement installations take between four and six hours from start to finish. Homes with crawl spaces or complex foundation combinations may take longer. We'll give you a realistic time estimate before we schedule the job.
Do I need to leave my home during the installation?
No. The work is minimally disruptive — we core one hole in the basement floor, run pipe, and install the fan. Most homeowners stay home and go about their day. We'll let you know when we're working in any occupied areas of the house.
My Iowa City home was built recently. Do I still need to worry about radon?
Yes. New construction does not guarantee low radon levels, especially in eastern Iowa. Some newer homes are built with passive radon rough-ins, but those systems are not active without a fan and should be tested regardless. We see high readings in homes built within the last decade.
How soon after mitigation can I retest for radon?
We recommend waiting at least 24 hours after the system is running before placing a short-term test device. For the most accurate post-mitigation reading, a 48-to-96-hour test under closed-house conditions is ideal. We'll walk you through the protocol before we leave.
Can you help with radon issues discovered during a real estate transaction in Iowa City?
Absolutely — this is one of the most common reasons people call us. We understand that closings have deadlines, and we prioritize scheduling for real estate situations whenever possible. In many cases we can test, install, and provide post-mitigation results before a closing date.
Get a free quote
Call +13197748138 or send us your details — we respond the same business day.