Radon Mitigation and Removal in Iowa

Credentialed radon mitigation specialists. Iowa Administrative Code 641 chapter 44 requires a state credential for anyone who mitigates radon in Iowa for a fee, including companies based in other states that sell mitigation to Iowa residents. The credential belongs to an individual, and Iowa HHS publishes the list of who holds one, so you can check a name before hiring.

According to published Iowa contractor pricing, a standard sub-slab system typically runs about $800 to $2,500, with a typical Iowa job near $2,000. The installer provides a written, itemized quote before any work. Our Iowa radon mitigation cost guide breaks down what moves that number.

Yes. Radon removal, radon remediation, radon abatement and radon reduction all describe the same work: installing a system that lowers the radon concentration in a building. Iowa rules use the words mitigation and abatement. Companies advertise under all of them, so do not read anything into which word a firm picked.

Submit the form on this page or call, and a credentialed installer will look at your foundation and your test result and give you a written estimate. Comparing more than one estimate is worth doing on a job this size. Have your most recent radon number ready, because the design depends on it.

For a standard home, a sub-slab depressurization system is typically installed in about one day. Crawl spaces or homes with multiple foundation areas can take longer.

Properly installed systems typically reduce radon by 50 to 99% according to the EPA. Iowa goes further and makes it a requirement: rule 641-44.3(4) says the installer installs a system that reduces the level below 4 pCi/L in the area of the building where it is installed, and a follow-up test checks it. That test is run by an independent measurement specialist who does not work for the installing firm, or by you, not by the installer.

Ask Iowa HHS about your specific job before you assume either way. Chapter 44 defines a radon system modification as a change that alters an existing active system’s design, configuration or operation, such as adding or relocating piping, fans or suction points, and says it does not include routine replacement of parts with equivalent components that do not affect system function or layout. Converting a passive system to an active one is a modification and requires a credentialed person. A homeowner working on a building they occupy is exempt from credentialing under rule 641-44.10.

The NRPP-certified, Iowa HHS-credentialed partner contractor you are matched with is licensed and insured and provides a written workmanship warranty. You contract directly with that specialist, so get the warranty in writing and read what it covers before you sign.

That depends on your policy and your carrier, so ask them and get the answer in writing rather than relying on a general rule. What Iowa does require is the record: rule 641-44.8 makes the installer keep a report for at least five years describing the system, the materials installed, the diagnostic test results and the cost of each system. Ask for a copy, because that is the documentation a carrier or a tax preparer will ask you for.

Iowa is among the highest in the country. Iowa HHS puts the state average near 8.5 pCi/L against a typical indoor level of about 1.3 pCi/L, and roughly 71.6% of Iowa homes tested come back above the 4 pCi/L action level. All 99 Iowa counties are EPA Radon Zone 1, the highest-potential designation.

Radon readings are often highest in winter, when houses are closed up. That is also why short-term tests call for closed-house conditions. A mitigation system runs year round, so it is not a seasonal fix.