Radon Abatement, Removal and Mitigation in Iowa

Start from the credential rather than the map. Iowa HHS publishes the list of credentialed radon mitigation specialists, and rule 641-44.3(1) requires that credential of anyone who mitigates radon in Iowa for a fee, including firms whose place of business is in another state. Get the name of the credentialed individual who will be responsible for your system, check it against the current list, then ask how soon that person can be at your address.

Iowa writes the rule around the credential rather than the address. Rule 641-44.3(1) says the credentialing requirement "applies to persons whose place of business is located in Iowa or in a state other than Iowa, and who offer radon mitigation services to residents of Iowa", so an in-town firm and an out-of-state firm answer to the same standard. Distance still affects scheduling and travel, so ask any firm you call how far it works and who the credentialed individual on your job will be.

Ask for the individual name, not just the company name, because chapter 44 credentials individuals. Then check that name on the Iowa HHS list of credentialed radon mitigation specialists. Credentials expire annually under rule 641-44.4(5), so confirm the current year rather than relying on a badge on a website.

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 runs roughly $800 to $2,500, with a median around $1,400. 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.

Radon abatement is radon mitigation: installing a system that lowers the radon concentration inside a building. Iowa uses the word in its own rule. Rule 641-44.1 says "All persons performing abatement for radon or radon progeny in buildings, other than buildings that the persons occupy or are constructing for their own occupancy, must be credentialed in accordance with the provisions of this chapter." The most common Iowa method is active sub-slab depressurization, a fan and a sealed pipe that draw radon from under the foundation and vent it above the roofline.

According to published Iowa contractor pricing, a standard sub-slab system runs roughly $800 to $2,500, with a median around $1,400. Larger homes, more than one foundation type, crawl spaces and long exterior vent runs push toward the higher end. That figure is published third-party Iowa market data, not a price set by Iowa Radon Professionals, and the specialist gives you a written itemized quote before any work. Our Iowa radon mitigation cost guide breaks down what moves the number.

The credentialing rule has a carve-out for your own home. Rule 641-44.10 exempts "Persons who mitigate radon or radon decay products in buildings that they occupy", and rule 641-44.1 excludes buildings the person occupies or is constructing for their own occupancy. That is what the rule says about credentialing, and it is not advice on whether to do the work yourself. Ask Iowa HHS about your specific building before you decide, and note that paying someone else to do it puts the job back inside the credential requirement.

That depends on your test result and your home, so start from the number rather than a general answer. Properly installed systems typically reduce radon by 50 to 99% according to the EPA, and Iowa turns that into a requirement: rule 641-44.3(4) paragraph e makes the installer install a system that reduces the level below 4 pCi/L in the area or level of the building where it is installed, with a follow-up test to check it. Iowa HHS puts the state average near 8.5 pCi/L against a typical indoor level of about 1.3 pCi/L.

Start from the credential rather than the map. Rule 641-44.3(1) requires the state credential of anyone who mitigates radon in Iowa for a fee, including firms whose place of business is in another state, so distance is a scheduling question rather than a qualification. Get the name of the credentialed individual responsible for your system, check it on the Iowa HHS list, and ask how soon that person can be at your address.

Yes, unless you waive it in writing. Rule 641-44.3(4) paragraph c says a credentialed person shall "Not disclose to any other person, except to the department or its agents, the addressee or owner of a nonpublic building, the radon levels present in the building or abatement measures needed or performed, unless the building owner waives, in writing, this right of confidentiality." What you choose to share when you sell is a separate question from what the contractor may share.

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 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.