Radon Mitigation Cost in Iowa

Iowa ranks #1 in the U.S. for radon risk. 100% of Iowa counties are classified by the EPA as Zone 1 — the highest-risk category, with predicted average indoor radon levels above the EPA action level of 4 pCi/L. Here's what that means for mitigation cost.

Iowa radon risk profile

Iowa is the highest-radon-risk state in the U.S. — all 99 counties are EPA Zone 1, meaning the predicted average indoor radon level exceeds the EPA's 4 pCi/L action level. Iowa's geology of glacial till and limestone bedrock produces uranium decay throughout the state. The Iowa Department of Public Health estimates that 5 out of every 7 homes in Iowa have elevated radon levels.

Typical mitigation cost

National typical range: $1,200-$2,500 installed for a standard active sub-slab depressurization (ASD) system in a single-family home. Multi-level or multi-zone homes can reach $3,000-$5,000. These figures are from aggregated contractor pricing surveys and are not specific to Iowa.

We do not publish a Iowa-specific average cost figure because no reliable state-level cost survey is publicly available. Get 2-3 quotes from EPA-listed certified mitigators in your county for accurate Iowa pricing.

Iowa-specific factors

Most Iowa homes have basements or crawl spaces — the building configurations most vulnerable to radon entry. Active sub-slab depressurization (the standard mitigation system) is well-suited to Iowa's basement-prevalent housing stock. Many Iowa school districts conduct routine radon testing.

How to find a certified mitigator in Iowa

The two main certifying bodies for radon mitigation are the National Radon Proficiency Program (NRPP) and the National Radon Safety Board (NRSB). Both maintain public contractor directories searchable by ZIP code. If you live in a state with a radon program (which Iowa does), the state health department typically maintains a certified-contractor list as well — usually on the department's environmental health page.

Always retest after mitigation. A properly designed system should reduce levels to under 2 pCi/L; verify the result rather than trusting the contractor's word.

Try the calculator

Radon Mitigation Cost Estimator

Get an installed-cost range for a standard ASD system based on home size and foundation type.

Home Inspection Cost Estimator

Pre-purchase home inspection cost — radon testing is often a bundled add-on.

Sources