Radon Mitigation Cost in Indiana

Indiana ranks #10 in the U.S. for radon risk. 62% of Indiana 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.

Indiana radon risk profile

Indiana has 57 of 92 counties (62%) classified as EPA Zone 1. The state has elevated radon throughout the central and southern regions, with the highest concentrations in counties along the Wabash and White river valleys. Indiana State Department of Health offers low-cost test kits and certified mitigation contractor referrals.

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 Indiana.

We do not publish a Indiana-specific average cost figure because no reliable state-level cost survey is publicly available.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 Indiana pricing.

Indiana-specific factors

Indiana's housing stock includes many older homes with basement foundations vulnerable to radon entry. Mitigation costs in Indiana tend to be near the national average. Indianapolis metro has the highest contractor density.

How to find a certified mitigator in Indiana

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 Indiana 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.

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