Radon Mitigation Cost in South Dakota

South Dakota ranks #9 in the U.S. for radon risk. 73% of South Dakota 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.

South Dakota radon risk profile

South Dakota has 49 of 67 counties (73%) classified as EPA Zone 1. Like neighboring North Dakota and Iowa, the state's glacial-deposit geology produces high uranium content in soils and bedrock. South Dakota Department of Health offers free radon test kits to residents in some years.

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 South Dakota.

We do not publish a South Dakota-specific average cost figure because no reliable state-level cost survey is publicly available.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

South Dakota-specific factors

South Dakota's housing stock is mostly basement-or-crawlspace, conducive to standard sub-slab depressurization mitigation. Lower contractor density in rural areas can mean longer wait times and slightly higher costs than national averages.

How to find a certified mitigator in South Dakota

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 South Dakota 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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