Iowa · 2026 pricing
Radon mitigation cost in Iowa
A typical sub-slab system in an 1,800 sqft full-basement home at 6 pCi/L in Iowa: $1,106–$3,259 · state cost factor 0.92×.
EPA radon zone summary: Zone 1 (highest — avg ≥ 4 pCi/L). EPA Zone 1 statewide — Iowa has the highest average indoor radon in the US.
Radon Mitigation Cost Calculator
Estimated cost
$1,113–$3,479
Typical: $2,087 · state factor 1.10×
Line items
- System — Sub-slab depressurization (most common)$2,087
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Estimates are educational — actual quotes from local pros may differ based on site conditions, permits, and seasonal demand.
Why Iowa runs below the US average
Radon mitigation pricing in Iowa reflects three regional factors: licensed HVAC / specialty trade wages (BLS), EPA Zone density (Zone-1 states have mature mitigator markets and competitive pricing), and state-specific permitting / disclosure requirements. The 0.92× factor is calibrated from 2025 AARST + HomeAdvisor regional rate data.
Local market in Iowa
Iowa is the highest-prevalence radon state in the US — average indoor reading is 8.5 pCi/L, more than 2× the EPA action level. Iowa Department of Public Health (IDPH) maintains the country's most rigorous mitigator credential alongside NRPP/NRSB. 60+ IDPH-licensed firms statewide. Des Moines, Cedar Rapids, Davenport, and Sioux City all have strong specialist density.
State licensing & permits in Iowa
Iowa Code §136B requires IDPH Radon Mitigator credential for any paid mitigation work. Permit fees at the municipal level run $50-$200. Iowa real-estate transactions require radon disclosure under Iowa Code §558A; many sales contracts now include mitigation as a standard contingency.
Top metros in Iowa
Strongest demand and certified-mitigator density: Des Moines, Cedar Rapids, Davenport, Sioux City, Iowa City.