Colorado · 2026 pricing
Radon mitigation cost in Colorado
A typical sub-slab system in an 1,800 sqft full-basement home at 6 pCi/L in Colorado: $1,298–$3,825 · state cost factor 1.08×.
EPA radon zone summary: Zone 1 (highest — avg ≥ 4 pCi/L). EPA Zone 1 statewide — among the highest indoor radon levels 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 Colorado runs above the US average
Radon mitigation pricing in Colorado 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 1.08× factor is calibrated from 2025 AARST + HomeAdvisor regional rate data.
Local market in Colorado
Colorado has one of the most mature certified-mitigator markets in the US — 80+ NRPP- or NRSB-certified firms statewide, with the densest concentration along the Front Range (Boulder, Denver, Fort Collins, Colorado Springs). State CDPHE maintains a public registry alongside the federal NRPP/NRSB databases. Competitive multi-quote pricing — expect 10-20% spread.
State licensing & permits in Colorado
Colorado does NOT require a state-level mitigator license, but most municipalities (Denver, Boulder, Fort Collins, Colorado Springs, Arvada, Lakewood) require Mechanical permits ($75-$200) for fan install + electrical work. Post-mitigation re-test is industry standard but not legally required; the state CDPHE recommends it strongly for real-estate disclosures.
Top metros in Colorado
Strongest demand and certified-mitigator density: Denver, Colorado Springs, Aurora, Fort Collins, Boulder.