What it typically costs
Average Costs for Radon Services in Central Illinois
Costs in Central Illinois vary by foundation type, square footage, and whether a property has a basement, crawlspace, or slab. These ranges reflect typical local pricing, not a guaranteed quote.
Radon Testing
$100 – $200
Short-term test kits or a professional inspection; often tied to real estate deadlines or listing prep.
Radon Mitigation & System Installation
$800 – $2,000
Sub-slab depressurization systems; price depends on foundation type (basement, crawlspace, slab) and square footage.
Radon Fan Replacement & Repair
$300 – $600
Fan-only swaps on an existing system; full repairs vary with pipe, seal, or manometer issues.