EPA zone context: Most of northern and central Illinois is Zone 1. The Chicago metro and surrounding suburbs are among the highest-risk areas.
Licensed Provider: Victoria J Storner-Bhatt
Professional Radon Testers, LLC is a dedicated radon services company serving Barrington, IL. Over 18 years of experience. Services include radon testing, radon measurement. Methods include heat recovery ventilation. Holds Certified Radon Measurement Professional certification.
Licensed Provider: David Kulakowski
Licensed Provider: Luke Anglea
5.0 (544 Google reviews)
Licensed Provider: Peter J Decker
Radon Gone, LLC is a dedicated radon services company serving Chicago, IL. Services include radon testing, radon mitigation system installation. Works with basements, crawlspaces. Methods include heat recovery ventilation. Rated 5.0/5 on Google based on 57 reviews. Offers free estimates, real estate transaction testing. Provides a 5-year warranty on mitigation systems.
4.9 (61 Google reviews)
Licensed Provider: Matthew Morgan
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Radon levels vary house-to-house even in the same city. Testing your own home is the only reliable way to know your risk.
Yes. The Chicago metro area is solidly Zone 1. Cook, DuPage, Lake, and Will counties all have high average indoor radon levels.
Illinois requires sellers to disclose known radon hazards. Testing is not mandated but is standard practice in Chicagoland real estate transactions.
Most homeowners in Illinois see mitigation quotes in the low-thousands, but the final cost depends on foundation type, fan location, and pipe routing complexity. A cost calculator can help you benchmark estimates before requesting bids.
Yes. A valid short-term or long-term test is the fastest way to confirm if mitigation is needed and to scope the right system design.
EPA recommends action at 4.0 pCi/L, and many homeowners choose to reduce levels even below that threshold. Most of northern and central Illinois is Zone 1. The Chicago metro and surrounding suburbs are among the highest-risk areas. ZIP-level lookup tools are useful for local context, but home testing is still required.
Look for current NRPP or NRSB credentials, ask for post-mitigation test expectations, and confirm local compliance details. Illinois requires radon mitigators to be licensed by the Illinois Emergency Management Agency (IEMA). All radon professionals must pass state examinations.
Estimate likely project pricing by foundation type and system complexity.
Learn when and how to test, plus how to interpret pCi/L results.
See how state-level risk varies and what zone maps can and cannot tell you.
Check projected local risk by ZIP code before you request quotes.