Radon Mitigation in Lisle, IL
High radon result? We connect DuPage homeowners with independent, IEMA-licensed mitigation contractors. Free, no obligation.
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- 1. Tell us what you needAnswer a few quick questions in our short form. It takes about a minute.
- 2. We match you with one local proWe pass your request to one independent radon mitigation contractor who works in your area.
- 3. They contact youThe pro reaches out to set up a visit and a written quote. You decide; there's no obligation.
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- We only refer to IEMA-licensed radon mitigators
Lisle has many townhomes and condos alongside single-family neighborhoods. In an attached home, check your association's rules on exterior pipes and fans before scheduling, and ask the mitigator whether neighboring units share a slab. Single-family Lisle homes follow the usual sub-slab approach.
What IEMA's radon test records show for Lisle
IEMA publishes radon results reported by licensed measurement professionals. For test addresses in Lisle, we counted 2,390 valid tests on homes without a mitigation system; 50% were at or above EPA's 4.0 pCi/L action level and 22% were at or above 8.0 pCi/L.
For comparison, 42% of tests were at or above 4.0 pCi/L across the 26 DuPage-area and nearby cities we pulled from the same data, so Lisle is above that average. These are mostly real-estate and homeowner-ordered tests, not a random sample, so they can't predict your house — neighbors on the same block can test very differently. The only way to know is to test your own home.
Housing in Lisle and what it means for radon
About 24,223 people lived in Lisle in the 2020 Census. The median home there was built around 1983, and the biggest share of its housing went up between 1970 and 1989 (15% before 1970, 55% from 1970–1989, 20% from 1990–2009, 10% since 2010). Roughly 43% of homes are detached single-family houses and 11% are townhouses or other attached single-family homes; about 56% of households own their home.
About 10% of Lisle homes were built since 2010. Illinois' Radon Resistant Construction Act has required a passive radon pipe in new homes since June 1, 2013, so a newer house may already have a capped vent pipe. If it tests high, a licensed mitigator can often add a fan to that pipe instead of building a whole new system — usually the cheapest fix.
Nearly half of Lisle's homes (55%) date from 1970–1989, which includes a lot of split-levels and raised ranches. Those often combine a basement slab with a crawlspace or slab-on-grade section, and a good system design accounts for both.
Next steps in Lisle
- If you haven't, run a short-term test in the lowest lived-in level (EPA guidance). For a home sale, use a licensed measurement professional.
- If you're at or above 4 pCi/L, get a quote from an IEMA-licensed mitigator — Illinois requires the license for paid mitigation work.
- After installation, retest to confirm the level dropped.
Nearby areas
Wheaton Downers Grove Glen Ellyn Westmont Naperville radon mitigation
Also see: cost guide · FAQ
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DuPage Radon Mitigation Referral is a referral service, not a contractor. We only refer radon requests to IEMA-licensed mitigation professionals.