Radon Mitigation in Downers Grove, IL
High radon result? We connect DuPage homeowners with independent, IEMA-licensed mitigation contractors. Free, no obligation.
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How it works
- 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.
- Free for homeowners
- One pro, not a bidding list
- Local DuPage focus
- We only refer to IEMA-licensed radon mitigators
Downers Grove has lots of split-level and tri-level homes, which matter for radon: a split-level often has a basement slab and a crawlspace or slab-on-grade section. A good mitigator will test the sub-slab communication and may tie a crawlspace membrane into the same fan. Ask each contractor how they'll handle every foundation type in your house, not just the basement.
If you're under contract to sell, mention your closing date when you request a quote.
What IEMA's radon test records show for Downers Grove
IEMA publishes radon results reported by licensed measurement professionals. For test addresses in Downers Grove, we counted 5,179 valid tests on homes without a mitigation system; 44% were at or above EPA's 4.0 pCi/L action level and 18% 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 Downers Grove is close to 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 Downers Grove and what it means for radon
About 50,247 people lived in Downers Grove in the 2020 Census. The median home there was built around 1974, and the biggest share of its housing went up before 1970 (41% before 1970, 36% from 1970–1989, 16% from 1990–2009, 7% since 2010). Roughly 62% of homes are detached single-family houses and 8% are townhouses or other attached single-family homes; about 75% of households own their home.
With 41% of homes built before 1970, many Downers Grove basements have older block walls, floor drains or additions on slab or crawlspace. Those openings can affect where a mitigator puts the suction point and whether a crawlspace needs its own membrane, so ask each contractor how they'll treat every foundation type in the house.
Next steps in Downers Grove
- 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
Lombard Glen Ellyn Lisle Westmont
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.