Radon Mitigation & Testing in Crest Hill
Crest Hill's 8,100 households span every radon era — postwar ranches, a 1990s core, and a third of the stock built after 2000 — and with roughly a third of homes renter-occupied, Illinois's 2024 tenant radon law lands harder here than anywhere else we serve.
Three building eras, one common denominator
Crest Hill's median home dates to 1992, but the average hides the spread: about 7% of the city predates 1940, a band of 1950s–70s ranches and split-levels fills the middle, and roughly 2,700 units — over a third of the city — arrived after 2000. Not one of those eras built radon protection in unless the home went up after June 2013, when Illinois finally required passive systems in new construction. Old slab cracks, mid-century sump pits, tight new envelopes: different entry paths, same gas, same fix. Median home value here is about $232,900, which makes a $1,200–$1,700 system a meaningful but very recoverable share of the asset it protects.
Landlords: 2024 changed your checklist
About a third of Crest Hill's occupied homes are rentals — the highest share in our service area. Since January 1, 2024, Illinois requires radon disclosure in most residential leases below the third floor, gives tenants a window to test, and — if a confirmed hazard goes unmitigated by a licensed contractor — can give them a path out of the lease. For a landlord with a handful of Crest Hill units, a documented licensed test per building, repeated on a sane cycle, converts an open-ended legal exposure into a line item. We arrange multi-unit testing and, where needed, mitigation with the required IEMA license tags on every system.
The numbers around you
Will County's Zone 2 designation predicts moderate averages, yet Illinois state testing shows over 40% of homes at or above the 4.0 pCi/L action level, and homeowner-submitted readings in the Joliet area average in the 6s. Crest Hill permits run through the city's Building Department on City Center Boulevard — routine paperwork your installer files with the quote. First step stays cheap: the Will County Health Department's $8 kit, sold minutes away in Joliet.
Homeowner or landlord — get your Crest Hill number.
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