Radon Mitigation Cost Guide — DuPage County, 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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Radon Mitigation services & cost guide for DuPage County, IL
EPA says the right reduction method depends on your foundation and the radon level, and that most homes can be fixed for about the cost of other common home repairs. Here's what DuPage homeowners typically see quoted.
| Service | Typical range (estimate) | What drives the price |
|---|---|---|
| Radon test (short-term kit or licensed tester) | Kits ~$15–$40; professional test ~$150–$300 (estimate) | DIY vs. licensed tester; real-estate deadlines |
| Sub-slab depressurization system (most common) | ~$1,000–$2,500 (estimate) | Basement vs. slab vs. crawlspace, number of suction points, fan location, finished basement |
| Crawlspace membrane + venting | ~$1,500–$3,500+ (estimate) | Crawlspace size and access |
| Sealing cracks/sump lid (add-on) | ~$100–$500 (estimate) | Number of openings; sealing alone rarely fixes radon (per EPA) |
| Fan replacement on an existing system | ~$300–$700 (estimate) | Fan model, labor |
These are estimates, not quotes. Ranges are rough national/regional estimates compiled from public cost guides and EPA's note that cost depends on house design and the reduction method; they are not prices from any specific Illinois contractor. Ask any contractor for a written, itemized quote before work starts.
How to compare radon quotes
- Confirm the IEMA mitigation license number on IEMA's site.
- Ask where the pipe exits and where the fan sits (EPA recommends fans outside living space).
- Ask for a post-mitigation test plan and a written guarantee of the result level.
- Ask about fan warranty and the system's monitor (a U-tube manometer).