Radon Mitigation Cost in Indianapolis
Unlike most states, Indiana's health department publishes a price range. Here's that number, what moves a quote within it, and the costs that come later.
Indiana Department of Health
$1,500 – $2,500
IDOH says the cost of a radon mitigation system can range from $1,500 to $2,500, depending on the type of system and how the home was built.1
How that compares
| Source | Price |
|---|---|
| Indiana Department of Health, typical system1 | $1,500–$2,500 |
| National Radon Program Services, U.S. average2 | About $1,200 |
| Radon test kit (IDOH)1 | $5–$30 |
| Replacement fan, installed (EPA)3 | $200–$350 |
Indiana's range sits above the national average. Treat it as a guide, not a quote.
Why two Indianapolis houses get different quotes
IDOH ties the price to the type of system and how the home was built.1 In practice that means:
- Basement, slab or crawl space. IDOH notes any foundation type can have high radon. A crawl space usually needs a sealed plastic membrane, which adds labor.13
- Sealing. IDOH's 10-step process includes sealing cracks and openings in the basement as part of the job.1
- Electrical. IDOH says to ask who will do any licensed electrical work for the fan.1
- Permits. Ask whether permits are needed and who pays for them.1
Ready for an on-site bid in Indianapolis?
One short form connects you with one independent, licensed Indiana radon professional who serves your area. Free for homeowners.
Get my free referralTakes under a minutePrice questions IDOH says to ask
- Is the quoted price guaranteed?1
- Is there a warranty on materials or workmanship, and for how long?1
- If levels aren't reduced below the action level, how will it be fixed, and at whose cost?1
Costs after the install
- Electricity: roughly what a 60–90 watt bulb uses running nonstop.2
- Fan replacement: $200–$350 per EPA. Fans usually last 10–15 years.32
- Retesting: IDOH says to retest every 2 to 5 years, which costs only a kit.1
Cheaper during construction
Indiana doesn't require radon-resistant construction, but IDOH says some builders offer an active or passive system as an option.1 If you're building in Fishers, Westfield or Brownsburg, pricing it with the builder is typically cheaper than a retrofit later.4
Common questions
How much does radon mitigation cost in Indianapolis?
The Indiana Department of Health says a radon mitigation system generally costs $1,500 to $2,500, depending on the system type and how the home was built.
How much is a radon test kit in Indiana?
IDOH says kits cost $5 to $30 depending on type, and some require a lab fee when you mail them in.
Is the quoted price guaranteed?
Ask. IDOH lists whether the quoted price is guaranteed among its key questions for radon professionals.
How often will I need to retest after mitigation?
IDOH recommends testing homes every 2 to 5 years.
Please note: Indiana requires an Indiana Department of Health license to test or mitigate radon in homes. This page is general information summarized from public agencies, not professional advice. For advice about your home, talk with an IDOH-licensed radon professional.
Sources
- Indiana Department of Health (IDOH), "Radon: A brief guide on how to keep your home and family safe from radon" (PDF, updated Feb. 2026)
- National Radon Program Services (Kansas State University, EPA-funded), "Installing Mitigation"
- U.S. EPA, "Consumer's Guide to Radon Reduction: How to Fix Your Home" (2010)
- University of Kentucky BREATHE, radon policy booklet (PDF)