How Much Does Radon Mitigation Cost in Indiana?
March 2, 2026
Radon mitigation in Indiana typically costs $1,200 to $2,000 for a standard residential installation. That price range holds for most Marion County, Hamilton County, and central Indiana homes with basements. Here’s what moves the price up or down and what you should expect for your money.
Typical Cost Range in Indiana
| Installation Type | Typical Cost |
|---|---|
| Standard basement (1 suction point) | $1,200–$1,600 |
| Basement (2 suction points) | $1,500–$2,000 |
| Crawl space (membrane + fan) | $1,400–$2,200 |
| Slab foundation | $1,200–$1,800 |
| Combined basement + crawl space | $1,800–$2,500 |
| Post-mitigation radon test (certified) | $100–$200 |
These are Indiana market rates. Prices in Indianapolis metro, Fort Wayne, and South Bend generally fall in the middle of these ranges. Rural areas may be slightly higher due to travel time.
What Affects the Price
Foundation type. Basements are the standard case — one drill point through the slab, a pipe run to the exterior, and a fan. Crawl spaces require a polyethylene membrane before the system can work effectively, adding cost. Slab foundations may need multiple suction points if the slab is divided.
Number of suction points. Some homes need multiple drill points to reach all areas of the foundation. Each additional point adds $200–$400.
Fan placement and pipe run. Exterior pipe runs (up the outside of the house) cost less than interior runs through the living space. If your home’s layout requires a longer pipe run, costs go up.
Diagnostics required. Before installing, a qualified contractor will perform a diagnostic to determine how many suction points are needed and where. Some contractors include this in their quote; others charge $100–$200 separately.
Post-mitigation test. A certified post-mitigation test confirms the system is working. Always request this — it should be included or offered for a modest fee.
What You Should Get for Your Money
A properly installed Indiana radon mitigation system should include:
- Pre-installation diagnostic to determine suction point locations
- Core drilling through foundation slab
- PVC pipe run from sub-slab to exterior
- In-line radon fan (warranted 5 years minimum)
- Electrical connection for the fan (or junction box if you’ll hire an electrician separately)
- Visual warning indicator (U-tube manometer) showing the system is running
- Post-mitigation radon test at 24–48 hours
- Written documentation of pre- and post-installation radon levels
Do not accept a quote that skips the post-mitigation test. That test is your proof the system worked.
Questions to Ask Before You Hire
- What is your Indiana IPLA license number? Verify it at mylicense.in.gov before signing anything.
- Does your quote include a post-mitigation test? Get this in writing.
- How many suction points does my home need, and how did you determine that?
- What fan warranty do you provide, and who services it if it fails?
- Do you handle the permit if my municipality requires one? (Most Indiana municipalities do not require a permit for residential radon mitigation, but some do.)
Getting Multiple Quotes
Get at least two quotes. Radon mitigation pricing in Indiana is competitive, and a $400 difference between contractors is common. The lowest quote is not always the best — confirm both contractors are IPLA-licensed and both include a post-mitigation test.
You can verify any contractor’s Indiana license at the IPLA verification portal or on their profile page here.
Frequently Asked Questions
What is the average cost of radon mitigation in Indiana?
Most Indiana homeowners pay between $1,200 and $2,000 for a standard sub-slab depressurization system. Homes with crawl spaces, multiple suction points, or difficult access may cost more. Get at least two quotes from licensed contractors.
Does radon mitigation increase home value in Indiana?
A working mitigation system with documented results can be a positive selling point. It removes a contingency risk from the inspection process and demonstrates to buyers that the problem has been professionally addressed. Some buyers and agents consider it a positive factor.
How long does a radon mitigation system last?
The PVC pipe components last indefinitely. The fan — the only mechanical component — typically lasts 5–15 years. Most contractors offer fan replacement as a service call. Test your home every two years to confirm the system is still working.