Find a Licensed Indiana Radon Professional

Every contractor listed here holds an active Indiana state license. Data sourced directly from the Indiana Professional Licensing Agency (IPLA).

Browse All Contractors Search by County

Active Mitigators

Indiana Counties

High-Risk Counties

IPLA

License Verified

Indiana is a high-radon state. The EPA estimates 1 in 3 Indiana homes has radon levels above the action level of 4 pCi/L. Only a licensed professional can install a compliant mitigation system.

Browse High-Risk Counties

These counties are EPA Zone 1 — highest predicted average radon levels in Indiana.

Adams County

Zone 1

Decatur area

0 contractors listed

Allen County

Zone 1

Fort Wayne area

12 contractors listed

Bartholomew County

Zone 1

Columbus area

7 contractors listed

Benton County

Zone 1

Fowler area

0 contractors listed

Blackford County

Zone 1

Hartford City area

0 contractors listed

Boone County

Zone 1

Lebanon area

2 contractors listed

Carroll County

Zone 1

Delphi area

0 contractors listed

Cass County

Zone 1

Logansport area

0 contractors listed

Clay County

Zone 1

Brazil area

1 contractor listed

Clinton County

Zone 1

Frankfort area

1 contractor listed

Decatur County

Zone 1

Greensburg area

0 contractors listed

DeKalb County

Zone 1

Auburn area

0 contractors listed

Browse all 92 counties →

Radon Guides

Indiana Radon Levels by County — EPA Zone Map

EPA radon zone designations for all 92 Indiana counties. Find out whether your county is high-risk Zone 1 or moderate Zone 2, and what that means for your home.

How to Test Your Home for Radon in Indiana

DIY radon test kits vs. certified testers, how to place a kit correctly, what the results mean, and when to test again. A straightforward guide for Indiana homeowners.

Radon and Home Sales in Indiana — What Buyers and Sellers Need to Know

How radon affects Indiana real estate transactions. Disclosure rules, inspection contingencies, negotiating mitigation, and what to do when a test comes back high.

Why License Verification Matters

Indiana requires all radon mitigators and testers to be licensed through IPLA. An unlicensed contractor cannot legally perform radon mitigation work in Indiana, and their work may not satisfy a home sale disclosure requirement.

Every profile on this site shows the contractor's license number, type, and expiration date — updated automatically from the IPLA database.

Buying or Selling a Home?

Indiana real estate transactions commonly include radon test contingencies. A failed test during the inspection period requires fast action. Learn how radon affects Indiana home sales →

Need a building permit for your renovation? Check permit requirements on Indiana Permit Finder →