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 High-Risk Counties
These counties are EPA Zone 1 — highest predicted average radon levels in Indiana.
Adams County
Zone 1Decatur area
Allen County
Zone 1Fort Wayne area
Bartholomew County
Zone 1Columbus area
Benton County
Zone 1Fowler area
Blackford County
Zone 1Hartford City area
Boone County
Zone 1Lebanon area
Carroll County
Zone 1Delphi area
Cass County
Zone 1Logansport area
Clay County
Zone 1Brazil area
Clinton County
Zone 1Frankfort area
Decatur County
Zone 1Greensburg area
DeKalb County
Zone 1Auburn area
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 →