Homeowner radon guide
Radon in basements
A basement can provide soil-gas entry pathways, but any foundation type can have a radon problem.
Testing location matters
Follow the device instructions for the lowest lived-in or potentially lived-in level.
Finished and unfinished spaces differ
Access and routing may influence installation, while the reading itself does not set the price.
What to do next
Use the cost estimator for planning or search for professionals whose recorded service area matches your ZIP code.
Content reviewed 2026-08-20. Educational information only; testing and a property-specific assessment are still required.