radon mitigation before closing

https://radonmeasurementspot.clarionvale.com/posts/why-radon-measurement-matters-for-st.-louis-homeowners

Before closing on a house, we made sure the radon levels were safe. The inspection found high radon, so we hired a pro for mitigation. They installed a sub-slab depressurization system, which vents radon from under the foundation to outside. A retest confirmed levels were low and safe. This step was essential for our family's health and gave us peace of mind as we finalized the purchase.