Radon building inspection involves testing for this colorless, odorless radioactive gas that can seep from soil into homes. It's crucial in certain areas because prolonged exposure increases lung cancer risk. A professional places a detector in the lowest lived-in level for a set period, then sends it to a lab. Results guide decisions on mitigation, like sealing cracks or installing ventilation systems, ensuring your living space remains healthy and safe. radon building inspection 3