If you are buying a new house, it is very important that you have the air tested for Radon.Why is that? Because radon gas is the 2nd leading cause for lung cancer.Radon gas is invisible and odorless, but it can be detected by proper equipment, and it is possible to mitigate the problem.
Since the gas comes up from below your house, you will need to look at your basement for a solution.Sealing up cracks and holes in the foundation can help, but most likely, more is needed.A fan with an exhaust pipe can be placed underneath your foundation to direct the gas elsewhere.
If you are selling your house, you should also check for Radon. Catching this problem early on and doing something about it, will keep your house sale from getting delayed or even derailed.
It is possible to get help from a radon mitigation contractor. You should compare the prices and services of a few before you commit though.