One thing that you will find that a majority of home inspectors include in their services or offer as an add-on is radon testing. You might be aware that radon gas is harmful, but were you aware that it is the second most common cause of lung cancer?
This means that avoiding radon gas in your home could be a life and death issue. Since radon gas comes from the ground underneath your home, it is most likely to enter through the basement. It could be that you can stop this by plugging up cracks and holes in your basement floor, but if this doesn’t bring down the concentration of gas in your air enough, you should consider getting a system installed that will funnel the gas safely out to the sides to keep it from entering your home. This involves having fans installed with ducts funneling the gas away.