Radon Testing - Ohio Law requires Radon Testers to be properly trained and licensed.  You can check on a license with the Ohio Dept. of Health by clicking here:  Radon License Check Home Inspections - Currently, Ohio law does not require Home Inspectors to be trained or licensed.  NSHI (National Society of Home Inspectors), ASHI (American Society of Home Inspectors) and other professional organizations are the only measure of quality and professionalism home buyers have in Ohio.  There can be a big difference between the inspector who is a member and must follow the standards and ethics of these organizations and the inspector who just inspects.  You must check your inspector/company carefully to make sure they are trained and follow the standards & practices of an independent agency.