Performance of radon testing for homeowners, homebuyers, landlords, and other commercial clients. Trained in professional testing protocols for residential, commercial, and multi-family housing structures. Who should test for radon gas? LANDLORDS of rental housing in Maine, who are required to test for radon by March 1, 2014. HOMEOWNERS find out your radon levels BEFORE you decide to sell your home HOME BUYERS ask for a radon test along with the home inspection OWNERS OF MITIGATION SYSTEMS ensure your system is working properly following installation and every 2 years EVERY HOME IN MAINE SHOULD BE TESTED!!! It is estimated that 1 in 3 homes has an elevated radon level.