Many realtors are now getting thermographers to inspect homes up for purchase. Infrared imaging can reveal issues such as moisture, mold, structural cracks, and can help you determine the source of the problems within the home. One of the many reasons realtors hire thermographers is because it is non-invasive, and you don’t have to take the house part to figure out whats wrong.
Infrared scanning can point out electrical issues and help you identify the source of electrical problems. It can also help you find roofing leaks because water is typically found at a low temperature, infrared can show where there are bad leaks in the wintertime and can with repairs bring up the value of your home. 
 Thermal Imaging for Building Diagnostics. PD&R EDGE.