Protect your home and your valuables.
Never leave unknown workers alone in your home and never hide a key for an unknown worker. Although most homeowners are very careful early in a project, many let down their guard as the project progresses.
Keep valuables out of sight
Minimize risk from the beginning. Multiple homeowners reported thefts when unknown contractors, employees, or technicians were working in their homes.
Never make the final payment until you are completely satisfied
Money is power. Contractors are much less interested in making you happy after they have been paid in full.