There are many other inspections that can be performed other than home & building inspections. An existing home that has lawn irrigation systems requires periodic testing of the backflow device. When a water leak is suspected, an inspection needs to be performed immediately to ascertain the source of the leak and the extent of the damage. Having an understanding of the system designs and tools like infrared imaging make that process efficient. Nobody likes having a big utility bill. Having an evaluation of your home's systems and identifying what may be wasting electricity. Have additional skills and certifications may provide the ability to contract with understaffed cities to assist in their building inspections program. Inspecting commercial buildings require advanced knowledge.