Building improvements are done to extend the useful life of a building or increase its value or both. Building Improvements include things such as air sealing, insulation, HVAC Controls, Lighting Controls, etc. These are fundamental in controlling the energy consumption of commercial buildings. These investments help prevent future capital costs like re-roofing or excess electrical consumption or heating in winters due to air leakage through doors etc. So overall the future maintenance costs can be prevented by money-saving building improvement techniques.