The Crestwood Corporate Centre Building no. 8 is a feature project of the C-2000 Program for Advanced Commercial Buildings by Natural Resources Canada. Building no. 8 is the physical twin of building no. 7, but is built to the strict energy-saving and environmental requirements of the C-2000 Advanced Buildings Program. It is modelled to operate at less than 50% annual energy consumption of an ASHRAE/IES 90.1 Reference Building, an accepted benchmark of good energy performance. The incremental capital expenditure for energy and environmental measures is estimated at 5.1% of the total construction cost. Analysis indicates a payback of 5.1 years based on energy savings.