When comparing a building’s EUI with a benchmark, there are two mathematically equivalent methods of making adjustments; one can either adjust the benchmark or the building’s EUI, and the result would be the same (Bordass, 2005). Both adjustment methods can be found in different benchmarking systems. For example, the Energy Star model adjusts the benchmark while keeping the building’s EUI unchanged (Energy Star: US EPA Energy Star Program, 2001). Chung’s benchmarking method, on the contrary, generates a fixed benchmark and adjustments are made to the building’s EUI before the two are compared (Chung et al., 2006). In this study, building EUI was adjusted to generate normalized EUI, based on which a cumulative percentile distribution was constructed. The normalized EUI of a building can be calculated as follows: