In 2008, the oil price has risen 200% by 2007. The high price of energy source and the pollution of its use have arise worldwide concerns. As the result, the tools to evaluate the performance of buildings in terms of energy efficiency have attracted attentions. For examples, BREEAM(1991) by UK, LEED 2.0(2001) by US, GBTool(2002) by Canada, etc. These tools have been developed by the central government. They have tried to introduce these into public facilities in previous as the public facilities play an important role in urban life-They provide a place for the purpose of communication, administration, relaxation etc. The purpose of this study is to prepare the fundamental data to develop the criteria to assess the performance of Green building assessment for public facilities.