Buildings play a crucial role in determining the quality of life for residents of Hong Kong ([15] Gorer et al. , 2008). In Hong Kong, energy is the largest component of green house gas emissions, and the building sector is the largest user of energy ([15] Gorer et al. , 2008). Thus, key sustainability aspects of housing should be understood and integrated in order to embrace sustainable development in its fullest form in Hong Kong ([32] Mohammad and Amato, 2006). This indicates that there is a strong relationship between buildings and greenhouse gas emissions in Hong Kong. As public awareness of the necessity of sustainable development in Hong Kong has increased rapidly, people have begun to appreciate green features/buildings and the environment, for obvious reasons. First, as aging building stock in Hong Kong is increasing, these buildings are indeed needed to be assessed, certified and labelled not only for their environmental or economic impacts, but also for their social impacts on sustainable development of Hong Kong ([32] Mohammad and Amato, 2006). Second, they are also concerned about the deteriorating air quality affecting Hong Kong attractiveness both for multinational firms and tourists ([43] WBCSD, 2008). Finally, real estate stakeholders began to believe that integrating sustainable development thinking more closely into the heart of the business would improve competitiveness and marketability.