A preliminary assessment of the overall environmental sustainability of the existing housing system of Hong Kong is given, and the usefulness of M. Bhatti's building life-cycle model in developing a policy for sustainable housing development is assessed. While it is found that housing development in this highly compact city may not be ecologically sustainable, high-density living does enable some environment-friendly practices. The life-cycle model is instrumental in estimating the overall greenness of the housing processes, and prompts the need for formulating a sustainable housing policy. However, the model itself does not provide a framework for developing such a policy.
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Rebecca L. H. Chiu (2000) studied this question.