Several fundamental amendments concerning policies for housing and lots have been proposed in the recent report of the Council on Housing and Lots. Separation of living quality dependent upon the household size from housing performance is important to correctly understand the quality of housing stocks. Standard of housing stocks by looking at the number of housing units over 100 m
2 and 50m
2 has some rationale, for they are related to old standards. The report fails to consider substitutability of elements of residential environment. Moreover standard of living can be refined. These aspects should be pursued in the future.
Concerning, standard of residential environment, a new notion, namely sustainability, is added. This implies a fundamental change in considering our residential environment, for sustainability is based on what-we-act rather than what-we-get, which old four notions are based on. Announcement of qualitative scales for residential environment is important to promote the accountable policies. The report can be improved by stressing on improvement of ordinary residential areas, and by considering concrete counter-measure for prevention of excessive subdivision of lots based on the public welfare of group of lots.
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