This paper (part-1) discussed the changes of inhabitants' consciousness to their residential environment for 13 years, using two surveys at 3 areas in Tokyo (in 1979-80 and in 1992). Fifty items composing the residential environment were analyzed by the extended method of MSA, and the changes of the chain structures of inhabitants' dissatisfactions were clarified. Main results were summarized as follows; the inhabitants seemed to have considered private garden as part of the house in 1979-80, but this cognition was slightly faded for 13 years. Public garden and walking path became to own part of the role of private garden in common. The same change as private garden also occurred in the structure concerning on air pollution.
