In this district, the families where three generations live together in one house used to be typical, but these days the style of livingnext door is often seen. The aim of the research is to make it clear how the change proceeds and what has caused the change. The summary of this research is as follows:
The style of parents and their family living separately has rapidly increased from 1970's (50 percent) to 1980's (86 percent). During this period, many of living together in one house had changed into living next door.
Three factors are considered as the reason of increasing of living next door.
1) Psychological factor: removing psychological frustration and living frustration which is caused by the deference of their living time
2) Inducing factor: economical factor of economical independence, and the housing lot
3) Promoting factor: the resolution of the problem between a bride and a mother-in-law
