This study investigates dwellings in terms of behavioral environment, focussing on recent trends of seating style and composition of "behavioral places", in recently supplied dwelling units. Part 2 is report on the deployment of sleeping and other personal activities in dwelling. 1. In a half of the core-family cases, parents and children are sleeping in a same room. 2. In the most of childrens rooms are required desk and bed, the most of parents rooms are tatami-rooms. 3. Along with the life stage development, places of personal activities shift from public to private areas. 4. It is needed in planning method, to support reformation of behavioral environment.
