Abstract
The purpose of this paper is to verify the conformity of plan of 3DK type and lifestyle of aged households. There are unconformity two-person household's lifestyles that have a meal with DK and use the south side room as bed room, as the result the north side 2 rooms becomes remainder, or residents have a meal in the south side tatami-room and the room is used as bedroom too. These lifestyles occupy 40% in the couple and 20% in the one parent and child. In the single, the lifestyle having meal in the south side room occupies 40%.