This paper analyzes the multiple generation living from the viewpoint of transfer of managing roles in urban living in order to find out the importance of multiple generation living and an indicator of multiple generation house planning. The results are as follows : 1) Roles move from parent generation to child generation along lifestages progress and the changes of family structure, regardless of the space division between generations. 2) Sharing spaces between generations promotes recognition about shared family area, shared generation area, and divided individual area. 3) High level recognition of multiple generation living promoted by past multiple generation living experience and the progress of lifestages must be taken in to the planning of multiple generation houses. 4) There is a gap between the actual and potential extent of flexibility, so greater consideration needs to be given to the possibilities of the future use of housing at an early stage of its planning.