The aim of this study is to clarify the spatial composition of common part in contemporary houses lived by three generations. The problematic were analyzed through three aspects. Firstly, connection diagrams of circulation path are created from the entrance of the building to the bedroom of each generation, and organized according to their positions. Secondly, relations of the parent and the children parts and common part are examined through the diagram of the division of volume of the whole construction. Finally, comparison of the spatial composition of common part leads to extract several typologies.
