The aim of this study is to clarify the expression of comparing size of spaces by composition of stories in Japanese contemporary house. This expression is made by five characteristics in composition of stories such as ceiling height, floor area, position of entrance, relationship between bottom floor and ground, and relationship between top floor and roof. At first, we clarify composition of stories from the point of view of height and floor area. And finally 13 types are defined through the combination of five characteristics in composition of stories. And furthermore by the comparison of 13 types from the point of view of the contrast between the sky and the ground, the form is revealed that the expression of comparing size of spaces by composition of stories bring the diversity and complexity in contemporary architecture.
