This report aims to illustrate how Japanese architects extrapolated a design theme from roof garden model through analyzing text and actual composition of contemporary Japanese houses with such model as it appeared in architectural publications. Initially, two aspects of the roof garden concept were extracted from explanatory text by architect themselves, and each scheme was then subjected to a “KJ-method” analysis (originated by KAWAKITA Jiro); one is the architect's intention in adopting roof garden, the other is the architect's distinct view of the spatial character on roof garden. Secondly, the actual composition of each house was assessed with regard to vertical and horizontal positioning of the roof garden. Finally, the mediation between each architect's thinking and the final composition has been plotted in terms of this dual classification.
