After 1990, there has been many studies about international comparison of building cost on houses. First, we surveyed some typical studies which compared them between Japan and USA, and analyzed the results by using 'purchasing power parity'(PPP). Second, we pointed out the difficulty for international comparison in this field, and proposed to develop a new comparison method using popular cost publications of each two countries. In summing up, we adopted 'G-K method' commonly used in ICP. It would be said that it is a new general model in international comparison of building cost.
