At the present time, our family structure and our lifestyle in Japan have a wider diversity such as an extended family, a nuclear family, a single life and a community life, however; the style of housing has been bi-polarized by ready-made housings of house studios and bespoke housings of architects. On contrary of long-term high-quality housings, we propose to create a system of enumerating possible form of short-term housings which can adapt to a variety of life styles.