This study aims to analyze the characteristics of the extension & reconstruction process and the framework of black market, by photographic analysis of “Wada-gumi Market” and measurement survey of “Omoide-Yokocho” at Shinjuku.###By this study, we show these points as follows; 1) Both buildings were remodeled under the definite features in a few years after the construction. 2) “Omoide- Yokocho” has three standards of the width of shops, and its buildings were regulated by the topography. 3) “Omoide-Yokocho” has three characteristics of the extension & reconstruction process such as remodeling towards back, remodeling towards upward, remodeling of stairs.
