This study reveals the facts of Machiya's architectural forms changes by its commercial usage from with historical passage. It investigated Matsuyama District in Ouda-cho, Nara Prefecture, where historic street and scenery still remain. Through architectural survey and hearing, it clarified the transitions in architectural forms by renovation and reconstruction, tendency in commercial activities, and changes in usage of individual houses. Although no architectural transformation case has been until pre-wa Showa era, massive renovation concentrates during the period between 1955 to 1965, and sales methods and the extent in commercial usage has also during the same period due to renovation. Also. The purpose of the renovation was to improve the image of the store, rather than the functional improvement.
