In this paper, we focus the traditional timber buildings in Kyoto inner city area, and analyze the change and the present condition of their maintenance and renovation system based on the connection with carpenters and craftsmen because of the proper renovation. According to statics and the results of builders' seats researches, we mention the transition of carpenters and craftsmen in Kyoto and its central area, and the change of the building maintenance and renovation by residents and businessmen, and the relationship between building user and professional based on the investigation results. Finally we make clear that the maintenance and renovation system decline as the result of the interruption between residents and carpenters, which is owned to the possession of rental houses, the reduction of owner's economic power, and decreasing, aging and movement from inner city of carpenters and craftsmen.