This study examines the regionalism of a small housing production system called "Machiba-shigoto" from the perspective of material supply and relationship among local carpenters. The main conclusions are as follows. 1) The small-scale carpenter's offices are more widely distributed in the rural area than urban area. 2) Through the interviews with the local carpenters and other craftsmen, we grasp the transformation of their working situation including materials supply system, in the past 50 years. 3) By use of "Building Mile", which is an index of material extent and volume, we made the comparison between two houses that built in 1967 and 2013. 4) In this case study, Building Mile of the house in 2013 is 6 times larger than the house in 1967. Also, the imported material-rate increased from 1% to 21%.
