In Tanekura, a village in the Hida district of Gifu, many traditional wooden folk houses have remained.In this report, the transformation process of three storied folk house of the fifteen main houses are presented. About 1900's three storied folk houses already have existed. The attic space first expanded when rebuilding was done from thatched roofing to single roofing during the 1920's. After that, some houses called “tateage” appeared, where the lengthening of doorjamb was added while reroofing, thus providing even more space.The expansion of the attic space is related to the businesses of the house owners, such as sericulture and stock raising, and the change in roof material is thought to have to do with the changes of use of Japanese pampas grass as resources. A opportunity of the change in roof advanced three storied folk houses.
