Abstract
We think there are many valuable techniques which is able to improve the environmental performance in the traditional old house. Therefore, we investigated the space layout and environmental performance of IGURATSUKURI houses in KAMO area. As a result, we clarified some space layout techniques for climate characteristics of IGURATSUKURI houses, as follows: 1) technique to keep out the seasonal wind in winter and let in the seasonal wind in summer, 2) technique to use rooms in winter and summer, 3) technique to control sunlight by a double roof.