The aim of this study is to analyze thermal properties of straw bale house in 6th October in Egypt by ECOTECT. It has been found that; reused straw bale' U-Value matches with the Egyptian code. Additionally, comparing straw bale house with masonry brick house; as one of traditional building materials, it is showed that, discomfort degree hours for straw bale house are less by 40 % , energy consumption is less by 82%, and CO2 emissions are less by 80% than masonry brick house. Furthermore, the results of comparing straw bale house efficiency in Egyptian climatic regions concluded that straw bale house is more effective in arid region ‘Cairo" then, in hot arid region “El Arish".