This is a two story house on the limited-sized site of Tokyo. In the urban city, it is common that the condition of surrounding environment has been changing in short cycle. In addition, it was required to sound suppression because this site is nearby highway and train station. My client requested to have the house which does not expose living condition to outside and has an open air inner space universally even if the surrounding environment changed. To utilize “Light Court” space in upper story, clients feel natural sunlight and gentle wind in their house.