The client desired a simple form residence that cannot be perceived from the outside, though the interior space is wide open. The wish can be said the entire concept of the residence.Firstly, so as to take in light, living, dinning and kitchen, which are the central spaces, are arranged on the top second floor. As a way to prevent gaze from the outside, the spaces are enclosed together with a courtyard, Floating Patio, with walls and is placed as if floating above a Japanese-style room ' s structure of first floor. At the basement another thin courtyard, Sunken Patio, is made so that it will link to the second floor ' s courtyard. There, private spaces as bedrooms and bathrooms are placed under plentiful of light, though they are located in the basement.The first floor that is inserted between two private spaces on the top and the bottom is treated much intimate to the outside world compared to the two different floors. The Japanese-style room on the first floor is designed to be able to hold tea ceremonies. The second floor ' s floating structure serves as a large roof for the first floor and the open and dynamic space is created around the structure surrounding the Japanese-style room. The space is analogous to Roji, a designed alley, in the context of traditional Japanese garden and the Japanese-style room will become a tearoom arranged in Roji. Patio put on these three layers gives completely different space experience on each story. The difference in the image is very big and impressive. Moreover, by floating the box of the second floor, a wind enters from a crevice, and also the effect of the outer wall equipment opened and closed is also combined, and a fresh wind blows through this Patio -- comfortable space was realized.Here, Patio appeared as a new way of an urban residence.