An apartment building for 7 families located at the corner in residential area. By creating the piloti connected to the frontal residential roads, the building has the open public space on the ground level. The mass of the building was designed by calculating the ratio of the viewable sky from the road. As a result, the building has the uneven skyline, open sky balconies, piloti and staircase that penetrate the mass. Those exterior spaces have L-shaped side walls that lead the wind into the interior, so that the exterior spaces could be connected to the interior. And also, the elements in the exterior spaces (handrails, soffits, stair landings, etc) were designed to allow the residents to install their things on it. By designing the exterior spaces as described above, the uniqueness of the each residents would appear on the facade and become a part of the streetscape over time.