This is Part 2 for USC Outreach Program Building. In normal housing for the aged projects, the aged people either stay in their rooms or in public spaces. According to specialist, 12 units for a cluster is a best way to solve social problems for the aged. In this project, 12 units with three different unit types were well organized in two different floors. A patio will bring sight contact and form tight society. To impel sight contact between people from different floors, crossing passages were created and the upper floor would have a reversed plan. To solve structure and piping problem, the axis area of reversing was set as piping and structure.