The house designed for 4 members of a family with two kids.The clients’ requests for their new house are simple; the house is as large as possible, and space for parking.The site was nearly triangular, and it was cut the corner of an old residential area. The north side of the site faced the road, and the south side faced the waterway.The ground plan has been decided when I cut parking space.I thought about a method simple as possible to make complicated, pleasant space for their kids. As a result, a triangular site gave the method to me.They are active lively in space with the big stairwell and sit on there calmly to sometimes think deeply.