The owners are the master working at Major maker and his wife. Since they had just been blessed with a child, they obtained a plot to live happily together.

This small and narrow site; a frontage of just 2.7m and a length of 26m is located on a street in the traditional section of Tokyo where houses are alternated with small shops. Taking this difficult condition into consideration, we adopted a steel-framed structure. The SLIT which is inserted into a slight void of the urban townscape understates and emphasizes its architectural presence simultaneously. A spiral staircase connects the three stories and allows lights to pass through top to bottom. The first floor holds a lounge, the second floor lays bedrooms, and the third floor combines a living room, a dining room and a kitchen space. The light well and dramatic staircase give the house a strongly modern atmosphere. The project achieves a living space that is compact yet full of light and fresh air.