Sekimachikita House is a minimalist residence located in Tokyo, Japan, designed by Atelier Spinoza. The plan for the two-family house was to try and provide as much separation as possible while still containing all of the programs under one roof. The parent households are situated on the main floor, while the children’s bedrooms are located on the upper level. The interior consists of subtle and ambient illumination that provides functional light for places such as the staircase and behind the kitchen ceiling.