Koya No Sumika is a minimalist house located in Shizuoka, Japan, designed by mA-style. The extension is for a couple looking to expand on the main house – a one-story building in traditional Japanese architecture. The clients wanted to maintain the main functions of the home within the old building, and utilize the extension as an outlet for the couple’s two families. The new volume is connected to the original building via a corridor on the west side.

Photography by Kai Nakamura