Built on a narrow, 5m x 16m plot of land, smack dab in the middle of Tokyo, the MDS-designed Tokyo Steel House is a four-story structure made of thin steel walls that sits atop a reinforced concrete garage.

Tokyo Steel House by MDS in main architecture  Category

With the desire to use the simplest construction method possible while still being able to control inside temperatures, the house was built using steel exterior walls that were bolted together with the help of lightweight beams sandwiched between wood.

Tokyo Steel House by MDS in main architecture  Category

The front exterior is shielded with a dual-layer expanding metal that prevents nosy neighbors from getting a peep, while also allowing light to enter. They open up to allow for better views from the inside.

Tokyo Steel House by MDS in main architecture  Category

Tokyo Steel House by MDS in main architecture  Category

Tokyo Steel House by MDS in main architecture  Category

Tokyo Steel House by MDS in main architecture  Category

Tokyo Steel House by MDS in main architecture  Category

Tokyo Steel House by MDS in main architecture  Category

While the exterior appears somewhat cold with its use of metal materials, the inside is warm and bright, with white walls, wood, and a minimal amount of metal.

Tokyo Steel House by MDS in main architecture  Category

Tokyo Steel House by MDS in main architecture  Category

Tokyo Steel House by MDS in main architecture  Category

Tokyo Steel House by MDS in main architecture  Category

The open staircase keeps lighting flowing through the space.

Tokyo Steel House by MDS in main architecture  Category

Tokyo Steel House by MDS in main architecture  Category

Take a look at these process shots to see how the house was built:

Tokyo Steel House by MDS in main architecture  Category

Tokyo Steel House by MDS in main architecture  Category

Tokyo Steel House by MDS in main architecture  Category

Tokyo Steel House by MDS in main architecture  Category

Photos by Hiroshi Ueda.