Cantilevered concrete home in Japan

This dramatically cantilevered home in Osaka seems to defy gravity while multiplying available space, providing another example of the clever tricks employed by Japanese architects to make the most of small lots. Though the home is actually three stories tall, Shogo Iwata designed House in Senri with eight tiered interior levels.

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Cantilevered concrete home in Japan front
Cantilevered concrete home in Japan green space
Cantilevered concrete home in Japan parking

The house was stabilized with a strong visible steel frame, giving the architects the freedom to experiment with the sense of space. Like many Japanese homes, it was partially built into the ground for natural insulation, extra green space and reduced visibility of neighboring homes. The cantilever also creates a shaded, protected space to park.

Cantilevered concrete home in Japan inside
Cantilevered concrete home in Japan stairs

Continuing the floating effect from the outside in, the interior room platforms connected to each other with small sets of stairs create linked spaces that flow together, making the house feel much larger than it really is.

Cantilevered concrete home in Japan tiered floors

This arrangement also “makes the notion of floor ambiguous,” the architects explain, as you proceed from the entrance under the cantilevered canopy all the way to the sunny terrace on the roof.

Cantilevered concrete home in Japan split level

“This house is planned for a family, husband, wife and their son. This small house has 8 levels of floor between entrance in the basement to the roof terrace in order to constitute every space not in concentrated way by big void but reciprocal relation of each space. This arrangement makes the notion of floor ambiguous and the continuity of space compatible with the hierarchy of space. In order to realize this spatial constitution with small gap we adopt steel structure. We use visible steel frame in 40mmx125mm flat bar that allow us to make each space flow without gravity.”

Based in Osaka, Shogo Iwata Architects is led by principal and founder Shogo Iwata, who’s also a Doctor of Engineering and a professor at Mukogawa Women’s University. The firm was established in 2005.