Photos: Japan debuts first approved 3D-printed house with earthquake-ready frame

Built using a COBOD printer, the compact two-level home rises 7 meters and anchors into foundations designed for earthquake stability.

Developed by Kizuki Co. Ltd. with Onocom, the 50 sq m O House blends robotic 3D printing with a conventional reinforced concrete frame.

☑ Government approved first
Officially recognized as Japan’s first approved two-story 3D-printed reinforced concrete home, meeting strict seismic codes.

☑ Seismic-ready structure
Reinforced strip foundation and concrete frame carry the load, with printed walls integrated inside.

☑ Hybrid print method
A custom COBOD printer formed the walls, floor and roof slabs layer by layer.

☑ Four-person crew
Constructed on-site by a four-person team.

☑ Cave-inspired design
Curved walls and structural arches replace straight timber lines.

☑ Inverted interior layout
Living space upstairs, bedroom and en-suite below.

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