COBOD details a seismic-approved two-story printed house in Japan
Kizuki and ONOCOM’s reinforced-concrete project demonstrates a route through Japan’s structural requirements.
What happened
COBOD’s February report describes a two-story house completed by Kizuki with ONOCOM in November 2025. The company says the reinforced-concrete project obtained government approval under Japan’s seismic requirements.
Kizuki operated the printer on site for the compact, cave-inspired design. The project combines curved printed geometry with reinforcement and the engineering needed for a two-level residence.
The report is a 2026 account of a 2025 completion, rather than a newly finished house this February. Approval of this particular project also does not automatically validate every printed building. Its significance is the integration of design, construction and a demanding local approval process.
Read the sources
Primary-source reporting; this is not a hands-on review. Sources checked Oct 24, 2026.