Architectural Commission Protocol
From forest selection and 3D Passivhaus modeling to rapid on-site dry assembly.
Topographic & Solar Feasibility
Our architects analyze your land plot orientation, wind vectors, seasonal solar path, soil conditions, and municipal zoning to establish passive house parameters.
Timber Log Forest Selection
Hand-selecting mature Hinoki and Yoshino Sugi cedar logs directly in Nagano and Nara, or high-altitude European larch in the Swiss Alps.
5-Axis CNC & Hand Chisel Joinery
Precision mortise-and-tenon joints are milled to 0.1mm tolerances and finished by master carpenters (*Miyadaiku*) for flawless friction locking.
Dry Assembly & Handover
The entire timber structure is dry-assembled in under 7 days on-site with zero crane idling, followed by interior washi and tatami fit-out.
Reserve your 2026 / 2027 Architectural Build Slot
Due to rigorous timber log seasoning and master carpenter availability, annual commissions are strictly capped at 8 residential projects worldwide.