This project is a nine story office building in central Tokyo that aims to create a new prototype for urban timber architecture. The proposal was a hybrid structure of a steel post and beam frame and timber seismic frames inserted into it. This timber frame, named seismic timber lattice shell, is not only a structural but also an interior element to realize new workspaces where people can work in a more relaxed mode, enjoying the spatial value of the timber construction.

Motoki Yasuhara is a Japanese architect and associate professor at the University of Tokyo. After working for nine years at the office of Riken Yamamoto, a 2024 Pritzker Prize laureate, he co-founded the architect office SALHAUS in Tokyo with Masashi Hino and Mari Tochizawa. Since then, he has received high praise for the many timber public buildings with local timber. In recent years, he has also realized several high-profile projects involving mixed-use urban architecture, including urban timber buildings.