DA-OSAKA has established its Tokyo branch office in Jinbōchō, Chiyoda, working with RID to shape a workplace set within one of the city’s most storied publishing districts.
Headquartered in Osaka, the company specialises in interior construction for commercial premises, and the Tokyo outpost occupies a building once known locally as the Shinbun-no-Shinbun Building, a former newspaper printing site along the Nihonbashi River.
Completed with a façade clad in clove-dyed brown tiles, the building has remained largely unchanged over time, its muted exterior blending quietly into the historic streetscape. One of its defining characteristics is an external staircase that leads directly to the second floor, operating alongside a conventional elevator. Rather than treating this as a secondary access point, the project reconsiders circulation entirely, positioning human movement as the organising principle of the workplace.
The intervention shifts the primary entrance from the second floor to the ground level, drawing the previously external stair into the interior sequence and extending the approach inward. This move establishes the stair as a central element and conceptual anchor, reinforcing the first floor as the starting point of daily activity. A semicircular wall profile wraps the staircase, softening the transition between levels and guiding movement upward with a continuous gesture.
