Transformation of a 1960s Wooden Apartment Building in Tokyo’s Minato Ward into a Modern Commercial Space.
Project Name: Commercial Space in Minato
Studio Name: Roovice
Construction Year: 2023
Gross Built Area: 148m2
Area: Tokyo, Minato Ward, Shirokanedai
Lead Architect: Koji Kato | Roovice
Photography: Akira Nakamura
In the heart of Tokyo’s Minato Ward, a traditional wooden apartment building from the 1960s, originally divided into six separate units, has been creatively reimagined into a single cohesive commercial rental space. This transformation involved a complete overhaul of the interior, with all walls removed to create an open, unified layout.
Maximizing Light and Space on the Ground Floor
The previously dim and enclosed ground floor was redesigned to maximize natural light. The renovation kept as many of the original windows as possible while utilizing finishes that would amplify even minimal light. Ceiling boards were removed to increase height, and knotty red pine wood flooring was installed. The wet areas were given a distinct look with round-shaped PVC tile flooring, complemented by curved curtains for a soft, welcoming feel. A newly constructed wooden staircase provides access to the second floor.
A significant update was made to the entrance, which had been recessed and poorly lit. It was relocated closer to the front approach, making it more accessible. The new entrance, designed with a traditional Japanese lowered floor, features a smooth troweled mortar finish and was expanded to accommodate bicycles, skateboards, and other equipment, catering to active tenants.
Showcasing Natural Features on the Second Floor
Upstairs, the ceiling was removed to expose the original roof boards, showcasing their natural beauty. External insulation was added to the roof to maintain the rustic wooden look inside, creating a warm, natural atmosphere.
Several partition walls and columns were removed to open up the space, and structural support beams were added for stability. The original columns were restored and repurposed as supports for a modern kitchen counter, blending old and new elements seamlessly to reflect Roovice’s signature design.
The removal of internal walls also exposed the variety of original window sizes, contributing to a playful patchwork effect when combined with lauan plywood wall panels. The same wood was used for the flooring, finished with a glossy urethane coating. To maintain the room’s cohesive design, custom-made lauan light fixtures and switches were added.
The external staircase was preserved, allowing for flexible usage, with separate entrances for the upper and lower floors, enhancing the building’s potential for various uses.
This renovation demonstrates how aging architecture can be revitalized to meet modern demands. By preserving key elements of the original structure and thoughtfully integrating modern updates, this once-outdated building has been transformed into a unique, functional rental property that honors its past while embracing the future.
