This residence in central Tokyo is a striking gray volume with geometric forms that integrates seamlessly into its urban context
Occupying a gently sloping site in the center of Tokyo, Clay House, designed by ATTA – Atelier Tsuyoshi Tane Architects, is iconic architecture that combines tradition with sustainability.
The history of this residential district dates from the Edo period (1603–1867), when the city of Tokyo was divided into neighborhoods and streets by samurai residences. Over the years, embassies and Western-style buildings replaced these homes, creating an urban landscape with a diverse and international architectural style.
On two levels, Clay House is a striking gray octagonal volume. A distinguishing feature of the design is the use of geometric shapes of different heights, these creating corners and edges that help the home blend into its setting. These elements not only give the building a distinctive presence in the urban fabric, but also add more space to the interior. In fact, one aim of the project was to establish a balance between the surrounding landscape and the interior of the home by maximizing the available space.
On the lower floor, spaces with different functions – an entrance hall, living area with open-plan kitchen, wine cellar, garage, and a bathroom – coexist, giving the home’s layout a sense of unity. On the upper floor are a study and the bedroom area, including the main bedroom with a walk-in closet, a guest room, and the main bathroom.
The interior finishes are all sand-colored brushed clay, creating visual continuity between rooms. Timber furniture with minimalist designs adds color to the spaces, while bringing a touch of nature inside. The door frames and skirting boards are also timber.
The open-plan kitchen features a large L-shaped counter, which acts as the centerpiece of the space and the social hub of the entire home. Upstairs, the bathroom is large and illuminated by a skylight, which bathes the walls in delicate sunlight, giving the room a peaceful mood.
Clay House is the product of master craftsmanship, which, although slower than modern methods, guarantees the building greater longevity. The house also has better insulation than the standard for Tokyo, optimizing its thermo-hygrometric characteristics. At the same time, the connection between inside and out, typical of traditional Japanese architecture, is maintained.
In compliance with local regulations, the built volume occupies no more than 70% of its site, returning the remaining 30% to nature. Several trees have therefore been planted, which help maintain the ecological balance and improve the overall landscape.
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Location: Tokyo, Japan
Completion: 2023
Gross Floor Area: 178 sq. m
Architect: ATTA - Atelier Tsuyoshi Tane Architects
Concept: Tsuyoshi Tane
Project Team: Haruki Nakayama, Ryosuke Yago, Shota Yamamoto, Minako Matsumura, Froso Pipi, Matteo Zocche
Local Architect: Daisuke Maeda
Main Contractor: Eiko Construction
Consultants
Structural: Yasuhirokaneda.structure
MEP: Zo Design Office
Photography by Tomoyuki Kusunose, courtesy of ATTA