Wedge House Rezidence by Kiyoshi Sugimoto

Wedge House Rezidence by Kiyoshi Sugimoto is a highly esteemed winner of the very prestigious 2025 Bronzová cena A' Design Award in Architektura Competition Category.

BronzArchitektura· 2025

Wedge House Rezidence

by Kiyoshi Sugimoto

Client: Masato Ikuta

Bronzová cena A' Design Award Winner in Architektura Category

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Verified Award Winner

Verify Award Status for #162815

Visit Site View at A' Design Award Press Release Award Badge

Colors

The Design

About Wedge House Rezidence

Wedge House je třípodlažní rezidence postavená na úzkém pozemku se strmým svahem ve městě Ikeda v Japonsku. Klínovitý příčný řez umisťuje největší podlaží nahoru a nejmenší pod úroveň terénu, takže na starou opěrnou zeď nepůsobí žádná dodatečná síla. Obě horní podlaží jsou vyrobena ze dřeva a suterén je ze železobetonu. Východní a západní stěny jsou opatřeny stříbrně lakovanými ocelovými deskami, které podpírají vykonzolované podlaží a rámují výhled směrem na jih. Obytný prostor ve druhém podlaží se otevírá na terasu s širokým výhledem.

The Recognition

About the Bronzová cena A' Design Award

Wedge House Rezidence je vítězem Bronzové ceny A' Design Award, vysoce prestižního uznání udělovaného vynikajícím designům, které se vyznačují kreativitou, vynalézavostí a bystrostí. Bronzoví vítězové jsou hojně zručné a nápadně kreativní artefakty, které dosvědčují rozsáhlé zkušenosti, představivost a vynalézavost svých designérů. Očekává se, že Wedge House Rezidence bude vysoce ceněným, obdivovaným a milovaným předmětem, pozoruhodně profesionálním a inovativním. Tento design, který získal Bronzovou cenu A' Design Award, zahrnuje osvědčené postupy v umění, vědě, designu a technologiích a vyniká pozorností k detailu. Wedge House Rezidence nádherně uspokojuje potřeby, dotýká se tužeb, okouzluje city a oslovuje zvědavost.

Behind the Design

Press Kit

Credits, team members and technical details provided by the designer.

Unique Properties: The site has a nice view, but it is narrow and has a steep slope, and due to area regulations, the building coverage ratio is a strict 40%.
In order to meet the required area to comply with strict regulations, we adopted a three-story mixed structure with two floors above ground made of wood and one floor below ground made of reinforced concrete.
The building has a wedge-shaped shape, with the second floor, which has the best view, as the living space and the largest area, and the area decreases as you go to the lower floors to avoid applying force to the retaining wall.
Dimensions & Packaging: Total floor area 111.16㎡　Width 5560mm x Depth 11000mm x Height 10190mm
Tags: Slopingland structure protruding structure wedge Basement mountainside
Production Technology: The east and west walls are finished with silver galvalume steel plates, which support the cantilevered floor that protrudes from the basement, and at the same time serve to frame the view to the south.
The basement is a bedroom with a sense of security that feels like it's nestled on a slope. The first floor has a water area and a study with a view of the greenery of the park behind the deep eaves. From the sky terrace of the LDK on the 2nd floor, you can enjoy a panoramic view of the Osaka plains. This is a house where you can enjoy the three different slopes of Mt. Satsuki.
Design Challenge: Stable structural design with an underground shape that does not apply force to old retaining walls on a narrow, steeply sloped site, and a protruding structure for the wooden upper building.
Research: Research on stable structures with protruding shapes in wooden buildings
Inspiration: The site is located at the foot of Mt.Satsuki in Ikeda City, Osaka Prefecture, Japan. The site was narrow, and more than half of the site was on a steep slope.
Additionally, the site is located on an old, tall retaining wall, so the building had to be constructed in a way that would not put stress on the retaining wall.
Therefore, the building's cross-sectional shape is wedge-shaped, with the basement being the smallest and increasing as the floors rise.
Project Duration: Design for the project began in September 2022 at a site in Ikeda City, Osaka Prefecture, and was completed in June 2024.
Operation Flow: A basement with a shape that does not apply force to the old retaining wall, and a pop-out floor structure for the upper wooden building to maintain the required area.
Team Members: KIYOSHI SUGIMOTO
Image Credits: All photos and videos Hirofumi Imanishi