Yoshinogawa Valley Reforma do Edifício-Sede por Wataru Sato

O design Yoshinogawa Valley Reforma do Edifício-Sede por Wataru Sato é um vencedor altamente estimado do prestigioso 2026 A' Design Award de Bronze na Categoria de Competição Design de Arquitetura, Edifícios e Estruturas.

BronzeArquitetura· 2026

Yoshinogawa Valley Reforma do Edifício-Sede

por Wataru Sato

Cliente: KITAOKA Group

Vencedor do A' Design Award de Bronze na Categoria Arquitetura

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O Design

Sobre Yoshinogawa Valley Reforma do Edifício-Sede

Este projeto consiste na reforma de um edifício de escritórios pré-fabricado com 40 anos, realizada sem demolição. Um vazio linear de 50 metros é inserido no centro da estrutura existente, alinhado ao eixo leste-oeste do rio Yoshino, reorganizando o edifício em duas alas, norte e sul. Denominada Vale do Rio Yoshino, essa operação espacial constitui a espinha dorsal da arquitetura. Uma clarabóia voltada para o norte garante iluminação natural estável, enquanto a ventilação passiva é gerada por diferenças de altura e de pressão. Ao reorganizar o edifício, o projeto evita dividir os valores que ele sustenta.

O Reconhecimento

Sobre o A' Design Award de Bronze

Yoshinogawa Valley Reforma do Edifício-Sede conquistou o A' Design Award de Bronze, um reconhecimento altamente prestigiado atribuído a designs notáveis que se distinguem pela criatividade, engenho e perspicácia. Os vencedores do Bronze são artefactos amplamente habilidosos e surpreendentemente criativos que comprovam a vasta experiência, imaginação e capacidade de iniciativa dos seus designers. Espera-se que Yoshinogawa Valley Reforma do Edifício-Sede seja um objeto muito considerado, admirado e estimado, notavelmente profissional e inovador. Este design vencedor do A' Design Award de Bronze incorpora as melhores práticas em arte, ciência, design e tecnologia e é excelente pela sua atenção ao detalhe. Yoshinogawa Valley Reforma do Edifício-Sede satisfaz esplendidamente necessidades, toca desejos, encanta sentimentos e desperta curiosidade.

Por Trás do Design

Kit de Imprensa

Créditos, membros da equipa e detalhes técnicos fornecidos pelo designer.

Propriedades Únicas: Inspired by the Yoshinogawa River, the design translates the structure of a valley into architecture. By dividing the existing building into two volumes and inserting a linear void, a valley-like interior is created.
A 50-meter skylight brings daylight inside, while the void enables ventilation, greenery, and social interaction. This configuration integrates environmental elements into the workplace.
Through renovation, the design reinterprets an existing office and proposes a new spatial model.
Dimensões e Embalagem: A valley-like void and continuous skylight are introduced at the center of a 50-meter prefabricated office building. The two-story void brings daylight to the ground floor and enhances natural ventilation.
A 7-meter Benjamin fig tree is placed at the center, visible from both levels. Planting along the void forms a layered green environment connected to the exterior.
Existing structure and finishes are retained, creating a composition where old and new materials coexist.
Etiquetas: Prefabricated office renovation, open lounge, atrium and skylight, regional architecture, nature-inspired workspace, Yoshino River
Tecnologia de Produção: The project renovates an existing prefabricated office building without demolition.
A central valley-like void integrates daylight, ventilation, and greenery. Continuous skylights provide stable north light, while passive ventilation is driven by height and pressure differences.
Spatial organization is redefined as an environmental system, reducing reliance on mechanical equipment. Existing structure and finishes are retained, forming a layered expression and a sustainable model for reuse.
Desafio de Design: The primary challenge was to renew the environmental and social value of a deteriorated prefabricated office without demolition or new construction.
Introducing a skylight and central void into an enclosed structure required coordination of structural, safety, and cost constraints.
Rather than relying on equipment, the design redefines spatial organization as an environmental system.
The project shows that architectural operations can generate new value within existing buildings.
Pesquisa: This research examines how renovation can achieve environmental performance comparable to new construction.
A skylight and central void introduce daylight and passive ventilation, reducing reliance on mechanical systems.
Monitoring shows that artificial lighting is unnecessary during daytime and HVAC demand is reduced. Annual energy decreased by about 73,000 kWh, with savings of 65% in lighting and 30% in air conditioning.
The project presents a replicable model for sustainable renovation.
Inspiração: The project draws inspiration from the Yoshinogawa River, known as the Mother River of Tokushima.
Rather than referencing its form directly, the design interprets the river as a spatial structure.
By inserting a linear void through the existing building, the architecture transforms the logic of a valley into an interior condition, bringing light, wind, and greenery deep into the space, while also inviting relationships among people, families, and the local community.
Duração do Projeto: The project started in January 2023 in Miyoshi Town, Tokushima Prefecture, Japan, and was completed in August 2024.
Fluxo de Operação: The building transforms a closed office into an open environment accessible to families and the local community.
The central valley acts as a social axis supporting movement, staying, and interaction. The ground floor serves as a shared space, while the upper floor provides flexible work areas.
Users are not assigned fixed workplaces but choose spaces as needed. Through everyday use, the project encourages informal encounters and redefines how work and social life coexist.
Créditos de Imagem: Image #1: Photographer Keita Yamamoto (Architectural Photography), Kitaoka Group Headquarters Renovation, 2024.
Image #2: Photographer Keita Yamamoto (Architectural Photography), Kitaoka Group Headquarters Renovation, 2024.
Image #3: Photographer Keita Yamamoto (Architectural Photography), Kitaoka Group Headquarters Renovation, 2024.
Image #4: Photographer Keita Yamamoto (Architectural Photography), Kitaoka Group Headquarters Renovation, 2024.
Image #5: Photographer Keita Yamamoto (Architectural Photography), Kitaoka Group Headquarters Renovation, 2024.