Yoshinogawa Valley Baş edara binasynyň durkuny täzelemek by Wataru Sato

Yoshinogawa Valley Baş edara binasynyň durkuny täzelemek by Wataru Sato is a highly esteemed winner of the very prestigious 2026 A' Design Award Bürünç Baýragy in Binagärlik, Bina we Desga Dizaýny Competition Category.

BürünçBinagärlik· 2026

Yoshinogawa Valley Baş edara binasynyň durkuny täzelemek

by Wataru Sato

Client: KITAOKA Group

A' Design Award Bürünç Baýragy Winner in Binagärlik Category

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The Design

About Yoshinogawa Valley Baş edara binasynyň durkuny täzelemek

Bu taslama 40 ýyllyk öňünden taýýarlanan gurnama ofis binasynyň ýykylman durkunyň täzelenmegidir. Bar bolan gurluşyň merkezine Ýosino derýasynyň gündogar-günbatar okuna deňleşdirilen 50 metrlik göni boşluk goşulyp, bina demirgazyk-günorta iki ganata täzeden guralýar. Ýosino derýasynyň jülgesi diýlip atlandyrylan bu giňişlik çözgüdi binagärligiň esasy sütünini emele getirýär. Demirgazyga gönükdirilen ýokarky aýna üçek durnukly gün ýagtylygyny üpjün edýär, beýiklik we basyş tapawutlary arkaly bolsa passiw howa çalşygy döredilýär. Binany täzeden guramak bilen, taslama onuň goldaýan gymmatlyklarynyň bölünmeginiň öňüni alýar.

The Recognition

About the A' Design Award Bürünç Baýragy

Yoshinogawa Valley Baş edara binasynyň durkuny täzelemek A' Design Award Bürünç Baýragynyň ýeňijisidir; bu döredijilik, ussatlyk we ýiti akyl bilen tapawutlanýan tapawutly dizaýnlara berilýän aşa abraýly ykrarnamadyr. Bürünç ýeňijileri dizaýnerleriniň giň tejribesini, hyýalyny we tapawutlylygyny tassyklaýan örän ussat we geň galdyryjy derejede döredijilikli eserlerdir. Yoshinogawa Valley Baş edara binasynyň durkuny täzelemek uly baha berilýän, haýran galynýan we söýülýän, üns çekiji derejede hünärmenlikli we täzelikçi zat bolmagy garaşylýar. A' Design Award Bürünç Baýragyny gazanan bu dizaýn sungatda, ylymda, dizaýnda we tehnologiýada iň oňat tejribeleri öz içine alýar we jikme-jiklige edýän üni bilen ajaýypdyr. Yoshinogawa Valley Baş edara binasynyň durkuny täzelemek zerurlyklary ajaýyp derejede kanagatlandyrýar, isleglere degýär, duýgulary özüne çekýär we gyzyklanmany çekýär.

Behind the Design

Press Kit

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

Unique Properties: 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.
Dimensions & Packaging: 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.
Tags: Prefabricated office renovation, open lounge, atrium and skylight, regional architecture, nature-inspired workspace, Yoshino River
Production Technology: 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.
Design Challenge: 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.
Research: 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.
Inspiration: 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.
Project Duration: The project started in January 2023 in Miyoshi Town, Tokushima Prefecture, Japan, and was completed in August 2024.
Operation Flow: 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.
Image Credits: 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.