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Office · Shinagawa, Tokyo · Construction

OBAYASHI — Shinagawa: a builder’s head office with an eleven-storey void

Obayashi, one of Japan’s major general contractors, works from a head office in Shinagawa. Through the centre of the building runs the Interforum, a void from the 18th to the 28th floor with stairs between them. The tour climbs from the entrance on 3F to an atrium on 30F, with a barber’s shop on the way.

Company OBAYASHI CORPORATIONLocation Shinagawa, TokyoFloors shown 3F–30FInterforum 18F–28F void with stairsWebsite obayashi.co.jp ↗
The Interforum void
The Interforum void

Concept

Breaking up the stack

A high-rise office usually cuts people off floor by floor. At the centre of the building the Interforum opens 18F to 28F into one void, with stairs to move freely between them.

01 · Entrance (3F)

Art at the gates

Reception is on 3F: a wide, bright space with artworks. Staff tap their ID cards and visitors show a QR code issued in advance to pass the gates.

The entrance on 3F
The entrance on 3F

02 · Meetings (14F)

A different artwork in every room

14F is lined with meeting rooms and open meeting spaces for visitors and staff, each room with a different work of art, plus a seminar room for briefings and large meetings.

The meeting floor
The meeting floor

03 · Workspace (22F)

Free address, by division

22F is the standard work floor. Free spaces and one-person booths are arranged to suit each division, and free address makes it easy to talk with many people.

The work floor
The work floor

04 · Canteen (23F)

Lunch with a view

The canteen seats many people, has a shop and a fine view, with art on the walls.

The canteen
The canteen

05 · Services (24F)

A barber and a clinic

24F holds a barber’s shop, a health management centre with a clinic, and a mothers’ room, alongside work space.

The barber’s shop
The barber’s shop
The health management centre
The health management centre

06 · Upper floors (26F–30F)

Producing whole towns

26F is home to the development division, where architects and administrators produce whole districts. On 30F, an atrium holds sculptures and a large model of the Shinagawa Station area the company has helped develop, beside a restaurant.

The development division on 26F
The development division on 26F
The atrium on 30F
The atrium on 30F
CompanyOBAYASHI CORPORATION
Official websiteobayashi.co.jp ↗
Design[to confirm]
Photography© OBAYASHI (from the company’s recruiting site)
SourceObayashi recruiting site, “OBAYASHI FIELD TRIP 360° — Shinagawa office”, re-reported by WALL
PublishedSeptember 2026
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