NBF Osaki Building Download PDF

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Height: Occupied
118.4 m / 389 ft
Height: To Tip
134 m / 440 ft
Height: Architectural
132.9 m / 436 ft
NBF Osaki Building Outline
Floors Above Ground
Floors Below Ground
Development GFA
124,041 m² / 1,335,166 ft²


Official Name NBF Osaki Building
Other Names Sony City Osaki
Structure Type Building
Status Completed
Country Japan
City Tokyo
Street Address & Map 2-10-1 Osaki, Shinagawa-ku
Building Function office
Structural Material composite
Construction Start 2009
Completion 2011

Companies Involved

Owner Mizuho Trust & Bank, Ltd.; Nippon Building Fund, Inc.
Structural Engineer
MEP Engineer
Main Contractor Kajima Corporation

About NBF Osaki Building

This building houses Sony’s R&D department, taking the form of a thin vertical plate to ensure good views, while minimizing the heat island effect by positioning its narrow sides against prevailing winds. The building was conceived as a massive cooling device. Owing to the narrowness of the building, the offices have flexible, open plans without columns. All the building’s mechanisms are integrated into the facades, which were designed in response to the environment.

The eastern façade is covered with specialized ceramic louvers that guide rainwater through the system to act as enormous radiator for cooling the environment. Thus, instead of contributing to the heat island effect, the building operates as an urban “cool spot.” This is the first building to install Bioskin, a simple system that circulates rain water by using electricity generated by solar power through unglazed terracotta pipes arranged along the façade vaporizes, cooling down the building itself as well as the surrounding area.


2014 Awards - Session 2 Q&A
6 Nov 2014 – Chair: David Malott, KPF

Interview: BioSkin
6 Nov 2014 – Tomohiko Yamanashi, NIKKEN SEKKEI LTD

Tall Building Innovation Award: An Evapo-transpiration Innovation for Cities of the Future: BioSkin
6 Nov 2014 – Tomohiko Yamanashi, Nikken Sekkei

Research Papers

Innovative Façade Systems Of Japan
May 2015 – CTBUH Journal, 2015 Issue II

CTBUH Awards

Innovation Award 2014 Winner
CTBUH Awards 2014