Central Government Building No. 7

A 33-story, approximately 157-meter government office building completed in 2007 in Kasumigaseki. Japan's first government facility developed using the PFI method, it forms part of the Kasumigaseki Common Gate complex together with a 38-story private-sector tower.

Use

Office tower

Area

Chiyoda City

Completed

2007

Floors

33 above ground, 2 below

Height

156 m

Developer

Nippon Steel Engineering (PFI project operator)

Architect

Kume Sekkei, Taisei Corporation, Nippon Steel

Japan’s First PFI Government Building, in the Heart of Kasumigaseki

In October 2007, an experiment in how governments build took shape in Kasumigaseki. Central Government Building No. 7 — the East Wing of the Kasumigaseki Common Gate complex — is a 33-story, 2-basement tower standing approximately 157 meters tall, housing the Ministry of Education, Culture, Sports, Science and Technology among other agencies. Adjacent to it stands the West Wing (Kasumigaseki Common Gate West), a 38-story, approximately 176-meter private-sector office tower. Together, the two buildings form the Kasumigaseki Common Gate, a complex developed under the Kasumigaseki R7 Project. Design was handled by Kume Sekkei, Taisei Corporation, and Nippon Steel.

The project’s defining characteristic is that it was the first application of PFI — Private Finance Initiative — to a national government office building in Japan. Under PFI, a private-sector entity takes charge of financing, design, construction, and facility management, a significant departure from conventional public procurement. Choosing to test this model in Kasumigaseki, the administrative core of the Japanese government, was itself a statement about rethinking how public facilities are built and operated.

Where the Government District Opens to the Private Sector

At ground level, the East and West wings are connected by a shared atrium and pedestrian circulation routes, weaving the public and private components into a single spatial experience. From the street, the complex reads as an ensemble rather than two separate buildings. This blurring of boundaries — a government tower and a commercial tower sharing a forecourt — was a departure from Kasumigaseki’s historically uniform landscape of ministry buildings.

Located near the border with Toranomon, the Kasumigaseki Common Gate stands at the southern edge of the government district, a zone that has since seen accelerating redevelopment with the expansion of the Toranomon Hills complex nearby. Seen in this light, the 2007 project was an early marker of a much larger shift.

Summary

Central Government Building No. 7, completed in 2007 as a 33-story tower rising approximately 157 meters, holds a singular place in the history of Japanese public construction as the first PFI-developed national government facility. Paired with its private-sector twin in the Kasumigaseki Common Gate, it offers a concrete example of how public and private development can share the same block. Walk from Toranomon Station toward Kasumigaseki and the twin towers come into view — a landmark at the edge of Japan’s administrative heart, and a quiet trace of a new model for building it.

Related articles: Kasumigaseki Building / Toranomon Hills Business Tower

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