1693
Global
Height rank

Japan Post Tower

Tokyo
Height 200.1 m / 656 ft
Floors 40
Official Name
The current legal building name.

Japan Post Tower

Other Names
Other names the building has commonly been known as, including former names, common informal names, local names, etc.

JP Tower

Type
CTBUH collects data on two major types of tall structures: 'Buildings' and 'Telecommunications / Observation Towers.' A 'Building' is a structure where at least 50% of the height is occupied by usable floor area. A 'Telecommunications / Observation Tower' is a structure where less than 50% of the structure's height is occupied by usable floor area. Only 'Buildings' are eligible for the CTBUH 'Tallest Buildings' lists.

Building

Status
Completed
Architecturally Topped Out
Structurally Topped Out
Under Construction
Proposed
On Hold
Never Completed
Vision
Competition Entry
Canceled
Proposed Renovation
Under Renovation
Renovated
Under Demolition
Demolished

Completed

Completion

2012

Country
The CTBUH follows the United Nations's definition of Country, and thus uses the lists and codes established by that organization.

Japan

City
The CTBUH follows the United Nations's definition of City, and thus uses the lists and codes established by that organization.

Tokyo

Function
A single-function tall building is defined as one where 85% or more of its usable floor area is dedicated to a single usage. Thus a building with 90% office floor area would be said to be an "office" building, irrespective of other minor functions it may also contain.

A mixed-use tall building contains two or more functions (or uses), where each of the functions occupy a significant proportion of the tower's total space. Support areas such as car parks and mechanical plant space do not constitute mixed-use functions. Functions are denoted on CTBUH "Tallest Building" lists in descending order, e.g., "hotel/office" indicates hotel function above office function.

office

Structural Material
Steel
Both the main vertical/lateral structural elements and the floor spanning systems are constructed from steel. Note that a building of steel construction with a floor system of concrete planks or concrete slab on top of steel beams is still considered a “steel” structure as the concrete elements are not acting as the primary structure.

Reinforced Concrete
Both the main vertical/lateral structural elements and the floor spanning systems are constructed from concrete which has been cast in place and utilizes steel reinforcement bars.

Precast Concrete
Both the main vertical/lateral structural elements and the floor spanning system are constructed from steel reinforced concrete which has been precast as individual components and assembled together on-site.

Mixed-Structure
Utilizes distinct systems (e.g. steel, concrete, timber), one on top of the other. For example, a steel/concrete indicates a steel structural system located on top of a concrete structural system, with the opposite true of concrete/steel.

Composite
A combination of materials (e.g. steel, concrete, timber) are used together in the main structural elements. Examples include buildings which utilize: steel columns with a floor system of reinforced concrete beams; a steel frame system with a concrete core; concrete-encased steel columns; concrete-filled steel tubes; etc. Where known, the CTBUH database breaks out the materials used in a composite building’s core, columns, and floor spanning separately.

steel

Official Website

Japan Post Tower

Height
Architectural
Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the architectural top of the building, including spires, but not including antennae, signage, flag poles or other functional-technical equipment. This measurement is the most widely utilized and is employed to define the Council on Tall Buildings and Urban Habitat (CTBUH) rankings of the "World's Tallest Buildings."

200.1 m / 656 ft

To Tip
Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the highest point of the building, irrespective of material or function of the highest element (i.e., including antennae, flagpoles, signage and other functional-technical equipment).
200.1 m / 656 ft
Occupied
Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the highest occupied floor within the building.
173.0 m / 568 ft
Floors Above Ground
The number of floors above ground should include the ground floor level and be the number of main floors above ground, including any significant mezzanine floors and major mechanical plant floors. Mechanical mezzanines should not be included if they have a significantly smaller floor area than the major floors below. Similarly, mechanical penthouses or plant rooms protruding above the general roof area should not be counted. Note: CTBUH floor counts may differ from published accounts, as it is common in some regions of the world for certain floor levels not to be included (e.g., the level 4, 14, 24, etc. in Hong Kong).

40

Floors Below Ground
The number of floors below ground should include all major floors located below the ground floor level.

4

Tower GFA
Tower GFA refers to the total gross floor area within the tower footprint, not including adjoining podiums, connected buildings or other towers within the development.

220,000 m² / 2,368,060 ft²

Rankings
#
1693
Tallest in the World
#
40
Tallest in Japan
#
27
Tallest in Tokyo
#
765
Tallest Office Building in the World
#
21
Tallest Office Building in Japan
#
18
Tallest Office Building in Tokyo
#
145
Tallest Steel Building in the World
#
47
Tallest Steel Building in Asia
#
19
Tallest Steel Building in Japan
#
13
Tallest Steel Building in Tokyo
Construction Schedule
2007

Proposed

2009

Construction Start

2012

Completed

Architect
Design

Usually involved in the front end design, with a "typical" condition being that of a leadership role through either Schematic Design or Design Development, and then a monitoring role through the CD and CA phases.

Architect of Record

Usually takes on the balance of the architectural effort not executed by the "Design Architect," typically responsible for the construction documents, conforming to local codes, etc. May often be referred to as "Executive," "Associate," or "Local" Architect, however, for consistency CTBUH uses the term "Architect of Record" exclusively.

Other Consultant

Other Consultant refers to other organizations which provided significant consultation services for a building project (e.g. wind consultants, environmental consultants, fire and life safety consultants, etc).

Façade

These are firms that consult on the design of a building's façade. May often be referred to as "Cladding," "Envelope," "Exterior Wall," or "Curtain Wall" Consultant, however, for consistency CTBUH uses the term "Façade Consultant" exclusively.

Material Supplier

Material Supplier refers to organizations which supplied significant systems/materials for a building project (e.g. elevator suppliers, facade suppliers, etc).

Owner
Japan Post
Architect
Design

Usually involved in the front end design, with a "typical" condition being that of a leadership role through either Schematic Design or Design Development, and then a monitoring role through the CD and CA phases.

Architect of Record

Usually takes on the balance of the architectural effort not executed by the "Design Architect," typically responsible for the construction documents, conforming to local codes, etc. May often be referred to as "Executive," "Associate," or "Local" Architect, however, for consistency CTBUH uses the term "Architect of Record" exclusively.

Other Consultant

Other Consultant refers to other organizations which provided significant consultation services for a building project (e.g. wind consultants, environmental consultants, fire and life safety consultants, etc).

Façade

These are firms that consult on the design of a building's façade. May often be referred to as "Cladding," "Envelope," "Exterior Wall," or "Curtain Wall" Consultant, however, for consistency CTBUH uses the term "Façade Consultant" exclusively.

Material Supplier

Material Supplier refers to organizations which supplied significant systems/materials for a building project (e.g. elevator suppliers, facade suppliers, etc).

CTBUH Initiatives

Helmut Jahn Discusses His Lifetime's Work

18 October 2012 - Awards Symposium Video

Videos

11 June 2013 | Tokyo

City-Scapes: Transformations + Interventions

In our journey from Chicago to New York, the United States, South Africa, Europe, the Mideast to Asia/China, the tall building has always been tied...

About Japan Post Tower

This new high-rise is built on, and adjacent to, the historic 1931 Central Post Office, next to the busy Marunouchi Station in central Tokyo. It incorporates the existing façade as the base of the building, creating a retail galleria, forming the interface to the urban scale of the adjacent plaza. The tower integrates the lines of the existing building within its façade, creating continuity between the two parts.

The tower employs a number of sustainable strategies. The team eschewed using a ceramic frit coatings on the atrium skylight glass panels, instead using photo-voltaic panels with 10 percent light transmittance. This move affords control of solar heat gain in the atrium, while absorbed radiation is converted into electricity. The high-performance building envelope integrates a triple-glazed ventilated cavity wall that reduces heat gain in warm seasons and heat loss in cooler seasons. Automated sun shades are located within the cavity to reflect solar radiation and release the heat back into the cavity from where it can be vented out or maintained to reduce heat loss during the winter.

11 June 2013 | Tokyo

City-Scapes: Transformations + Interventions

In our journey from Chicago to New York, the United States, South Africa, Europe, the Mideast to Asia/China, the tall building has always been tied...

18 October 2012 | Tokyo

Lynn S. Beedle Lifetime Achievement Award: Archi-neering Tall

Never predictable, never simplistic, Helmut Jahn has developed a complex portfolio of iconic buildings around the world. Standout projects include the Sony Center in Berlin,...