418
Global
Height rank
1 William Street
Brisbane
Height

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."

1
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).

259.8 m / 852 ft
2
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."

259.8 m / 852 ft
3
Occupied:

Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the highest occupied floor within the building.

179.1 m / 588 ft
1 2 3 1 William Street Outline
Floors

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).

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).

46
Below Ground

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

3
Height 259.76 m / 852 ft
Floors 46
Official Name

The current legal building name.

1 William Street
Other Names

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

Tower of Power, 1WS
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, 2016
Country

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

City

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

Postal Code
4000
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.

concrete
5.0 Star NABERS Energy Rating; 5 Star Green Star
Official Website
Height

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."

Architectural
259.76 m / 852 ft
To Tip
259.76 m / 852 ft
Occupied
179.08 m / 588 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).

46
Floors Below Ground

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

3
# of Parking Spaces

Number of Parking Spaces refers to the total number of car parking spaces contained within a particular building.

318
# of Elevators

Number of Elevators refers to the total number of elevator cars (not shafts) contained within a particular building (including public, private and freight elevators).

24
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.

126,800 m² / 1,364,864 ft²
Rankings
#
418
Tallest in the World
#
9
Tallest in Oceania
#
9
Tallest in Australia
#
2
Tallest in Brisbane
#
178
Tallest Office Building in the World
#
3
Tallest Office Building in Oceania
#
3
Tallest Office Building in Australia
#
1
Tallest Office Building in Brisbane
#
172
Tallest Concrete Building in the World
#
7
Tallest Concrete Building in Oceania
#
7
Tallest Concrete Building in Australia
#
2
Tallest Concrete Building in Brisbane
Construction Schedule
2012

Proposed

2013

Construction Start

2016

Completed

Owner
Cbus Property; ISPT Core Fund
Developer
Cbus Property
Architect
Structural Engineer
MEP Engineer
EMF Griffiths
Currie & Brown
Contractor

Certifier

McKenzie Group Consulting

Geotechnical

Butler Partners Pty Ltd

Landscape

Preservation

ERM

Property Management

JLL

Quantity Surveyor

Vertical Transportation

Cladding

CTBUH Initiatives

CTBUH Malaysia: How to Improve Design and Build Efficiency


21 July 2016 - Event

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1 September 2015 - Event

Videos

16 September 2014 | Brisbane

This presentation explores how data-driven parametric design enables the creation of enclosures that respond to highly specific environmental, behavioral and urban inputs. In the wake...

16 September 2014 | Brisbane

This presentation explores how data-driven parametric design enables the creation of enclosures that respond to highly specific environmental, behavioral and urban inputs. In the wake...

21 July 2016

CTBUH Malaysia: How to Improve Design and Build Efficiency

CTBUH Malaysia held its inaugural event in the Malaysian Petroleum Club at Petronas Towers, kindly supported by KLCC and Turner International Malaysia.

1 September 2015

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CTBUH Australia held its first national symposium in Brisbane entitled “How are Cities Responding to Urbanism?” where both local and international speakers presented.

5 March 2014

CTBUH Australia Hosts Emerging Tech Breakfast in Brisbane

The first Emerging Technologies Breakfast Seminar" of the CTBUH Australia Chapter, Brisbane Committee, was attended by more than 150 people.