International Towers Sydney Tower 3

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Height: Occupied
157 m / 515 ft
Height: To Tip
169 m / 554 ft
Height: Architectural
169 m / 554 ft
International Towers Sydney Tower 3 Outline
Floors Above Ground
Floors Below Ground
Tower GFA
90,105 m² / 969,882 ft²
# of Parking Spaces


Official Name International Towers Sydney Tower 3
Name of Complex Barangaroo South
Other Names T3, Barangaroo South, C5
Structure Type Building
Status Completed
Country Australia
City Sydney
Street Address & Map Hickson Road
Postal Code 2000
Building Function office
Structural Material concrete
Energy Label 6 Star Green Star
Proposed 2010
Construction Start 2013
Completion 2016
Rankings Click arrows to view the next taller/shorter buildings
Regional Ranking #74 Tallest in Oceania
National Ranking #71 Tallest in Australia
City Ranking #20 Tallest in Sydney

Companies Involved

Owner/Developer Lendlease Corporation
Design Rogers Stirk Harbour + Partners
Structural Engineer
Design Arup
MEP Engineer
Design Norman Disney & Young
Main Contractor Lendlease Corporation
Other Consultant
• Aviation AvLaw Pty Ltd
• Landscape Aspect Studios
• Property Management JLL
• Urban Planner JBA Urban Planning Consultants Pty Ltd
• Wind Cermak Peterka Petersen (CPP), Inc.
Material Supplier
• Ceiling Studco Australia Pty Ltd
• Elevator Schindler
• HVAC Automatic Heating Global Pty Ltd
• Interior Partition Studco Australia Pty Ltd

About International Towers Sydney Tower 3

Constructed on a former container port, International Towers Sydney Tower 3 was part of the three building International Towers complex and part of the larger redevelopment of Barangaroo South into a new waterfront extension of Sydney’s Central Business District. International Towers was conceived as three sibling buildings with varying heights and specific design features to provide each building with its own identity. One of the identity markers is the in the arrangement and color of the vertical solar shades applied to the exterior facades, improving the thermal performance of the buildings as they were comprehensively designed with the context of their surroundings. The elevator cores were positioned to the northern edge of each building footprint, providing for expansive office floor plates while also further reducing energy consumption through a reduction of glazing on each building’s northern exposure.

Designing workspaces around social interaction was a key part of the design process, providing communal meeting areas beside the elevator cores interlinking workers throughout each building, while the entirety of the roofs, both at the podium and uppermost levels, are also available as open air terraces, courtesy of utilizing a centralized mechanical plant to efficiently provide services to all three buildings. At street level, all three buildings share a common basement and single entry point for vehicles in order to enhance the pedestrian friendliness of where the towers meet the ground.


Interview: Ivan Harbour
31 Oct 2017 – Ivan Harbour, Rogers Stirk Harbour + Partners

Interview: Karl Fender
31 Oct 2017 – Karl Fender, Fender Katsalidis Architects

Research Papers

Connecting the City: People, Density & Infrastructure
30 Oct 2017 – CTBUH Journal, 2017 Issue IV

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