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Height: Architectural 84.9 m / 279 ft
Height: Occupied 74.5 m / 244 ft
Height: To Tip 84.9 m / 279 ft
Height: Observatory 78.2 m / 257 ft
Floors Above Ground 22
Floors Below Ground 1
# of Elevators 3
Tower GFA 7,000 m² / 75,347 ft²


Official Name 41X
Other Names AIA Headquarters, 41 Exhibition Street
Structure Type Building
Status Completed
Country Australia
City Melbourne
Street Address & Map 41 Exhibition Street
Postal Code 3000
Building Function office
Structural Material concrete
Energy Label 5 Star Green Star
Proposed 2010
Construction Start 2012
Completion 2014
Official Website 41x

Companies Involved

Owner/Developer Australian Institute of Architects
Design Lyons
Structural Engineer
Design Winward Structures
MEP Engineer
Design AECOM
Project Manager DPPS Projects
Main Contractor Hickory Group
Other Consultant
• Fire Aurecon
• Quantity Surveyor Davis Langdon

About 41X

The 41X project was developed by the Australian Institute of Architects to create new space for its long-term use in the center of Melbourne. The building accommodates a dense program on a small site area, with rental offices above the headquarters and public display area for the AIA. The small floor plate enables small businesses to create their own identity within the building. As opposed to the common trend of moving to low-rise, large floor-plate buildings, this development offers boutique-sized floor plates of 280 square meters each, on a site area of 330 square meters.

As a typical tower/podium setback arrangement was impossible, the design “chisels” the lower levels to create intimate public spaces and conceptually draw the city street up into the building through a feature stair at the perimeter. The building’s “Sustainability Charter” will be incorporated in to the owner’s corporation rules and mandates the use of 100 percent green power and minimum commitments to carbon offsetting through the Australian Carbon Trust.

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