Ultra-Skinny Mixed-Use Tower Approved in Brisbane
Brisbane, Australia 19 August 2019
The development application for an ultra-skinny mixed-use tower located in Brisbane’s CBD was recently approved.
The 30-story development by Sydney-based Lionmar Holdings will sit atop the heritage-listed Grosvenor Hotel at 320 George Street, on the corner of George and Ann Streets.
Lionmar, which purchased the site for AU$4.4 million (US$2.98 million) in November 2010, submitted the development application to the local council in December of 2016.
The mixed-use development, located in Brisbane’s legal precinct, will be just 9.5 meters wide and 30 stories tall, making the tower one of the narrowest buildings of a comparable height in the Brisbane area.
The building, designed by Hames Sharley, will feature 9,100 square meters of boutique commercial office space, three levels of restaurant space, two apartments, and 17 parking spaces.
The development will also feature a rooftop bar on level 29 with views across the Brisbane River, South Brisbane, and the CBD, as well as a 400-square-meter city room and garden on level 14.
Hames Sharley principal Jason Preston said the building’s narrowness meant the design needed to be innovative in dealing with the challenges of structural tension, compression, and stability.
“At just 9.5 meters wide and 30 stories tall, we believe this to be the narrowest building of a comparable height in Brisbane,” Preston said.
“The building will feature a hybrid exoskeletal bracing system, as both a structural necessity and as a visual anchor for the building.”
“Given the building’s four elevators are designed as a side core to the west boundary wall, a building of this kind will twist and sway differently than a traditional tower, which is usually anchored by a number of central elevators, stair cores, and large floor plate.”
The building will feature a hybrid exoskeletal bracing system, as both a structural necessity and as a visual anchor for the building.
Last year, the council outlined several concerns about the height and scale of the proposed tower, as well as the need for construction details that would not compromise the heritage value of the 140-year-old hotel at the current site.
The developer agreed to reduce the tower site coverage from the initially proposed 68.5 percent to 67.9 percent, and enlisted the expert guidance of heritage architect Malcolm Elliot from Vault Heritage Consulting.
Preston said Hames Sharley’s design incorporated the client’s desire for a grand entrance that honored the heritage status of the existing building.
Construction of the development is expected to start in December 2019. Once complete, the building is expected to earn premium A-grade commercial development status, due to its sustainability characteristics, high-end lobby finishes, express elevators, and high-performing services.
For more on this story, go to The Urban Developer.