Greenland Centre

High-rise residential with cantilevering upper tower structure



115 Bathurst Street, Sydney


Residential apartments (470 apartments and 6 penthouses)


68 storeys (236.7m high)

Estimated cost:


Completion date:




Greenland Australia

Main contractor:

Probuild Constructions

Tower Architect:

BVN Architecture

Tower Executive Architect:

Woods Bagot

Residential Interior Architect:

Woods Bagot

Facade installation contractor:

Highlight Aluminium

Facade Manufacturer

Singyes Engineering (HK)

Facade consultant:


Facade specs & stats


custom developed unitised flush glazed curtain wall system, framed balustrade and point supported glass system, flush glazed window wall and sliding door system

Facade area:


Heaviest panel:


Total no. individual façade panels:


Total no. cast aluminium spider brackets:


Total no. sliding door sets:


A cantilevering upper tower structure


Operational awning windows

This refurbishment of a 1970s building (Sydney Water Board) included an extension of 40 residential floors. The original building was situated on a site boundary, and for each floor plate to fit the entire building needed to cantilever. The Sydney Verandah was developed for the new upper tower to provide a semi-permeable outdoor space.

  • Integrating operable windows that withstand high wind pressure
  • Developing a bespoke 3D cast-aluminium sculptural glazing bracket
  • Working with a split procurement model

Integrating operable windows in towers is a challenge. The hardware needs to allow them to self-close and latch in high wind pressures. Extensive testing ensured the windows achieved practical functionality and performance requirements.

3D cast-aluminium spider brackets

We collaborated closely with BVN to design a sculptural bracket that supported the angled-glass Sydney Verandah balcony screens. We refined the bracket to maximise the casting’s surface quality, and explored multiple finishes to achieve the highest quality outcome.

“We went through some pretty challenging times at the commencement of 2020 when China was severely impacted by COVID-19, and the response from both parties was really positive. Core was really understanding and dealt with unforeseen circumstances really well. We were able to work through challenges without too much of an impact on the project. I believe it was our open and transparent dialogue with the team that allowed for such positive outcomes.”

Sandstone Precinct

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