Westralia Plaza

Westralia Plaza comprises a twelve storey office and retail building accommodating 9800m² of A-grade office net lettable area and 760 m² of retail net lettable area, two levels of basement parking and a landscaped pedestrian plaza.

It is the first project in Western Australia to achieve a Green Building Council of Australia ‘Green Star’ certification, receiving a 4 Star rating for Office Design. The Green Building Council of Australia ‘Green Star’ rating system is a holistic assessment of sustainable initiatives possible and recognises industry ‘best practice’ for environmentally sustainable office design. The building as part of this process has been designed to achieve a 4.5 star ABGR rating.

The project creates an iconic gateway to the existing Westralia Square building and the proposed City Square development and provides a significant pedestrian thoroughfare to the Convention Centre and public transport facilities to the south. The projecting bold sculptural form of the ‘ribbon’ provides an interesting juxtaposition between this building and the adjacent Old Perth Boys School and Perth Technical College, whilst being of low scale and sympathetic in height. The 7m set back from the eastern boundary is respectful to the heritage buildings and creates a substantial civic avenue leading towards Westralia Square. The ‘ribbon’ element creates a sense of playfulness and delight along the eastern (plaza) façade and draws pedestrians towards the Entry and Foyer. This seductive form extends through the building to Mercantile Lane on the west façade, forming the high ceiling of the Foyer.

Key environmentally sustainable aspects of the design include:

– Reduced operational energy use and greenhouse gas emissions in accordance with the criteria for ABGR 4.5 star performance
– The combined use of exterior sun screens, double-glazing and the use of high performance glass reducing heat loads on the building
– Flexible and highly efficient air-conditioning systems
– High efficiency light fittings, operated with automatic control through the Building Management System
– Materials selected from low environmentally impacting sources. Additionally, materials requiring low maintenance and with known longevity are proposed
– Extensive bicycle parking and end-of-trip facilities for building occupants is provided
– Capture and re-use of fire-systems test water for irrigation
– Solar-powered hot water heating
– Enhancement of user comfort through the use of sustainable design features and elements such as shading devices, efficient lighting, improvement of  indoor air quality and the planning permits close proximity to daylight for a high percentage of occupants.

At the ground floor level high quality retail food, café and restaurant facilities are proposed, which will add a great deal of amenity for users of buildings within the immediate precinct. The restaurant will possibly be the only restaurant within the CBD with street level at grade access. This building will be a unique and iconic building with significant prominence on St Georges Terrace. It transmits a progressive ethos whilst conveying its environmental credentials.

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Commercial, Retail, Office

Project Number

Insurance Commission of WA

Completed 2010

167 Westralia Plaza, Perth

$60 million

Key Personnel
Andrew Rogerson, Paul Jones, Scott McConn, Paul Steed, Paul Aris, Stephen Pennock, Erica Thomson, Suzanne Morris

Services Provided
Masterplanning, Schematic Design, Design Development, Contract Documentation, Contract Administration, Interior design

2012 Ross Chisholm Award for Commercial Architecture

Gross Floor Area
9800 m² office, 760 m² retail

$60 million

ESD Rating
4-Star rating

Google Map Link
View on Google Maps

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Map Address
167 Westralia Plaza, Perth

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