171 Collins Street (Construction)

171 Collins Street was developed and is owned by property groups Cbus Property and Charter Hall Group.

A.G. Coombs delivered specialist HVAC and mechanical services to this 18-storey commercial facility that houses anchor tenant BHP Billiton. The project also incorporated the refurbishment of the adjacent heritage-listed Mayfair Building.

171 Collins Street was designed to reduce energy consumption by 50% and water consumption by 60%, when compared to a typical Melbourne office building. The building’s 6 Star Green Star Office Design and As-Built ratings, and its 5 Star NABERS Energy rating, are the result of a range of forward thinking initiatives and advanced design technology, which includes the highly flexible air conditioning system installed by A.G. Coombs. This includes the new Under Floor Air Distribution (UFAD) system, which was installed to service the 17 floors of premium office space and seven levels of boutique offices in the Mayfair Building.

A.G. Coombs’ lead in commissioning management has ensured optimal ongoing energy performance of all the building’s systems, and a fine-tuning committee drove several activities around control-loop stability, AHU dual-coil operation, low building thermal-load chiller operation and stratification within the office spaces.

Read more about 171 Collins Street in the Ecolibrium Magazine article, “Collins Class“.

171 Collins Street is rich in heritage, with outstanding facilities and leading environmental design principles. Constructing such a prestigious building requires a collaborative team of equally high quality. A.G. Coombs has a proven track record in successfully delivering large specialist projects, whilst complying with all standards and requirements. Their experience in UFAD systems has been a real benefit, and their ability to effectively manage the BMCS will greatly assist with achieving and maintaining the building’s sustainability objectives.

Paul Ritchie, Project Manager, Brookfield Multiplex

Project Overview

Project Name: 171 Collins Street

Location: VIC

Client: Brookfield Multiplex

Project Value: $11.1m

Year Completed: 2013

Project Type

Construction - new build (Design & Construction (D&C)


  • Successful installation of the new Under Floor Air Distribution (UFAD) system.
  • High levels of occupant comfort achieved through locally adjustable, floor mounted air diffusers.
  • The new UFAD system is a significant contributor to the building’s sustainability targets including a 50% energy consumption reduction and 5 Star NABERS Energy rating.


  • Best Commercial High Rise Development in Australia at the 2014 International Property Awards (Asia Pacific).
  • Hanson’s Green Building Award at the United Nations Association of Australia World Environment Day Awards in June 2014.
  • Sustainability Development Award at the Urban Taskforce Development Excellence Awards 2014 in July 2014.

Related Articles

April 12, 2016 in Our Experience

171 Collins Street (Fit-Out)

171 Collins Street is a Premium Grade, 6 Star Green Star and 5 Star NABERS Energy rated office building in Melbourne, and is home to anchor tenant BHP...

April 9, 2015 in News

Collins Class

A recent article in AIRAH’s Ecolibrium Magazine features Melbourne’s impressive 171 Collins Street project.

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