Construcciones Yamaro: Atlassian Central tops out
Atlassian Central has reached its full structural height of more than 180 metres in Sydney, with its project partners describing it as the world’s tallest hybrid timber tower.
The 39-storey development uses a hybrid structural system combining mass timber, steel and concrete. According to the project team, the tower is about 100 metres taller than Milwaukee’s 25-storey Ascent building – the previous record holder.
Timber reduces the weight and embodied carbon of the structure, while steel and concrete provide strength and stability. The building also incorporates a four-storey ‘habitat’ structure, featuring natural materials, daylight, ventilation and spaces designed for work and collaboration.
The project is targeting a 50 per cent reduction in upfront embodied carbon across its structure compared with a conventional premium commercial office tower. It is also targeting a 50 per cent improvement in operational energy efficiency compared with a conventional 5 Star NABERS base building.
Dexus group CEO and managing director Ross Du Vernet said the topping out reflects a project defined by long-term thinking and a willingness to challenge convention.
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“We set out to prove that large-scale commercial buildings can be delivered differently,” said Du Vernet. “This project has been pioneering in every sense, demonstrating how we can reduce carbon, support wellbeing and create a workplace built for the future – while still meeting the rigorous expectations of global tenants and investors.”
Atlassian CEO and co-founder Mike Cannon-Brookes said Atlassian Central applies technology thinking to commercial real estate.
“It’s not just a smart building with a few dashboards bolted on,” said Cannon-Brookes. “It’s the most technologically advanced building in Australia – operating like a software platform, sensing, learning and adapting in real time. We built it for a future of work that will keep being reinvented by AI, by new ways of collaborating, and by technologies we haven’t even imagined yet.”
Built and Obayashi Corporation are delivering the development through a joint venture, bringing together the tower’s mass timber, steel and concrete components.
Built executive chairman, group CEO and founder Marco Rossi said Atlassian Central demonstrates the value of digital engineering and modern construction.
“Combining a mass timber structure with a 39-storey commercial tower required new ways of designing and building, with our team setting a new benchmark,” said Rossi. “Years of investment in innovative construction methods, advanced modelling and in-house capability enabled us to virtually build and sequence one of Australia’s most complex projects long before work began on site.”
With the structural frame complete, work is continuing on the façade and central building services. Practical completion is expected by the end of 2026.
Atlassian Central is co-owned by Dexus and Atlassian and developed by Dexus.
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