Australia’s Data Centre Construction Starts Hit A$18.2 Billion, Surpassing Offices and Warehouses Combined

The Building Site Has Become the Front Line of the AI Economy

Australia’s data centre boom is no longer visible only in investment announcements or grid connection queues. It is now measurable in concrete, steel, and construction labour. Analysis of Australian Bureau of Statistics (ABS) Building Activity data shows that about A$18.2 billion of data centre-related work was started in 2025–26, compared with A$10 billion on new warehouses and A$7.3 billion on new offices. For the first time, data centres have become the largest category of private non-residential building commencements in the country, up from 14th place in 2019–20.

Construction Activity Is Tripling—but Completion Lags

The scale of the construction pipeline is remarkable by any historical standard. Data centre construction starts tripled to A$18.2 billion in 2025–26, and at the end of June, A$18.3 billion of work in the category was still to be built. Yet the pace of delivery is slower than the pace of commencement. About A$6.4 billion of construction work was done in the category over the most recent financial year, while projects worth just A$2.4 billion were completed. That gap between starts and completions reflects the complexity of modern data centre construction: larger campuses, higher power densities, liquid cooling systems, and extended grid connection timelines all add to build duration.

The Economic Ripple Effects

The construction boom is having macroeconomic consequences beyond the data centre sector. The Reserve Bank of Australia has noted that data centre construction has been one of the forces fuelling sticky inflation, contributing to interest rate pressures and, in turn, affecting property prices. The sector’s demand for tradespeople, electrical equipment, and cooling infrastructure is competing with other major infrastructure projects, creating supply chain bottlenecks that can delay delivery and inflate costs.

For infrastructure companies, the construction phase represents a distinct set of opportunities: civil works, electrical substations, backup generation, cooling plants, and fibre connectivity. But the operational phase is where the long-term value lies—and it is also where the energy challenge becomes acute. An operational data centre typically requires only 20 to 50 permanent staff members on site, yet it can draw as much power as a small city. The construction boom is therefore a leading indicator of future electricity demand, not a temporary spike in economic activity.

Delivery Is the New Differentiator

CBRE’s research emphasizes that headline pipeline does not equal deliverable supply: power access, planning approvals, capital availability, and construction capability will determine actual delivery. With A$18.3 billion of work still to be built and committed capacity doubling to 5.2 GW, with 400 MW currently under construction, the construction sector’s ability to execute will shape how quickly Australia’s digital infrastructure can meet AI-driven demand. For infrastructure and energy players, the construction boom is a clear signal: the demand is real, the capital is committed, and the constraint is now execution—on the grid, in the planning system, and on the building site.