Data centre construction cost is measured differently from almost any other building type. An office is priced per square metre. A data centre is priced per megawatt of IT load, because the building is really a shell around a power and cooling plant. Two halls of the same floor area can finish hundreds of millions of dollars apart depending on how much power they are designed to deliver, how much redundancy sits behind it and how dense the racks inside will be. This guide explains what a data centre build covers, where the money goes, and the factors that decide whether the budget holds.
What a data centre build covers, and why it is priced per megawatt
A data centre has two parts. The first is the building: structure, envelope, data halls, loading docks, offices, security and the site works around them. The second is the critical infrastructure that keeps the servers running: high-voltage supply, substations, transformers, switchgear, uninterruptible power supplies (UPS), backup generators, fuel storage, chillers, cooling distribution and the controls that tie it all together.
The second part is where most of the money goes. That is why the industry quotes cost per megawatt (MW) of critical IT load rather than per square metre. A hall designed for 10 MW needs roughly twice the electrical and mechanical plant of one designed for 5 MW, even if the floor area barely changes. Floor area is a poor predictor of cost. Power is a good one.
The type of facility matters too. A hyperscale campus built for a single cloud or AI operator is designed around very large, repeatable halls and is usually procured in stages. A colocation facility leases space and power to many tenants, so it carries more flexibility, more security zones and often a higher fit-out standard. An edge data centre is small, close to users and often modular, so its cost per MW can be higher simply because it lacks the economies of scale. Before any number is quoted, it needs to be clear which of these is being priced, and whether the figure covers the shell only, the fit-out only, or both.
What a data centre costs to build in Australia
Published benchmarks give a useful starting range. Cushman & Wakefield’s Asia Pacific Data Centre Construction Cost Guide 2026 puts a mid-specification build in Australia at between AU$11.0million and AU$16.8 million per MW of IT load*. On that basis a 10 MW facility sits somewhere between AU$110million and AU$168 million* before land, IT equipment and the tenant’s own fit-out.
| Benchmark | Figure* | Source |
| Mid-specification build cost, Australia (2026) | AU$11.0m–AU$16.8m per MW (US$7.9m–US$12.1m) | Cushman & Wakefield, APAC Data Centre Construction Cost Guide 2026 |
| Year-on-year cost change, Australia | +3.8% | Cushman & Wakefield, 2026 |
| Australia’s ranking in Asia Pacific by cost per MW (H2 2024) | Third most expensive | Cushman & Wakefield via Property Council of Australia |
| AI-ready facility premium over a traditional build of similar capacity | About 7% – 10% (US projects) | Turner & Townsend, Data Centre Construction Cost Index 2025–2026 |
| Average cost inflation for traditional data centres across 52 global markets (2025) | +5.5% | Turner & Townsend, 2025–2026 |
*Figures are drawn from the published reports listed, are indicative only and vary with location, specification, redundancy, density and market conditions. Conversions to Australian dollars are as stated by the source at the time of publication. They should not be relied on for budgeting a specific project. An independent estimate prepared from your drawings, power design and site conditions is the only reliable basis for a data centre budget.
The width of that range is the point. A AU$5.8 million gap per MW* is the difference between a straightforward air-cooled hall on a serviced site and a dense, highly redundant facility with a long grid connection to fund. The rest of this guide explains where that difference comes from.
The factors that drive data centre construction cost
Power capacity and the grid connection
Power is the first constraint and often the largest single risk. A data centre of any scale needs a high-voltage connection, an on-site substation and transformers, and the network operator decides how much capacity is available and when. Developers commonly fund the network upgrades needed to serve the site, and those contributions can be substantial. Turner & Townsend’s 2025–2026 survey found power availability was the most commonly cited obstacle to delivering data centre projects on time*, and Cushman & Wakefield has flagged that infrastructure upgrades limit development options in Sydney before 2029*. A site with confirmed capacity is worth paying for. A site waiting on a connection carries holding costs that rarely appear in the construction estimate.
Redundancy level
Redundancy is how much backup plant sits behind the critical load. A design with one spare unit for every group of duty units (N+1) costs far less than one that duplicates every path (2N). The Uptime Institute’s Tier I to Tier IV classification is a common shorthand for this. Each step up adds generators, UPS modules, switchboards, cabling paths and cooling plant that sit idle most of the time but must be built, tested and maintained. The redundancy level should be fixed early, because it changes the size of almost every electrical and mechanical package.
Rack density and cooling
Traditional enterprise and cloud halls are designed around modest rack densities and cooled by air, using chillers, computer room air handlers and hot or cold aisle containment. AI and high-performance computing racks draw several times that load, and air alone cannot remove the heat. They need direct-to-chip liquid cooling or immersion systems, with secondary pipework, coolant distribution units and heavier floors. Turner & Townsend estimates AI-ready facilities cost around 7% to 10% more than traditional builds of similar capacity in the US*. Many operators now ask for halls that can switch between air and liquid cooling over their life, and that flexibility has its own cost.
The site and the building shell
The shell is a smaller share of the budget than the plant, but it is not cheap. Data halls need long clear spans, high floor loads, generous ceiling heights for cabling and containment, and robust security. Site works can include earthworks, flood and bushfire mitigation, water supply for cooling, fuel storage for generators, perimeter security and road upgrades. Greenfield land on the fringe of Western Sydney or Melbourne behaves very differently from a brownfield site in an established industrial area, where demolition, contamination and constrained access come into play.
Long-lead equipment and procurement
Transformers, switchgear, generators, UPS systems and chillers all have long manufacturing lead times, and most are imported. Turner & Townsend’s 2024 index reported that 80% of surveyed professionals had experienced delays in manufacturing or delivering essential equipment*. Early procurement locks in price and program, but it means committing money before the design is finished. Exchange rate movements also flow straight through to the cost of imported plant, which is why estimates for these packages need to state the currency assumption clearly.
Labour and market capacity
Data centres compete for the same electricians, mechanical contractors and commissioning specialists as renewable energy, transport and defence projects. Westpac estimated roughly AU$15 billion of data centre-related construction was underway in Australia at the end of 2025, with the pipeline far larger*. Where several large campuses are being built in the same corridor at once, trade rates and availability move quickly, and a program that assumed steady labour supply can slip.
Program and staging
Most large data centres are built in stages, with the base infrastructure for the full campus installed first and halls fitted out as tenants commit. Staging spreads the capital cost but adds remobilisation, temporary works and the risk of building next to a live facility. A compressed program to meet a tenant’s go-live date adds overtime, double shifts and premium freight. Commissioning is a phase of its own: integrated systems testing of the electrical and mechanical plant takes weeks and needs to be priced, not assumed.
Why data centre budgets blow out
When a data centre finishes well over budget, the cause is rarely the price of concrete or steel. It is usually one of five things.
- The power design changed after the budget was set, most often because the target rack density went up and the cooling strategy followed.
- The redundancy level was assumed rather than confirmed with the end user, so a Tier III budget met a Tier IV brief.
- The grid connection cost, the network operator’s contribution or the timing of energisation was left out of the construction estimate.
- Long-lead plant was priced at last year’s rates and an exchange rate that no longer holds.
- The budget only covered the shell and core, and the fit-out, commissioning, professional fees and contingency were never added to it.
Each of these is a scope problem before it is a pricing problem. They are caught by reading the brief, the power design and the site conditions together, and by being explicit about what the estimate includes and excludes.
The value of an independent cost estimate
A data centre is a large commitment made early, often before a tenant is signed and before the design is complete. Developers, investors and lenders need a cost figure they can test long before a head contractor is appointed. An independent estimate gives them one: the works measured from the drawings and the power design, priced against current rates, with the redundancy, cooling and staging assumptions written down so they can be challenged.
The same estimate does more work later. It underpins the feasibility study that decides whether the project proceeds, supports the bank finance report a lender needs before releasing funds, and becomes the benchmark for comparing contractors’ tenders on a like-for-like basis. Accent Estimating’s commercial new build and development costing service covers industrial and technical facilities, with the electrical and mechanical packages broken into their components rather than carried as lump sums.
Get an independent data centre cost estimate from Accent Estimating before you commit to land, plant or a construction contract.
Frequently asked questions
How much does it cost to build a data centre in Australia?
Published benchmarks put a mid-specification data centre in Australia at roughly AU$11million to AU$17 million per MW of IT load in 2026*. A 10 MW facility would therefore cost in the order of AU$110million to AU$170 million*, excluding land and IT equipment. The actual figure depends on the redundancy level, cooling method, site and grid connection.
Why are data centres priced per megawatt rather than per square metre?
Most of the cost sits in the electrical and mechanical plant that delivers and backs up power and removes heat. That plant scales with the IT load, not the floor area. Two halls of the same size designed for different loads can differ in cost many times over.
Do AI data centres cost more to build?
Yes. AI racks draw far more power than traditional racks and generally need liquid cooling, heavier floors and larger electrical infrastructure. Turner & Townsend estimates AI-ready facilities cost around 7% to 10% more than traditional builds of similar capacity, based on US projects*.
What costs are usually left out of a data centre budget?
Grid connection and network upgrade contributions, land holding costs while waiting for power, tenant fit-out, commissioning and integrated systems testing, professional fees, authority charges and contingency. Currency movements on imported plant are also often missed. A complete budget needs all of these stated, included or excluded.
When should a data centre cost estimate be prepared?
At feasibility, before land is bought or a power connection is committed to, and again as the design develops. An early estimate tests whether the project stacks up. Later estimates track the effect of design changes and provide a benchmark for tender assessment.
*All figures are indicative only, drawn from the published sources referenced above, and should not be relied on for budgeting a specific project.