Rapid growth in data centre construction is adding another layer of pressure to the residential building industry, with the Housing Industry Association warning that major technology projects are competing with housing for a limited supply of electricians and other specialist trades.
The expansion of large-scale data centres across the country requires substantial construction work and significant numbers of skilled workers. According to the HIA, the attractive pay available on these projects is drawing some tradespeople away from residential construction, making it more difficult for home builders to secure the workers they need.
Electricians are a particular concern, although the competition extends to other specialist trades. With housing, infrastructure, energy projects and data centres all requiring skilled labour at the same time, the construction sector faces the challenge of delivering multiple categories of major development from essentially the same workforce.
HIA Chief Executive for Industry and Policy Simon Croft says builders are increasingly reporting difficulties competing for electricians and specialist trades as demand strengthens throughout the economy.
The problem is not necessarily a lack of construction activity. Instead, it is that numerous industries are attempting to expand simultaneously, creating intense competition for workers with the qualifications and experience required to complete specialised projects.
Data centres can be particularly attractive to tradespeople because large commercial developments may be able to offer substantially higher rates of pay than residential builders. Croft says when a major project pays significantly more for electricians, the consequences are felt throughout the rest of the economy, including in home construction.
For residential builders, labour shortages can affect project scheduling, construction costs and the number of homes that can be delivered within a given period. A home may require numerous trades to complete different stages of construction, meaning delays involving one specialised workforce can flow through to other parts of the building schedule.
The warning comes at a time when increasing housing supply remains a major national priority. Delivering additional dwellings requires more than land approvals and development pipelines. Homes must ultimately be constructed, and that requires an available workforce across a wide range of trades.
When workers are redirected toward large infrastructure, energy or technology projects, residential builders can face longer waiting periods or may need to offer higher rates to secure labour. Those additional costs can ultimately place further pressure on the economics of delivering new housing.
The data centre boom therefore illustrates how housing supply can be affected by developments occurring outside the residential property sector.
Demand for digital infrastructure is increasing as businesses and consumers rely more heavily on cloud computing, artificial intelligence and data-intensive technology. Building the physical infrastructure required to support those services creates economic activity and employment, but it also increases demand for construction resources.
Croft says housing, energy, infrastructure and data centres are now competing for the same critical trades. Without an increase in the supply of skilled workers, he warns that something will eventually have to give.
Increasing the workforce is therefore central to the HIA’s concerns. Training new tradespeople takes time, particularly in occupations where apprenticeships and practical experience are required. In the short term, the construction industry must manage a workforce that cannot necessarily expand at the same pace as demand for major projects.
The challenge can also vary by location. A concentration of major developments in one region can create particularly strong demand for workers, making it harder for smaller residential builders operating nearby to compete for labour.
Large projects may have the financial capacity to attract workers from a broader area, whereas smaller housing businesses generally have less flexibility to absorb substantial increases in labour costs.
For home buyers, these pressures may not always be immediately visible. Labour availability sits behind many of the factors that influence the delivery of new housing, including construction timelines, building costs and project feasibility.
If homes take longer or become more expensive to construct, the consequences can flow through to housing supply and affordability. That is particularly important when policymakers are attempting to increase the number of new dwellings entering the market.
The issue also demonstrates why construction capacity needs to be considered alongside housing targets. Setting ambitious goals for new dwelling delivery does not automatically create the electricians, plumbers, carpenters and other skilled workers required to build those homes.
A sustained pipeline of infrastructure and technology investment can provide valuable opportunities for the construction workforce, but it increases the need for training and workforce planning across the broader economy.
For the residential sector, the objective is not to stop data centre or infrastructure development. Instead, the HIA’s warning points to the need to ensure that the pool of skilled labour expands sufficiently to accommodate competing priorities.
With housing construction, energy investment, infrastructure development and data centres all requiring critical trades, workforce shortages have become a significant constraint on construction capacity.
Unless skilled worker numbers increase in line with demand, competition for labour is likely to remain intense. That could make it harder and more expensive to deliver the new homes needed to address housing shortages, even when land, finance and development approvals are available.
