AI Eats the Build: Data Centres Muscle Out Housing as UK Construction Hits Two Speeds

There is an old joke in the industry that every decade produces a once-in-a-generation infrastructure boom. What Turner & Townsend's 17th annual Global Construction Market Intelligence report, published on 8 July, makes clear is that this time the boom has a very specific address: the data centre.

The growth of AI infrastructure, including demand for data centres, is squeezing global construction market capacity, according to the report, which gathered data from 112 markets across 44 countries. The implication for UK contractors is less abstract than it sounds. Data centres are now the second most in-demand construction sector in the UK. Residential and commercial office development tells a different story. The huge growth of AI infrastructure has concentrated demand in that sector, while residential and commercial office development remained subdued, ranking only ninth and seventh in the report.

That gap is not a statistical quirk. It is a capital allocation story. The growth in demand for data centres is creating a "two-speed construction market, where geopolitical tensions and economic challenges, mixed with workforce and supply chain constraints, are limiting investor confidence in traditional sectors such as residential and commercial development."

Where the Squeeze Lands

The skills pressure is particularly acute in the trades needed to deliver complex, technology-heavy projects. Turner & Townsend found that 87% of markets reported shortages in MEP trades, essential for data centres and other critical infrastructure projects. Mechanical, electrical and plumbing specialists are not an interchangeable commodity. You cannot retrain a bricklayer as a high-voltage systems engineer before the next framework tender closes.

More than 70% of the markets analysed reported tightening or overstretched contractor capacity in the data centre sector. That compares with a much looser picture across hospitality and leisure, residential and commercial development, where more than 79% of markets were either balanced or seeing spare capacity. For a UK groundworks firm watching its qualified electricians get poached by a hyperscale campus outside Slough, that figure is not reassuring.

Cost inflation adds its own pressure. Construction inflation in the UK is expected to rise to 3.7% in 2026 and 4.2% in 2027. The gap in construction costs between London and the regions is no longer widening, with Birmingham and Glasgow showing improvement; London costs are expected to increase by 3.5% in both 2026 and 2027.

The Compliance Burden That Will Not Ease

The industry is pulling in two directions at once: a data centre boom absorbing specialist trades, and a still-fragile residential pipeline struggling under the weight of Building Safety Act obligations. That regulatory pressure is generating its own product market.

BuildwellAI, a compliance intelligence platform for the UK construction industry, officially launched this month. Built for contractors, inspectors and asset owners, the platform captures, connects and validates information across documentation, inspection and verification, giving project teams a single, defensible record of what was built, how it was verified, and why it complies.

CEO Ben Smallwood argues that construction compliance is difficult to manage because regulations are constantly changing, making consistency hard for both building companies and regulatory bodies. His case for the platform is practical: the systems most firms rely on to evidence compliance have not caught up with what the law now demands.

The platform's design is deliberately cautious. The AI is positioned as a safety net for competent professionals, not a replacement for their judgement. Smallwood does not lead with the AI asking a person to sign off whatever it produces, arguing that approach generates automation fatigue where people defer to the screen instead of thinking for themselves. The professional stays the decision-maker.

That matters in a post-Grenfell environment where liability follows a building for its full lifespan. Under the Building Safety Act, that liability now follows the building for the life of the structure.

Brand Activity Cools in the Materials Tier

One quieter signal worth tracking: trademark activity in the non-metallic building materials space, where new brands register under Nice Class 19, covering timber, concrete, glass and associated construction goods. According to AIBD analysis of UK Intellectual Property Office (IPO) trademark data, Class 19 filings stood at just 154 in Q3 2026, a fall of 67.2% compared to the prior period. That kind of drop in brand registration activity in the materials tier typically reflects either consolidation among suppliers or a pause in new market entrants; neither reading is particularly bullish for the supply chain feeding the residential sector that Turner & Townsend flags as running at spare capacity.

The juxtaposition is clarifying. On one side of the two-speed market, data centre pipelines are drawing in MEP resource and squeezing capacity. On the other, the residential and materials supply chain is showing signs of retrenchment: fewer new brands, subdued demand rankings, and a building safety compliance burden that is expensive to meet without dedicated tooling.

Clients that invest early in digital capability and AI will be better positioned to handle complexity, improve productivity and secure long-term advantage, Turner & Townsend concludes. It reads well in a board deck. On site, where MEP subcontractors are already stretched and compliance paperwork still runs on spreadsheets, the distance between that aspiration and current practice is the real story.