The Construction Products Association has slashed its UK construction outlook, forecasting a 2.5% fall in output for 2026 – what it calls a “sharp, unprecedented downward revision” from its winter outlook. Private housing is the worst hit, down 7%, with repair and maintenance work down 8%. Infrastructure is the only growing sector at 3.2%. The trigger is the Middle East conflict feeding double-digit product price inflation through to materials, energy and confidence. Worse-case modelling sees output collapse 4.7% in 2026 with the UK tipping into recession.
Construction economists have just delivered the bleakest UK forecast in years, and the numbers are not subtle. UK construction output is now expected to contract 2.5% across 2026, with private housing falling 7% and homeowner repair and improvement work down 8%. The Construction Products Association calls it a “sharp, unprecedented downward revision” from its winter view, with risks heavily skewed to the downside.
The trigger is geopolitical. Oil and industrial energy price spikes from the Gulf conflict are feeding directly into product manufacturing costs, with UK industrial energy accounting for up to a third of total costs for some manufacturers. That feeds straight through to bid prices, then to margins, then to pipelines. Clients are already delaying schemes.
For UK contractors, developers and the AEC tech vendors selling into them, this is not a theoretical macroeconomic story. It is a 12 to 18 month operational reality starting now.
UK construction is heading into a contraction. Private housing and homeowner improvement work bear most of the pain. Infrastructure holds up. Cost inflation is the throughline, and it is structural rather than transitory.
The unprecedented downgrade
Why the CPA used a word it rarely uses
The CPA does not throw the word “unprecedented” around lightly. Its winter 2026 forecast had output growing 1.7%. Six months later, the same team is forecasting a 2.5% contraction. That is a swing of more than four percentage points, and the central case still leaves risks weighted to the downside.
The mechanism is a cost shock with a long tail. The CPA’s working assumption is four months of Middle East disruption, with lagged impacts running 12 to 18 months. Even if conflict ended tomorrow, the inflation already baked into oil-based products, energy-intensive materials and global supply chains has already done the damage. Bids submitted in Q3 2026 will reflect Q1 2026 input pricing.
Layered on top: the government’s Building Safety Levy lands in October, the proposed 50% steel import tariff is due in July, and the Future Homes Standard arrives in March 2027. Each one is justifiable on its own. Together, they hit a supply chain already running on 2-3% margins.
Housing takes the hit
Why the two largest sectors are the worst placed
Private housing is the largest sector in UK construction, and it is forecast to fall 7% in 2026 and stay flat in 2027. The mechanism is the one housebuilders know intimately. Mortgage rates have ticked up since the conflict began. Buyer confidence is softening. Site viability, already a problem in lower-priced parts of the country, gets worse with every product price hike.
Private housing repair, maintenance and improvement is forecast to drop 8%. With around 28 million existing homes across Great Britain, this is normally a steady backbone of work. But homeowners are pulling back on discretionary spending and waiting to see where bills, taxes and rates settle.
- Mortgage rates have moved up. Higher rates kill marginal buyers and shrink the pool of viable starts.
- Site viability is collapsing in some regions. Lower-priced areas were already on the edge before product cost inflation arrived.
- Households are battening down. The wait-and-see approach is rational for individuals, brutal in aggregate for RM&I demand.
- Government cost burdens stack. Building Safety Levy, steel tariffs and Future Homes Standard all hit between now and early 2027.
The infrastructure exception
Long-term programmes are still moving
Infrastructure is the one bright spot, forecast to grow 3.2% in 2026 and 3.4% in 2027. Energy generation, water under AMP8, and capital programmes underwritten by long-term government commitments are the engines. These are projects too important and too far progressed to easily mothball.
That said, even infrastructure is showing cracks. Rail and road pipelines are under cost pressure. There is rising concern over new HS2 contracts as the project’s reset drags on. A gap is emerging in the roads pipeline ahead of RIS3.
The direct impact on construction will be double-digit construction product price inflation. Indirectly, increases in inflation across the economy will also hit confidence and spending or investment.Rebecca Larkin, CPA Head of Construction Research
Two scenarios, very different outcomes
How wide is the cone of possibility
The CPA has modelled two paths depending on how the Gulf situation evolves. The worse-case scenario sees the UK tip into recession with rate hikes, rising unemployment and falling house prices, driving a 4.7% collapse in construction output for 2026. Private housing would fall 10%, commercial work 6%.
The better-case scenario, with limited rate rises and possible government stimulus including a “Freedom to Buy” scheme, sees output hold flat in 2026 before recovering. The gap between these two paths is enormous – the difference between holding workforce and capacity steady, and a contraction deeper than anything the industry has been through in recent memory.
| Scenario | 2026 | 2027 | 2028 |
|---|---|---|---|
| Central case (CPA Spring forecast) | -2.5% | +1.2% | +2.8%* |
| Worse case (UK recession) | -4.7% | +1.1% | +2.8% |
| Better case (limited rate impact, stimulus) | 0.0% | +2.2% | +3.6% |
*2028 figure illustrative based on CPA scenario range. Source: Construction Products Association Spring Forecast 2026.
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Procurement timelines tighten, ROI cases get harder
For ConTech founders selling into UK contractors and developers, this forecast changes the conversation in three concrete ways. Sales cycles, already long, will get longer as buyers defer non-critical software spend. The “this saves us money” pitch wins. The “this is the future” pitch dies. Vendors with consumption-based pricing or tight payback windows will hold up better than those still pushing big-ticket annual licences.
For tech-buying contractors, the lesson from prior downturns is that consolidation tends to beat expansion. Firms that pulled ahead during the last contraction were the ones that simplified their stack rather than added to it, leaning harder on the few platforms they could actually integrate. Recent industry data backs this up – software licensing costs are up by as much as 10% across nearly half of AEC firms, while ROI is harder to prove than ever.
And for everyone, the labour question gets sharper. Contraction often masks the underlying skills shortage rather than solving it. The same dynamic showed up in recent US data showing construction hiring at its slowest rate on record – reduced openings reflect uncertainty, not solved problems. When activity rebounds, the firms that retained capability win the recovery.
Frequently asked questions
The Construction Products Association is forecasting UK construction output to fall 2.5% in 2026, before a partial recovery of 1.2% in 2027. Private housing is forecast to fall 7%, private housing repair and maintenance 8%, and commercial 3.7%. Infrastructure is the only major sector forecast to grow, up 3.2%. The CPA describes it as a “sharp, unprecedented downward revision” from its winter outlook. Source: Construction Enquirer.
Two channels. Directly, oil and industrial energy price spikes feed into product manufacturing costs – UK industrial energy can account for up to a third of total costs for some manufacturers, particularly in oil-based and energy-intensive products. Indirectly, broader inflation hits confidence and spending across homebuyers, homeowners, businesses and investors. The CPA’s central case assumes four months of disruption with lagged impacts over 12 to 18 months. Source: PBC Today.
In the CPA’s downside scenario, the UK tips into recession with interest rate hikes, rising unemployment and falling house prices. Construction output collapses 4.7% in 2026, with private housing down 10% and commercial work sliding 6%. Developers shelve schemes en masse. The better-case scenario – limited rate rises plus government stimulus such as a possible “Freedom to Buy” scheme – sees output hold flat in 2026 before recovering. Source: Construction Enquirer.
Infrastructure is underpinned by long-term, government-backed programmes that are harder to delay or cancel. Energy generation, water spending under AMP8, and major capital projects continue to drive activity. That said, the picture is not uniformly positive – rail and road pipelines are showing cost pressure, there is rising concern over new HS2 contracts after the project’s delayed reset, and a gap is emerging in the roads pipeline ahead of RIS3. Source: Construction News.
Sales cycles get longer as buyers defer non-critical software spend. ROI-led pitches with tight payback windows beat aspirational ones. Consumption-based pricing models hold up better than big-ticket annual licences. Vendors selling productivity gains, cost reduction and tighter coordination have an easier story to tell than those selling transformation. For investors, expect later-stage rounds to take longer to close and existing portfolio companies to lean harder on customer expansion than new logo acquisition through 2026.
Construction Enquirer – Recession fears deepen as building faces sharp decline
Construction News – Construction activity expected to fall 2.5% in 2026 amid Iran war impact
PBC Today – Middle East clouds CPA Spring Forecast 2026
Builders’ Merchants News – CPA warns of construction activity contraction in 2026
Roofing Today – CPA Forecasts Unprecedented Drop in Construction Activity
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