UK construction in 2026 is a sector easing off a downturn, not recovering from one. Output fell 1.8% year-on-year in May and the Construction Products Association expects the full year to close down 3.3% before a modest 1.2% rise in 2027, driven almost entirely by a 10% collapse in private housing starts. Infrastructure is the one segment growing through the downturn (up 3.2% in both 2026 and 2027), while material and labour cost inflation are accelerating even as demand stays weak. For main contractors and buyers of site services, the next 12 months call for tighter cost-escalation clauses, closer subcontractor due diligence, and realistic allowances for gateway and planning timelines rather than pre-2022 assumptions.

UK construction in 2026 is a sector easing off a downturn, not recovering from one. Output fell 1.8% year-on-year in May and the Construction Products Association expects the full year to close down 3.3% before a modest 1.2% rise in 2027, driven almost entirely by a 10% collapse in private housing starts. Infrastructure is the one segment growing through the downturn (up 3.2% in both 2026 and 2027), while material and labour cost inflation are accelerating even as demand stays weak. For main contractors and buyers of site services, the next 12 months call for tighter cost-escalation clauses, closer subcontractor due diligence, and realistic allowances for gateway and planning timelines rather than pre-2022 assumptions.

Written by: AOG Insights

Reviewed by: Pending, see suggested reviewer

Last reviewed: Pending

Output: stabilising, not growing

The headline numbers still point down. Office for National Statistics data for April to June 2026 shows total construction output up a marginal 0.3% quarter-on-quarter, but that followed a weaker first quarter, and June itself fell 0.1% on May, which had already fallen 0.8% on April. On an annual basis, output was down 1.8% in May 2026, with new work 5.8% lower than a year earlier and only repair and maintenance work holding up, up 3.8% [1].

The forward indicators tell a consistent story of a sector finding a floor rather than turning a corner. The S&P Global/CIPS UK Construction PMI rose to 44.7 in July 2026, up sharply from 38.4 in June and well ahead of the 40.0 median forecast in a Reuters poll of economists, but a reading below 50 still means contraction, just a slower one. Housebuilding activity fell at its slowest pace in nine months and business activity expectations were the most upbeat since February [3]. RICS' Q2 2026 Construction Monitor shows the same pattern: the headline workloads net balance improved to minus 4%, from minus 12% in Q1, but that marks a fifth consecutive negative quarter. Infrastructure workloads rose from plus 4% to plus 16%, the seventh straight quarter it has led the market, with 12-month expectations for the sector revised up to plus 34% [4].

The CPA's Summer Forecast, published 26 July 2026, frames the shape of the year clearly: private housing new-build output is forecast to fall 10% in 2026 and stay flat in 2027; private housing repair, maintenance and improvement falls 8%; infrastructure output rises 3.2% in both 2026 and 2027 [2]. The takeaway for anyone pricing a 2026-27 pipeline is that "construction" is not one market right now. Housing-linked work is contracting hard, infrastructure is the growth story, and commercial and industrial sit somewhere between the two depending on region and subsector.

Costs: inflation is back even though demand is weak

Cost pressure has not tracked with demand. BCIS' General Building Cost Index rose 1.4% between Q1 and Q2 2026 for 3.8% annual growth, and its five-year forecast, published 30 June 2026, points to a 13.1% cumulative rise in building costs to Q2 2031, alongside a forecast 2.7% contraction in new work output for 2026 itself [5]. Materials inflation has been reported as gathering pace through the year, with commentary from BCIS and RICS both attributing part of the acceleration to knock-on effects from the 2026 Middle East conflict on energy and energy-intensive material prices, including structural steel and aggregates categories running at 8%-plus year-on-year [5].

RICS' Q2 survey puts numbers on the near-term outlook that main contractors will recognise: respondents expect material costs to rise 6.7% and skilled labour costs 5.2% over the coming year, with unskilled labour up 3.9%. Two-thirds of respondents (67%) cited financial constraints as an obstacle to activity, and reported profit margins, while still negative, improved from around minus 27% to minus 10% quarter-on-quarter [4]. Read together, this is a market where tender prices are still not fully absorbing input cost rises, which is exactly the condition that produces contractor financial distress. Insolvency data backs that up: construction remained the highest-insolvency sector in the UK in the 12 months to 31 May 2026, with 3,803 firms failing, 17% of the all-industry total, even as the monthly rate eased [11].

Labour and skills: a structural gap, not a cyclical one

CITB's Industry Picture 2026 and its companion Construction Workforce Outlook 2026-2030 put the workforce shortfall at an average of 41,200 additional workers needed every year to 2030, around 206,000 over the five-year period, equivalent to roughly 1.6% of the 2025 workforce added annually just to keep pace with demand [6]. CITB is explicit that this is structural: fewer people entering the industry, demand growing faster than supply, experienced workers leaving early, and productivity gains not closing the gap. Contributing factors cited include an ageing workforce (around 40% of construction workers are over 45) and the loss of more than 200,000 EU workers since Brexit. Electricians, carpenters, bricklayers, scaffolders and roofers are named as the hardest-hit trades, while 93% of employers report difficulty recruiting qualified quantity surveyors and commercial managers [6].

For buyers of site services this matters beyond the trades themselves. A tighter skilled-labour market pushes up the cost and lead time of everything programme-adjacent, welfare provision, traffic management, site security and logistics, because those roles compete for the same shrinking pool of site-based labour and increasingly need to be planned further ahead rather than mobilised at short notice.

Policy: four drivers reshaping where the pipeline points

Four policy threads matter most for anyone planning 2026-27 capital works. First, the Building Safety Act's Gateway 2 process for higher-risk buildings has improved but is still a genuine programme risk: average approval time fell from around nine months (October 2023 to March 2025) to roughly 13 weeks for new schemes by February 2026, helped by the Building Safety Regulator's Innovation Unit, though remediation-related applications remain slower. A March 2026 government consultation is looking at reclassifying some in-flat works from category A to category B to ease the bottleneck further [7].

Second, the Planning and Infrastructure Act 2025 received Royal Assent on 18 December 2025 and is intended to speed up planning decisions, particularly for housing and major infrastructure, including limiting legal challenges to significant projects to one attempt rather than three. Most of its practical effect depends on secondary regulations, which are under consultation through 2026, so main contractors should treat faster planning as a 2027-and-beyond benefit rather than something to bank on this year [8].

Third, the National Infrastructure and Service Transformation Authority's pipeline, updated in March 2026, now covers £718 billion across 734 projects over a 10-year horizon, up from £530 billion in the prior edition, and for the first time includes workforce and skills demand estimates alongside project data [9]. That scale is consistent with what RICS and CPA are both showing: infrastructure is where committed capital is concentrated while housing and private commercial remain hesitant.

Fourth, the Warm Homes Plan, published 21 January 2026, commits £15 billion of public investment to upgrade up to 5 million homes by 2030, including a £5 billion Warm Homes Fund, alongside the Future Homes Standard specification and regulations due in the first quarter of 2026 for new-build low-carbon heating and energy efficiency requirements [10]. Retrofit and decarbonisation work is a genuine demand source through the downturn, but it is largely public-funded and phased, so it will show up as a steady stream of smaller, dispersed projects rather than a single large pipeline.

What this means for the next 12 months

For main contractors, the practical implications are straightforward even if the market is not. Build cost-escalation mechanisms into 2026-27 tenders rather than fixed-price assumptions, given a forecast 13.1% five-year rise in building costs and RICS' 6.7% one-year materials expectation. Vet subcontractors and supply chain partners more actively given construction's position as the highest-insolvency sector by volume. Plan Gateway 2 and planning timelines with contingency, even though both have improved, because "improved" still means 13 weeks minimum for Gateway 2 and largely unrealised benefit from planning reform until secondary legislation lands. And treat skilled labour, not headline demand, as the binding constraint on programme certainty, which extends to the site-service functions that support the workforce, welfare, security, logistics and traffic management, all of which need to be procured earlier and planned around the same tightening labour market as the trades themselves.

For buyers evaluating tenders, the same data supports asking pointed questions of bidders: what escalation protection is built into the price, what is the contractor's financial standing given sector-wide distress levels, and what assumptions has the bid made about gateway or planning timescales. AOG's five divisions, security, FM and cleaning, construction support, vacant property and fire protection, give us site-level visibility across a working construction programme, and the pattern we see in that operational data lines up with what the national statistics show: a market where the risks have shifted from "will there be work" to "will the numbers on this specific project hold."