Construction starts across the United Kingdom fell sharply in the three months to the end of October 2026, according to the latest Glenigan Index published on 5 November. The value of underlying work beginning on site was 21% lower than in the corresponding period of 2025 and 9% below the preceding three-month comparison. The figures are a substantial warning about the development pipeline, not a count of planning permissions refused or delayed.
Residential construction starts were 29% lower than a year earlier, while non-residential projects were down 22%. Civil engineering offered a contrasting picture, with starts rising 19% year-on-year as utilities projects strengthened. Glenigan’s measurements concern underlying projects valued below £100 million, so the percentages should not be presented as a comprehensive measure of every major UK building or infrastructure project.
For developers, investors and planning consultants, construction starts are a useful test of whether consented and proposed schemes are actually reaching site. They do not by themselves explain why a project has been postponed. Nevertheless, sustained weakness in private and social housing work raises practical questions about financing, viability, regulation and the gap between planning decisions and delivery.
Why construction starts fell in October
The Glenigan Index of construction starts to the end of October 2026 compares the value of work starting on site during a rolling three-month period. Its headline decline is 9% against the previous three-month period and 21% against the same period in 2025. Those are two different comparisons, not evidence that project starts dropped 21% in October alone.
Glenigan publishes a regular index of underlying project starts, excluding schemes worth £100 million or more. This makes the series particularly useful for analysing the ordinary development market, including smaller builders and contractors, but it cannot measure the entire construction industry. A large power station, rail project or data centre may have a major effect on investment without appearing in this underlying series.
The figures describe the estimated value of projects that have begun construction, rather than the number of plots with consent, the number of homes completed or the volume of applications submitted. Construction starts can fall even while some planning authorities approve more homes. A permission may be implemented much later, phased over several years, or never built at all.
Housing starts remain under pressure
For residential work, construction starts weakened by 4% against the previous rolling period and 29% year-on-year. The decline was apparent in both tenures. Private housing slipped 1% on the shorter comparison but remained 28% below the corresponding 2025 period. Social housing starts were down 12% on the shorter comparison and 31% year-on-year.
The distinction matters when judging policy claims about housing supply. Approving an estate and delivering occupied homes are separated by land assembly, technical approvals, financing, infrastructure, procurement and the willingness of buyers or registered providers to commit. A sustained fall in starts is therefore a more immediate warning about the construction pipeline than a change in planning application totals alone.
Anyone trying to bring forward a site still needs to understand the statutory planning route and decision timescales. Planning Geek’s guide to planning application timescales explains the application stage. Glenigan’s figures measure a different, later point: the start of physical development. Neither dataset should be used as a direct substitute for the other.
Commercial development is weaker, but not uniformly
Across non-residential construction starts, the Glenigan Index recorded a decline of 21% against the preceding three months and 22% against a year earlier. Industrial projects fell 29% and 44% respectively. Hotel and leisure starts dropped 45% on the shorter comparison and 37% on the year, while health projects fell 38% and 34%.
Offices and retail showed more resilience. Office starts were down 8% on the shorter comparison but 20% higher than a year earlier. Retail slipped 3% against the preceding three months yet stood 17% above the 2025 level. The figures do not establish that every office or shopping development is viable, but they show why treating all commercial uses as one market gives a misleading picture.
For a landowner considering a change of use or a commercial development, the practical lesson is not to assume that the overall market direction automatically applies to the specific site. Local occupier demand, building specification, servicing, access, infrastructure and finance can outweigh the wider index. Projects with strong fundamentals can still move forward during a downturn.
Utilities support civil engineering activity
Unlike housing and most commercial sectors, civil engineering starts increased by 21% compared with the previous three-month period and were 19% higher year-on-year. Glenigan points to the commencement of energy-related work, including the £45 million Brecks Solar Farm, as contributing to this better performance.
Utility project starts grew 55% against the preceding three months and 70% compared with the previous year. Infrastructure starts outside that category, however, fell 5% on the shorter comparison and remained 14% below a year earlier. The contrast is important: strong activity associated with energy, power and data infrastructure does not mean all transport and civil engineering programmes are accelerating.
Glenigan’s economic director Allan Wilen observed that “a rise in civil engineering work should not go unnoticed”. His commentary attributed part of the improvement to utilities projects starting on site. That is the data provider’s assessment of its own index; it is not proof that construction finance or planning conditions have become easier across the board.
Large regional differences remain
Wales was the strongest region in the latest comparison, with construction starts rising 7% against the preceding three months and 58% against a year earlier. The North West rose 4% on the shorter measure and was level year-on-year. These figures demonstrate why the UK-wide contraction should not be applied automatically to every regional market.
Elsewhere the position was much weaker. The West Midlands fell 38% against the preceding three months and 39% year-on-year. The North East declined 15% on the shorter comparison and 58% from a year earlier. Northern Ireland fell 32% and 39% respectively, while Scotland was down 10% and 27%. London declined 9% on the shorter comparison and 8% on the year.
Regional figures may be affected by the timing of individual projects. A comparatively small number of starts can have a disproportionate effect on a rolling index, especially in the smaller markets. The data should be read alongside local investment decisions, building control activity and planning pipelines rather than treated as a standalone forecast.
What the latest data means for planning and delivery
The construction starts figures provide a useful counterweight to announcements about new allocations, planning approvals or development finance. They measure movement towards delivery rather than the potential to build. The national annual decline of 21%, together with a 29% fall in residential starts, is important enough to warrant scrutiny even though the primary index was published on 5 November rather than on the day of this report.
It would be a mistake to attribute all of the decline to the planning system. Glenigan discusses wider uncertainty and investor confidence, while housing delivery is also affected by affordability, labour, materials, interest rates, infrastructure and market absorption. The dataset does not isolate the contribution of each factor, or show whether planning reforms have succeeded or failed.
For practitioners advising clients, the immediate questions are whether a site has a credible route to commencement, whether pre-commencement conditions and technical approvals can be discharged, and whether the business case remains workable at current construction costs. A planning permission is necessary for many schemes, but it is not the same as a funded, buildable project. The next monthly index will help show whether the weakness in starts persists.
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