UK Office Construction Output Falls, Pressures Vacancies and Rents

Office construction output in the UK has fallen by 20% in 2025, according to Barbour ABI, marking a significant shift in the country's commercial real estate landscape. This downturn has placed substantial pressure on vacancies and commercial rental prices, with further tightening expected in 2026.

What Happened
UK office construction output amounted to £10.2 billion in 2025, reflecting a stark decrease from previous years. The first five months of 2025 saw only 152 new construction contracts awarded, valued at £2.7 billion, compared to 185 contracts worth £3.9 billion during the same period in the previous year. The forecast for 2026 is equally concerning, with only 694,000 square feet of office space expected to be completed across the Big Nine regional cities, a substantial drop from the 2.2 million square feet per year average from 2020 to 2024.

London has been particularly affected, with prime rents in the City surpassing £100 per square foot for the first time, a 6.8% increase from the prior year. The West End saw a 6.1% rise in rents. Across major cities like Birmingham, Bristol, Edinburgh, Glasgow, Leeds, and Manchester, cumulative prime rental growth has averaged 37% since 2019.

Vacancy rates are also tightening, with Savills data indicating a City core Grade A vacancy of just 2.2%. The fourth quarter of 2025 saw Grade A availability in the City of London and West End falling below 0.5%. Across the Big Six, Grade A availability is just 3.6%, with new-build vacancy at 1.1%.

Ed Griffiths, head of client and business analytics at Barbour ABI, noted the impact of this imbalance: "The imbalance between strong demand and constrained Grade A supply is pushing prime rents upward across London and key regional markets."

What This Means for Your Business
For AECM professionals and government contractors, the current market dynamics present both challenges and opportunities. The constrained supply of Grade A space, particularly ESG-compliant properties, highlights a critical demand for innovative solutions in construction and design that meet stringent sustainability criteria. The rising rental costs could affect project budgets and operational expenses, necessitating strategic planning and cost management.

Compliance with emerging environmental standards will be increasingly crucial, as developers and contractors must address the demand for ESG-compliant spaces. This focus on sustainability can also open up new avenues for federal funding and investment opportunities in green building projects.

What US Operators Should Watch
As the UK office construction market continues to tighten, US operators should monitor potential shifts in procurement opportunities, particularly those related to sustainable building initiatives. Federal funding windows for green infrastructure projects may offer strategic advantages. Additionally, keeping an eye on planning constraints and financing costs will be essential for maintaining competitive positioning.

With construction starts expected to remain below trend levels through 2026, decision-makers should stay informed on regulatory timelines and potential policy changes that could impact project planning and execution.

Source: https://www.theconstructionindex.co.uk/news/view/office-construction-output-falls-in-2025