UK construction sector outlook Q2 2026: The key challenges facing developers

Many development schemes that looked commercially attractive a few years ago are now under pressure. Demand for housing remains strong and house prices have stayed relatively resilient, but rising finance costs, elevated construction expenses, planning delays, and policy uncertainty are making it harder for developers to achieve acceptable returns.

The issue isn’t a lack of opportunity – it’s whether projects still deliver returns that justify the capital, risk, and time involved. For developers, investors, and landowners, revisiting viability assumptions has become essential, as appraisals that were robust in previous market conditions may no longer reflect today’s cost environment.

The construction sector entered 2026 with cautious optimism that easing inflation and peaking interest rates would support recovery, but the second quarter has proved more challenging. The latest ICAEW Business Confidence Monitor reported UK business confidence at -14.6, the lowest level since late 2022, with Construction among the least confident sectors – a sign that many challenges facing developers are becoming structural rather than cyclical.

One of the biggest surprises of the past 18 months has been the resilience of UK house prices. Despite mortgage rates remaining significantly higher than the low-interest environment of 2015 to 2021, the market has avoided the sharp correction many economists anticipated, with annual house price growth reaching around 2.2% in June.

However, strong sales values don’t automatically translate into stronger development returns. An appraisal depends on land costs, construction costs, finance, delivery timescales, taxation, and exit values combined, so even where sales prices hold up, increases elsewhere can significantly reduce margins. The challenge isn’t generating demand – it is ensuring projects remain commercially viable.

Construction costs remain above historic norms, skilled labour shortages continue to affect delivery programmes, and development finance is considerably more expensive than in the previous decade. Many developers are now reviewing appraisals throughout a project’s lifecycle rather than only at acquisition — spotting pressure points early provides greater flexibility before they become embedded later in the development cycle.

Within most appraisals, only a limited number of factors can move – selling prices follow affordability and demand, costs reflect wider economic conditions, and borrowing follows the lending environment. As a result, residual land value – what’s left for the land once build costs, finance, and developer profit are accounted for – often becomes the main variable when schemes are reassessed. Where land values haven’t adapted to current conditions, developments that look attractive on paper may struggle to meet investor expectations, creating tension between developers, who need appropriate returns, and landowners, who want to protect asset values – resulting in longer negotiations and slower delivery of new homes.

The Government’s ambition to deliver 1.5 million new homes during this Parliament remains one of the most significant objectives affecting the sector.

However, almost two years into that commitment, delivery remains significantly below the pace required.

Analysis suggests approximately 392,400 net additional homes have been delivered since Parliament opened in July 2024. To achieve the overall ambition, annual delivery would now need to increase to approximately 361,000 homes per year throughout the remaining parliamentary term.

For comparison, England delivered approximately 199,300 net additional homes during 2024/25, leaving a substantial gap between current delivery levels and the future requirement.

Whilst housing starts have shown some improvement during the past year; completions remain at levels that make the target increasingly difficult to achieve.

The reality is that the UK does not have a demand problem; it has a viability problem.

Until developers can generate acceptable returns from new schemes, increasing housing supply at the pace required will remain exceptionally difficult, regardless of political ambition.

The appointment of Andy Burnham as Prime Minister adds a further consideration for developers, investors, and landowners already navigating a challenging market. His administration’s commitment to addressing the housing crisis is likely to be welcomed, but growing discussion around land wealth taxation and enhanced land value capture mechanisms raises questions about future development viability. The principle isn’t new – governments of different political backgrounds have looked at ways to secure a greater share of the value created by planning permissions and infrastructure investment. Designed effectively, such measures can fund infrastructure and support affected communities, but the challenge is ensuring additional costs don’t reduce the supply of viable projects.

Developers have limited ability to influence many of the largest costs in an appraisal – labour, materials, sales values, and finance are all largely outside their control – so additional taxation or obligations often place further pressure on residual land values. In theory, this should encourage land values to adjust; in practice, landowners may simply hold assets for longer, making sites harder to bring forward.

Policymakers face a delicate balance: additional value capture may increase public revenues, but it mustn’t come at the expense of the private investment needed to deliver new homes. For developers, the concern isn’t contributing to communities and infrastructure – it’s ensuring the cumulative impact of taxation, planning obligations, and regulatory change doesn’t reduce development activity altogether.

Current market conditions make regular review of development assumptions essential. Developers, investors, and landowners should consider:

• Are development appraisals still generating an acceptable return?
• Have higher finance costs altered investment hurdle rates?
• Does the existing land bank remain commercially viable?
• How exposed are projects to future changes in taxation, planning policy, or regulation?

Regular reviews allow businesses to identify challenges early, adapt their approach, and make better-informed decisions.