The average house price in the United Kingdom reached £271,000 in May 2026, reflecting a 2.7 per cent increase compared with the same month a year earlier, according to the latest UK House Price Index. This marks a slowdown from the revised 3.9 per cent annual growth recorded in April 2026.
The £271,000 figure represents a £7,000 rise over 12 months. However, on a month-to-month basis, prices showed minimal movement. Non-seasonally adjusted data indicate a 0.3 per cent increase between April and May 2026, significantly lower than the 1.5 per cent rise seen during the same period a year ago. When adjusted for seasonality, average prices remained unchanged at zero per cent month on month.
Stamp Duty Changes Weigh on Annual Comparison
The deceleration in the annual rate is largely attributed to the aftermath of Stamp Duty Land Tax (SDLT) adjustments implemented in England and Northern Ireland on 1 April 2025. Similar effects were observed following previous SDLT changes, with the rush to complete purchases before the deadline artificially inflating the earlier annual figures.
The annual growth rate slowed in May because the month-on-month increase of 0.3 per cent was much smaller than the 1.5 per cent rise recorded between April and May 2025. This base effect has moderated the headline annual figure.
Experts Point to Supply Constraints
Commenting on the data, Jamie Alexander, mortgage director at Romsey-based Alexander Southwell Mortgages, told Newspage: “The 2.7 per cent annual figure sounds respectable until you look at what is happening month-to-month. Prices barely moved between April and May, and a chunk of that annual number was the stamp duty rush from last year flattering the comparison. The underlying market is much closer to flat. The honest reason is supply. We have had decades of not building enough homes in the places people want to live and no savings scheme or stamp duty tweak fixes that. Demand is not the problem. People still want to buy. What stops them is finding something affordable to buy. That said, I am cautiously optimistic about the second half of the year. There is a lot of pent-up demand waiting for a reason to act.”
Affordability Remains a Key Challenge
The slight monthly growth and subdued market activity underscore persistent affordability pressures. Despite stable demand, the lack of suitable and affordable housing stock continues to hinder transactions. Industry observers note that while government interventions like SDLT adjustments may create short-term surges, they do not address the long-term structural issue of housing undersupply.
The UK House Price Index, compiled by HM Land Registry, Office for National Statistics and other bodies, provides the official measure of house price changes across the country. The data for May 2026 highlights a market that is essentially treading water after the stamp duty-driven spike in 2025.
Outlook for Second Half of 2026
Looking ahead, market participants are watching for any signs of revival. Alexander’s cautious optimism reflects a broader sentiment that pent-up demand could translate into increased activity if economic conditions stabilise and mortgage rates become more favourable. However, until the supply-side constraints are addressed, significant price growth appears unlikely.
The average house price in the UK has now risen by approximately 2.6 per cent from the previous year in real terms, but the lack of monthly momentum suggests the market is entering a period of stability rather than sustained growth. The coming months will reveal whether the stamp duty hangover fades or if deeper issues continue to weigh on the housing market.
