London is the only English region in which average house prices fell over the year to February 2026, according to the latest UK House Price Index from the Office for National Statistics, published on 22 April. While prices in Yorkshire and the Humber rose 3.9%, in Northern Ireland 7.5% and across England as a whole 0.8%, the capital recorded an annual decline of 3.3% — the sharpest fall of any region. The data confirms what estate agents and buyers across the city have been describing for months: a market that is simultaneously well-supplied and structurally constrained by the cost of borrowing.
The numbers behind the fall
The average London property price for the 12 months to March 2026 stood at £666,000, with the median at £505,000 — both still by some distance the highest of any UK region. But the year-on-year decline has wiped roughly £18,700 off the average price. Sales volumes have fallen even more sharply: 64,700 transactions over the past 12 months, down 20.3% on the previous period.
The picture varies dramatically by postcode. The most expensive sector remains W1K 1 in Mayfair, where the average price sits at £12.7 million. The most affordable London postcode, IG11 8 in Barking, averages £256,000. The largest year-on-year falls have been in inner west London, where Russian, Chinese and Middle Eastern buyer numbers have thinned, and in outer southeast boroughs where first-time buyers are most exposed to mortgage costs.
Mortgage costs are the mechanism
The proximate cause of the London correction is the sharp rise in mortgage rates following the outbreak of the Iran conflict in late February 2026. According to Rightmove’s daily mortgage tracker, the average two-year fixed rate has risen to 5.42% from 4.25% before the war — adding around £235 a month to a typical new mortgage. The five-year average sits at 5.70%.
That increase falls on London buyers more heavily than on those elsewhere. Zoopla’s analysis shows that four in five first-time buyers in London pay stamp duty equivalent to roughly 3% of the purchase price, against fewer than one in 10 outside the capital. Combined with much larger absolute loan sizes, this raises the threshold of household income required to transact and prolongs the time it takes to find a buyer. Harrow now records the longest average sale time in the capital at 54 days, up from 33 days a year earlier — a 65% increase.
Outer London is bearing the strain
The longer time to sell is not a Mayfair phenomenon. Buyers in central London tend to be wealthier, more equity-rich and less mortgage-dependent. The pain is concentrated in outer boroughs where first-time buyers and second-steppers dominate transactions: Bromley, Croydon, Sutton, Bexley, Hillingdon, Enfield and Barking & Dagenham. Properties in those boroughs are typically taking three to six weeks longer to find a buyer than 12 months ago.
Inner London is partially insulated by the rebound in the prime rental market. Average monthly private rent in Kensington and Chelsea hit £3,599 in March, the highest in the country. Strong rental yields have kept some buy-to-let investors active in the £750,000 to £2 million price band, particularly around regeneration zones such as Nine Elms, Bermondsey and White City.
What happens next
The Bank of England held interest rates at 3.75% on 30 April but signalled a more cautious stance on further cuts. Wholesale swap rates have stabilised over the past fortnight, and lenders including Nationwide, HSBC, Halifax and Santander have nudged fixed-rate products lower. Whether that momentum continues will depend on May’s inflation print and on the trajectory of the Middle East conflict.
For sellers, the practical implication is unambiguous: realistic pricing matters more than ever. According to the Conseil supérieur du notariat-style guidance now widely adopted by London agents, properties priced 5–10% above comparable evidence are the slowest to sell and most likely to be discounted. For buyers, the market offers more choice than at any point since 2019 — but the cost of carrying that choice is materially higher than 12 months ago.
— Edward Blackwell, London Capital Post
