UK House Price Growth Halves to 0.8% as Mortgage Rates Climb

UK house prices rose 0.8% in the year to September to £274,251, according to Nationwide. That annual rate was half the 1.6% recorded in August. Prices fell 0.2% month-on-month on a seasonally adjusted basis, meaning after removing usual seasonal ups and downs. The Guardian

September was the slowest pace of annual growth since December last year. The September 0.8% figure was also the weakest rate since December 2025 on Nationwide's own comparison. The lender's seasonally adjusted Monthly Index stood at 548.3 in September, down from 549.6 in August. Nationwide

Nationwide chief economist Robert Gardner linked the loss of momentum to interest-rate expectations and outside price pressures. He said "mounting financial market expectations of Bank of England rate increases maintained upward pressure on market interest rates underpinning mortgage pricing." He also said "geopolitical tensions remain high, with Middle East conflict putting upward pressure on energy prices and fanning inflation concerns."

The Guardian attributed the subdued market to the US-Israel war with Iran and disruption to Gulf oil flows driving up energy costs and inflation fears. That effect passes through swaps, market contracts that help set fixed mortgage prices, into what borrowers pay. Both average two-year and five-year fixed mortgage rates were sitting above 5.9%. Citing Moneyfacts, the average two-year fixed rate rose to its highest level since July 2024, while the average five-year fixed rate hit its highest level since October 2023.

The quarterly breakdown shows a narrow, regionally uneven market. The UK Q3 2026 average price was £276,157 with 1.2% annual growth, down from 2.2% last quarter. England's annual growth slowed to 0.5% in Q3. Average prices in Northern England were up 1.6% year-on-year. Average prices in Southern England were down 0.1% year-on-year. Eight of thirteen UK regions saw annual growth below 1% in Q3, with four recording a small annual decline.

Within England, Nationwide listed the North West as the top performing region, with a Q3 average price of £231,360 and 3.9% annual growth, unchanged from last quarter. London averaged £529,720 with 0.4% annual growth, the only southern region to record an annual rise. East Anglia was the weakest performing UK region, averaging £272,119, with an annual decline of 0.7%. Scotland averaged £196,215 with 3.3% annual growth. Northern Ireland averaged £227,922, with annual growth slowing to 5.9% from 8.6% in Q2, still the strongest rate in the UK.

On affordability, Nationwide said underlying affordability is improving as house price growth has been well below earnings growth for some time. It also said private sector wage growth has remained modest. The not seasonally adjusted average price was £275,465 in August, after a 0.2% monthly rise that month. Nationwide notes its monthly percentage changes are revised when seasonal adjustment factors are re-estimated.

The broader context here is a forecast miss driven less by housing supply than by financial repricing. Nationwide had said it expected house price growth of between 2% and 4%. Instead, after a volatile spring and summer when prices fell 0.6% in May and were flat in June, growth has decelerated into autumn. Energy-led inflation risk has tightened financial conditions even without a policy move. For borrowers, that means higher refinance hurdles and longer decision lags. For sellers in the South and East Anglia, it means thinner bidding. For the North West, Scotland and Northern Ireland, momentum has persisted but is cooling.

Looking at what this means for the next quarters, the variables to watch are gilt yields, swap rates, energy pass-through, and realised earnings. Gilt yields and swaps are government and market borrowing costs that feed into mortgages. If market expectations for Bank rate stay elevated, mortgage spreads will keep transaction volumes soft and favour equity-rich buyers. If earnings continue to outpace house prices, deposit and serviceability constraints ease at the margin, even as monthly payments stay high. The regional split will matter for policy transmission. A national average near flat can coexist with modest growth in lower-priced regions and outright softness in higher-priced southern markets.