UK House Prices Rise 0.9% in March but Iran War Clouds Mortgage Outlook
UK house prices rose by 0.9% in March 2026 — the fastest monthly increase since December 2024 — bringing the average property price to £277,186, according to Nationwide's latest index. However, the building society warned that the ongoing US-Israel war on Iran has "clouded the outlook" for the housing market, with mortgage rates rising sharply in response to geopolitical uncertainty.
Annual house price growth accelerated to 2.2% in March, up from 1% in February, surpassing economists' expectations of 0.6% monthly growth. Northern Ireland led all UK regions with a 9.5% year-on-year increase in the first quarter of 2026, bringing the average price there to £225,269 — a figure that reflects both the relative affordability of the Northern Ireland market and the strength of demand in the region.
Background
The UK housing market entered 2026 with cautious optimism. Expectations of falling interest rates, improving affordability, and a gradual recovery in buyer confidence had supported activity through the latter part of 2025. The Bank of England had been expected to cut its base rate twice during the first half of 2026, providing further relief to mortgage holders and prospective buyers. Those expectations have now been dramatically revised in the wake of the US-Israel conflict in the Middle East, which has pushed global energy prices sharply higher and triggered a significant repricing of interest rate expectations in financial markets.
The Nationwide house price index, one of the most closely watched measures of UK property values, showed that prices rose strongly in March despite the emerging headwinds. The 0.9% monthly increase was the fastest since December 2024 and pushed annual growth to 2.2% — a figure that, while modest by historical standards, represents a meaningful acceleration from the 1% recorded in February.
Key Developments
The North West of England recorded the second-strongest regional performance, with prices rising 3.3% year-on-year to an average of £229,173, while Scotland saw a 3% increase to £191,747. At the other end of the spectrum, the outer south-east of England recorded the weakest performance, with a 0.7% year-on-year fall to an average of £336,036. East Anglia also saw a decline of 0.4%.
Despite the strong March figures, Nationwide's chief economist Robert Gardner cautioned that the Iran conflict has triggered a sharp rise in longer-term interest rates — the swap rates that underpin fixed-rate mortgage pricing. The average two-year fixed-rate mortgage climbed to 5.77% by late March, up from 4.83% at the start of the month, while five-year fixed rates rose to 5.7% from 4.95%. Financial markets are now pricing in the possibility of the Bank of England raising its base rate three times over the next 12 months — a significant reversal from earlier expectations of two rate cuts.
Separate data from Zoopla indicated that buyer demand in March was down 13% year-on-year, with rising mortgage rates and uncertainty stemming from the Middle East conflict cited as the primary factors. Mortgage expert Karen Noye of Quilter noted that "expectations of easing borrowing costs and improving affordability at the beginning of the year had been supporting activity, but this progress has been rapidly undone."
Why It Matters
The housing market data presents a mixed picture for UK homeowners and prospective buyers. While prices have risen strongly in the short term — particularly in Northern Ireland and the North West — the rapid increase in mortgage rates threatens to significantly reduce affordability and dampen activity in the months ahead. For first-time buyers, the combination of higher prices and higher borrowing costs represents a significant additional barrier to homeownership at a time when housing affordability is already a major political and social concern.
The speed of the mortgage rate increase is particularly striking. A rise of nearly a full percentage point in a single month is exceptional and reflects the degree to which financial markets have been rattled by the geopolitical situation. If rates remain elevated, the housing market recovery that appeared to be taking hold at the start of 2026 could stall or reverse.
Local Impact
Northern Ireland's position as the UK's strongest-performing housing market — with 9.5% annual growth and an average price of £225,269 — reflects the region's relative affordability compared to other parts of the UK and the strength of underlying demand. However, the sharp rise in mortgage rates will be felt acutely by buyers in Northern Ireland, where the proportion of first-time buyers is higher than the UK average and where many households are particularly sensitive to changes in borrowing costs. Estate agents across Belfast and beyond have reported a noticeable cooling in enquiries since the Iran conflict began to push rates higher, and there are concerns that the spring selling season — traditionally the busiest period for the housing market — may be significantly disrupted. For those already on variable-rate mortgages, the prospect of further rate rises is a source of real anxiety.
What's Next
The Bank of England's Monetary Policy Committee is due to meet in May, with markets closely watching for any signals on the future path of interest rates. The next Nationwide house price index will be published in late April. Full data is available via The Guardian and the Nationwide House Price Index.
