Halifax's March mortgage data shows the average UK house price slipping to £299,677, a 0.5% drop from February. The decline coincides with heightened uncertainty from the Israel‑Iran conflict and a climb in mortgage rates, which together are cooling buyer enthusiasm. February had recorded a modest 0.3% rise, suggesting the market’s momentum stalled.

Regional gaps widened, with the South East posting the steepest annual fall at 1.9%, while London slipped 1.2%. Northern Ireland bucked the trend, posting an 8.7% year‑on‑year gain, highlighting divergent local dynamics. Halifax’s broader transaction sample, especially in the north, often yields figures that differ from Nationwide’s, which this month showed a 0.9% monthly rise.

Mortgage costs surged, with the two‑year fixed rate climbing to 5.9% by early March, up from 4.83% at the month’s start, according to Moneyfacts. Capital Economics’ Ashley Webb warned that households locked into fixed‑rate deals will feel the impact gradually, keeping price growth muted as borrowing costs remain elevated.

The mixed data underline how geopolitical risk and monetary tightening are reshaping UK demand. While Halifax’s dip suggests immediate pressure, divergent regional performance and the lagged effect of higher rates mean the market may stay flat rather than plunge further. Investors should watch mortgage‑rate movements for clues on near‑term price stability.