The risk
One in four homes by mid-century
The Environment Agency's national flood risk assessment (NaFRA2) found around 6.3 million properties in England in areas at risk from rivers, the sea, surface water or a combination. Surface water, from rain that can't drain away fast enough, affects far more homes than rivers and the sea.
With climate change, the agency expects that to reach around 8 million by the middle of the century: one in four properties in England (Environment Agency).
Flood claims are already rising. Domestic flood payouts rose 38% to £312 million in 2025, and the average flood claim reached £30,000 (ABI). Look up your address with the government's long-term flood risk checker.