Free Flood Risk Check by Postcode
HouseCheckup checks flood risk for any of 29M+ UK properties using official Environment Agency data. Enter a postcode or address to see river, surface water, and coastal flood zones — plus sewage overflow data and climate projections to 2080. Full flood analysis is included in our £14.99 Complete report, compared to £40–70 for a Groundsure Homebuyers environmental search.
Try or search any UK postcode
Free instant results from official UK government data. No sign-up required.
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This free tool checks one data point. The HouseCheckup Complete report combines 70+ data sources into an 18-page report with a composite IQ Score (0–100) — covering flood, EPC, crime, schools, transport, ground stability, investment potential, and more.
Frequently asked questions
The Environment Agency classifies flood risk into Zones 1 (Low), 2 (Medium), 3a (High), and 3b (Functional Floodplain). Zone 1 means less than 0.1% annual chance of flooding. Zone 3 means greater than 1% chance from rivers or 0.5% from the sea. HouseCheckup shows your property's zone plus surface water and reservoir flooding risk.
Yes. Properties in Flood Zone 2 or 3 may face higher insurance premiums or struggle to get cover. The Flood Re scheme helps homeowners in high-risk areas access affordable insurance. HouseCheckup's Complete report includes Flood Re eligibility assessment.
HouseCheckup uses official Environment Agency Flood Map for Planning data, Risk of Flooding from Rivers and Sea data, and surface water flooding data — the same sources used by local authorities and insurers. Data is updated when the Environment Agency publishes new assessments.
Yes. The Complete and Investor Pro reports include climate projections showing how flood risk may change by 2050 and 2080 under different emission scenarios, plus coastal erosion data from the National Coastal Erosion Risk Mapping programme.
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