The Environment Agency's latest national assessment (NaFRA2, published December 2024) puts around 6.3 million properties in England — roughly one in four — in areas at some risk of flooding from rivers, the sea or surface water, heading towards 8 million by mid-century under its climate projections. Most buyers find out where their house sits after they've fallen for it. This is the short version of how to find out before you exchange, and what each check costs.
The Environment Agency assigns every area of England a long-term flood-likelihood band for rivers and sea, from High (greater than 3.3% chance in any year) down to Very Low. Run the official GOV.UK check — it's free and instant — or enter the postcode below to see the band with the history alongside it. Either way, know the band before you offer.
A model tells you likelihood; history tells you what happened. The Environment Agency has mapped roughly 32,000 recorded flood extents in England since 1946 — if water reached this street in 2007, 2014 or 2021, that's on the record. A place that has flooded twice tells you more than any band. This history isn't in the free GOV.UK check; it's the core of our property flood-risk report and of the professional searches.
How often does the Environment Agency actually warn this area? Official flood alerts and warnings have been logged since 2006 — an area with dozens of warnings nearby lives a different life from one with none, even inside the same risk band.
Being near a river isn't the risk — it's how that river responds to rain. Some catchments are "flashy" (rising within hours of a storm), some barely move. Live river gauges, their typical ranges and their highest-ever levels tell you which kind of river you'd be living with. No static PDF report shows this; FloodRadar monitors 3,000+ gauges live.
The Law Society's flood practice note suggests buyers investigate whether they can get cover on acceptable terms before they commit. In practice: get a real quote for the specific address before exchange. Homes built before 1 January 2009 and used as a residence usually fall within Flood Re, the scheme that caps flood premiums and excesses (due to conclude in 2039); homes built in or after 2009 sit outside it.
The official risk band is free in the preview — the full report (flood history since 1946, warning record, river behaviour, storm overflows, insurance outlook) is £19, instant, no account needed. See a complete sample report first →
Prices are published inc-VAT figures we verified in July 2026; they move, and reseller markups vary.
Before offering: run the free band check on any postcode you're serious about.
Anything above Very Low — or riverside, or you just want the history: get the full data picture for £19 and read it in five minutes.
Get an insurance quote for the specific address before exchange. If anything looks difficult, that's your negotiating information.
If the data flags real risk, commission a professional flood search through your conveyancer — and let them advise on it.
No — there is no legal requirement. But the Law Society's flood practice note (first issued 2013, last updated January 2020) asks conveyancers to consider flood risk on every purchase, and lenders and insurers increasingly ask the question themselves. Checking before exchange is about avoiding a surprise after it.
Often, yes — and you should run it either way. It gives the area's long-term likelihood band and depth bands. What it doesn't give you is the history in one place: recorded flood outlines since 1946, the nearby warning record since 2006, and how the local rivers actually behave. If the free check shows very low risk and the area has no flood history, you may not need anything more.
A professional flood search (typically £23–£112) comes with a professional opinion and professional-indemnity insurance behind it — this report doesn't, and doesn't pretend to. It's a data report: the official band, the recorded history, the warning record and live river behaviour, compiled and readable in minutes. Many buyers use it to decide whether a formal search is worth commissioning.
Before you make the offer, ideally — it's free to check the official band, and flood risk can shape both the price you offer and the insurance quotes you should get before exchange. The Law Society note specifically suggests investigating whether cover is obtainable on acceptable terms before committing.
It can. Insurers price on flood risk, and some lenders ask about it in higher-risk areas. Homes built before 1 January 2009 and used as a residence are usually within the scope of Flood Re, the scheme that caps flood premiums and excesses (due to conclude in 2039); homes built in or after 2009 are outside it — worth confirming the build date with the seller.
Full report £19 · instant · permanent emailed link · 14-day money-back guarantee.
More on flood reports: What's inside the £19 report · Flood report prices compared · The free GOV.UK check, explained · Free flood-risk answers by postcode district
Data: Environment Agency, SEPA and Ordnance Survey / Royal Mail / ONS postcode data, used under the Open Government Licence v3.0 with the required attributions shown on every report. FloodRadar is not an emergency service — always follow official warnings.
