Flood risk check for any UK property
See whether a property sits in an Environment Agency flood zone before you make an offer. River, surface water and coastal risk — from official data, in minutes.
Data source: Environment Agency · Included in every report from £19
1 in 6
UK homes are at risk of flooding from rivers, the sea or surface water
£800/yr
Typical insurance premium increase for a Flood Zone 3 property
3 zones
EA risk levels: low, medium and high — we show all three
What the flood risk check includes
River and coastal flood zone
The Environment Agency's defined flood zone — Zone 1 (low), Zone 2 (medium) or Zone 3 (high) — tells you the statistical probability of river or coastal flooding in any given year.
Surface water risk
Published separately from river risk, surface water flooding from heavy rainfall is increasingly the more common cause of residential flooding. We include the EA surface water risk level for the specific address.
Insurance implications
High flood risk can make standard buildings insurance difficult or expensive to obtain. We flag Zone 2 and 3 ratings clearly so you know to check insurability before committing to an offer.
Mortgage lender impact
Some mainstream mortgage lenders restrict lending on properties in Flood Zone 3. Knowing the zone before you apply — rather than at survey stage — avoids wasted solicitor and survey fees.
Negotiation evidence
A medium or high flood zone rating is legitimate grounds to negotiate a price reduction. We include the zone in a clear, shareable format you can reference in your offer.
Included in every report
Flood risk data is included in the Basic plan (£19) and above — you do not need an Enhanced report to see the flood zone for any UK address.
Check any UK address now
Flood Risk Check included in every Property Snapshot report from £19.
Frequently asked questions
What flood risk zones exist in England?
The Environment Agency uses three zones: Flood Zone 1 (low — less than 0.1% annual probability), Flood Zone 2 (medium — 0.1% to 1%), and Flood Zone 3 (high — greater than 1%). Zone 3 is further split into 3a (functional floodplain) and 3b (high risk). Most mortgage lenders will lend on Zone 1 without restriction; Zone 2 and 3 attract higher insurance premiums and some lenders apply restrictions.
Does flood risk affect my mortgage?
It can. Some lenders apply higher rates or restrict lending on Flood Zone 2 and 3 properties. Buildings insurance can also become significantly more expensive or, in very high-risk cases, unavailable through standard providers. Knowing the zone before you offer means you can check insurability and get a quote before committing.
What is surface water flood risk and why does it matter?
Surface water flooding happens when heavy rainfall overwhelms drainage — it is separate from river and coastal flooding and is increasingly common due to climate change. A property can be low risk for river flooding but high risk for surface water. The Environment Agency publishes surface water risk separately, and Property Snapshot includes both in every report.
Does this cover Scotland and Wales too?
Environment Agency data covers England. For Scotland, flood risk mapping is managed by SEPA; for Wales, by Natural Resources Wales. Property Snapshot surfaces the relevant agency's data for the address regardless of country.
Can a property in a low-risk zone still flood?
Yes. Risk zones are statistical probabilities, not guarantees. Even a Zone 1 property can be affected by a localised drainage problem, a blocked drain, or a one-off extreme weather event. The risk rating tells you the long-run probability, not whether flooding is impossible.
Is this the same as the EA Flood Map for Planning?
Property Snapshot uses Environment Agency flood risk data and presents it alongside all other property data in one report. For detailed planning decisions, the local planning authority uses the same underlying EA data. The EA Flood Map for Planning is the authoritative source, and our data is drawn from it.