Flood Risk in SW18 4SU

London, Greater London

Low flood risk area
No properties in this postcode are within EA flood zones 2 or 3.
Total properties 42
Flood Zone 2 0
Flood Zone 3 0

Check long-term flood risk on GOV.UK →

Active Flood Warnings

Warning no longer in force
Ravensbourne area in the London Boroughs of Lewisham, Bromley, Greenwich and Croydon · 27 Aug 2026 16:10

There is no longer a threat of flooding, though standing water and debris may still remain.  Further rainfall is forecast but no further flooding is expected.   We will continue to monitor the situat…

Frequently Asked Questions

Is SW18 4SU in a flood zone?

No properties in SW18 4SU are within an Environment Agency flood zone. This postcode has a low risk of flooding from rivers and the sea.

Are there any active flood warnings near SW18 4SU?

Yes, there is currently 1 active flood warning in the area. Check the Environment Agency website for the latest updates.

How can I check the flood risk for a property in SW18 4SU?

You can check flood risk on PropertyPulse by viewing any property page in SW18 4SU, which shows the flood zone status. You can also use the GOV.UK long-term flood risk checker at check-long-term-flood-risk.service.gov.uk.

Where is SW18 4SU located?

SW18 4SU is located in London, Greater London, England.