Flood Risk in SE21 8DU

London, Greater London

Low flood risk area
No properties in this postcode are within EA flood zones 2 or 3.
Total properties 15
Flood Zone 2 0
Flood Zone 3 0

Check long-term flood risk on GOV.UK →

Active Flood Warnings

Flood Alert
Ravensbourne area in the London Boroughs of Lewisham, Bromley, Greenwich and Croydon · 26 Aug 2026 20:16

High river levels tomorrow morning may lead to flooding.  Flooding is possible on 27 August 2026 from 05:00- 09:00.  Locations most affected will be low lying land and roads near rivers.  We are close…

Frequently Asked Questions

Is SE21 8DU in a flood zone?

No properties in SE21 8DU 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 SE21 8DU?

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 SE21 8DU?

You can check flood risk on PropertyPulse by viewing any property page in SE21 8DU, 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 SE21 8DU located?

SE21 8DU is located in London, Greater London, England.