Flood risk in NW3
The NW3 postcode district has mostly low flood risk. Across 1,000 postcodes, here is the split across Environment Agency flood zones.
Flood zones in NW3
Zone 1, Low risk
1,000 postcodes (100%)Less than a 1 in 1,000 annual chance of river or sea flooding. Suitable for all types of development.
Zone 2, Medium risk
0 postcodes (0%)Between a 1 in 100 and a 1 in 1,000 annual chance of flooding. Most development needs a Flood Risk Assessment.
Zone 3, High risk
0 postcodes (0%)A 1 in 100 or greater annual chance of flooding. Development is restricted and the Sequential and Exception Tests usually apply.
What flood zones mean for development
Flood zones describe the chance of flooding from rivers and the sea, ignoring any flood defences. Zone 1 land is suitable for all development. Zone 2 land usually needs a Flood Risk Assessment. Zone 3 land carries real planning constraints, and a residential scheme there normally has to pass the Sequential Test and, where relevant, the Exception Test.
Surface water flooding, drainage and the presence of defences are separate questions. Treat this page as a first screen, then commission a site-specific Flood Risk Assessment before you commit to a site.
Flood zones, plot by plot
Landhunt overlays flood zones on real parcel boundaries, with planning history, ownership and sold prices alongside, so you can judge a site properly before you bid.
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Source: Environment Agency (England) and Natural Resources Wales flood zone data. Figures are indicative and based on the postcodes recorded for this district. They do not account for flood defences or surface water flooding and do not replace a site-specific Flood Risk Assessment.