SW8 flood risk: Nine Elms & South Lambeth, London
A Zone 3 record matches the representative map point
The Planning Data flood-zone dataset records Zone 3 at the representative point for Nine Elms & South Lambeth, London (SW8). This is a planning-map observation at one point, not the flood probability or history of every home in the area. Check the current Environment Agency maps and the exact property before committing.
Zone 3 (tidal) at the representative point; 1 recorded flood event within 250 m (1928); 13 flood-warning areas within 2 km incl. Tidal Thames at Westminster; 96 EA flood-management assets within 1.5 km. Environment Agency registers read 2026-10-09.
Flood zone band
These are planning-zone definitions. Only a returned Zone 2 or 3 match is highlighted. Planning Data lists new data last found on 24 August 2023 (checked 5 September 2026); confirm the current position on the Environment Agency map. Read what Flood Zone 3 means for a buyer — mortgage, insurance, Flood Re and resale.
Below a 1-in-1,000 annual chance from rivers/sea.
1-in-100 to 1-in-1,000 annual chance from rivers.
1-in-100 or greater from rivers; 1-in-200 from the sea.
Mapped flood types at the representative point: Tidal Models.
Flood defences nearby — and their condition
The Environment Agency's flood-defence asset register did not answer for the SW8 representative point, so we cannot say whether defences protect this area or what condition they are in — missing information, not a finding.
Environment Agency Asset Management register (Open Government Licence v3.0), read at the representative point. For the defences nearest a specific address, with their condition, maintainer and last inspection, run the flood-history check.
What this means for buyers and insurance
Flood zones are mapped at street level — an outcode is too coarse to decide on a single property. A home a few metres from a Zone 3 boundary can be Zone 1, and vice versa. Treat this page as the area context, then check the exact address.
Ask the lender which searches are needed and obtain an insurance quote for the exact property. Flood Re provides reinsurance for eligible risks; the insurer sets the customer's premium, excess and terms. Ask the seller about previous flooding and have your conveyancer follow up the answers and supporting documents. How Flood Re works.
Check a specific SW8 address
This page uses one representative point for SW8. Our free guide explains the available screening and its limits. Complete (£24.99) combines available property records into a human-checked report; postcode and area data cannot establish this building's full flood history or an insurance decision.
Try or search any UK postcode
Frequently asked questions
Is SW8 in a flood zone?
The Planning Data flood-zone dataset records Zone 3 at the representative point for Nine Elms & South Lambeth, London (SW8). This is a planning-map observation at one point, not the flood probability or history of every home in the area. Check the current Environment Agency maps and the exact property before committing.
What do the flood zones mean for buying a house?
Flood Zone 1 is low risk (below a 1-in-1,000 annual chance of river flooding). Zone 2 is medium (1-in-100 to 1-in-1,000). Zone 3 is high (1-in-100 or greater from rivers, or 1-in-200 from the sea). A home in Zone 2 or 3 can be harder to insure and mortgage, and you should ask the seller about flood history on the TA6 Property Information Form.
Does a flood zone affect insurance and mortgages?
A planning zone does not determine the premium, lender decision or Flood Re eligibility. Flood Re is a reinsurance scheme; insurers set the customer's prices and terms. Ask the lender and obtain a quote for the exact property, checking any scheme eligibility with the insurer.
How do I check flood risk for a specific SW8 address?
Start with the Environment Agency long-term flood service and Flood Map for Planning, and ask separately about previous flooding and insurance terms. Our free tool explains postcode screening; Complete (£24.99) brings available records into a human-checked report with source and location limits. It cannot establish this building's full flood history or insurance terms.
Sources
- Long-term flood risk check — Environment Agency / GOV.UK
- Flood Map for Planning (flood-risk-zone) — planning.data.gov.uk
- Outcode geocoding — postcodes.io
Flood data © Environment Agency copyright and/or database right 2026 (OGL v3.0). Flood Re eligibility based on floodre.co.uk criteria — indicative only; insurers make final decisions.