W6 flood risk: Hammersmith, London
A Zone 3 record matches the representative map point
The Planning Data flood-zone dataset records Zone 3 at the representative point for Hammersmith, London (W6). 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); 18 flood-warning areas within 2 km incl. Tidal Thames from Mortlake High Street East to Richmond Bridge; 196 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.
Recorded flood history nearby
The Environment Agency has 1 recorded flood outline within ~250 m of the representative point for W6:
- TTD_FEO_19286 Jan 1928 – 7 Jan 1928 · tidal
Ask the seller to confirm the property's flood history on the TA6 Property Information Form.
Climate-change river-flow uplift
Management catchment: London (Thames). Projected % uplift to peak river flow vs the 1961–1990 baseline (river flooding only):
| Epoch | Central (50%) | Higher central (70%) | Upper end (95%) |
|---|---|---|---|
| 2020s | +10% | +14% | +26% |
| 2050s | +7% | +14% | +30% |
| 2080s | +17% | +27% | +54% |
River (fluvial) flooding only — says nothing about surface-water or tidal change.
Flood defences nearby — and their condition
196 flood-management assets within about 1.5 km, the nearest 12 detailed: 12 built defences (nearest 377 m); none of the detailed assets carries a condition grade. The flood zone is modelled as if these defences were not there, and a defence only protects while it is maintained — check the exact address for the defences nearest to it.
- flood defence · River Thames377 m · condition not graded by the EA · Private individual, Company or Charity
- flood defence · River Thames380 m · condition not graded by the EA · Private individual, Company or Charity
- flood defence · River Thames380 m · condition not graded by the EA · Private individual, Company or Charity
- flood defence — wall · River Thames383 m · condition not graded by the EA · Private individual, Company or Charity
- flood defence — wall · River Thames383 m · condition not graded by the EA · Private individual, Company or Charity
- flood defence · River Thames383 m · condition not graded by the EA · Private individual, Company or Charity
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 W6 address
This page uses one representative point for W6. 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 W6 in a flood zone?
The Planning Data flood-zone dataset records Zone 3 at the representative point for Hammersmith, London (W6). 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 W6 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.