Yes, in parts, and the parts matter more than the average. Most homes sit well clear of the water. A minority sit squarely in its path. The long-term plan for the shoreline changes its mind halfway through the century. Larkfield is a place to buy by address, never by postcode, and never by the listing's silence on the subject.
On the Environment Agency's river-and-sea flood zones, about 8% of Larkfield's postcodes sit in Zone 3, the highest-probability band. A further 5% sit in Zone 2, the medium-probability fringe beyond it. The two bands do not overlap, so Zone 2 being the smaller figure is correct rather than reassuring.
Surface water, the flooding that comes from rain with nowhere to go, has no standalone figure in the data for this area. It is folded into the postcode measure further down. What is recorded separately is history: about 8% of postcodes fall in areas with recorded historic flooding, across 56 recorded flood events. The latest on record, in December 1965, came from the sea when defences were overtopped. Around 9% of postcodes also sit within the Lower Medway Internal Drainage Board's district, which exists because this land needs managing to stay dry.
Looking forward, the Environment Agency's climate-adjusted flood zone takes in about 17% of postcodes. That is the map drawn for the water levels planners expect later, not the ones today. A house bought now will spend most of its mortgage term in that future.
Insurance follows the address, and flood-zone homes can face higher premiums, larger excesses or fewer insurers willing to quote. The time to learn that is before the survey is booked, not after the solicitor sends the searches.
Count postcodes flagged on at least one flood measure, surface water included, and about 15% rate high, 17% medium and 37% low. These bands overlap with the zone figures above. They are a wider net cast by a different method, and they should never be added to the zone shares.
The Environment Agency's rivers-and-sea mapping also counts properties, and a count of homes tells you more than a share of postcodes. Across the 106 postcodes that carry some risk, it lists 2,747 properties. Of those, 347 are at high risk, 319 of them homes, with 210 at medium risk, 462 at low and 265 at very low. Postcodes carrying no risk are left out of that list entirely.
Whether anything stands between the water and the house is the harder question. About 9% of postcodes sit inside the high-probability flood extent with no defence in the model, and about 3% sit inside it where a defence is present. A modelled defence is a structure on a map. It is not a promise that your kitchen stays dry, and 1965 is on record as the year one was overtopped.
The mapped coastline is closer than most buyers assume. About 12% of postcodes lie within 500 metres of it, the nearest is about a metre away, and the median distance is about 1.3 kilometres. That 500-metre line is a threshold in the data, not a verdict on any single address.
The shoreline management plan for this stretch sets a policy to hold the line for the next 20 years, then managed realignment at the 50-year and 100-year horizons. Holding the line means maintaining existing defences. Managed realignment means letting the shoreline move back in a controlled way. Both are stated intentions, not guarantees, and the switch between them is written down for anyone who reads the plan rather than the brochure.
At Dover, the nearest tide gauge, sea level rose by about 2 millimetres a year over its 1961 to 2010 record. That is a measured historic rate, not a forecast.
Before you commit to a Larkfield address:
- Put the exact address into the Environment Agency's long-term flood risk service, for rivers and sea and for surface water separately.
- Get an indicative buildings insurance quote before instructing a solicitor.
- Ask the seller directly whether the property has ever flooded or made a flood claim.
- Check whether the address falls within the Lower Medway Internal Drainage Board's district.
- Ask your surveyor to note any flood resilience measures, or the lack of them.
Flood risk is Larkfield's weak spot: patchy rather than universal, but real where it lands. Buy on the dry streets and it is a footnote. Buy on the wrong one and it becomes the whole story.