Findon's flood risk is low from rivers and the sea, and not zero from the rain. No postcodes sit in the river-and-sea flood zones. No flooding is on record. About one postcode in nine still carries a high flag on some measure. The sea is miles away, so the question is surface water, not the coast.
Start with the measure most people mean when they say flood zone. On the Environment Agency's river-and-sea mapping, 0% of Findon's postcodes fall in flood zone 3, the highest-probability band, and 0% fall in flood zone 2, the medium-probability fringe that sits beyond it. The two are separate bands, and both come back empty. For a village on the slope of the Downs, that's the expected answer, and it's the answer a listing will lead with. It covers rivers and the sea only.
Surface water runs on a different measure, and it's where Findon's risk lives. Rain that can't soak away fast enough follows the lie of the land, and a village sitting under hills has plenty of land for it to follow. There's no standalone surface-water share for Findon, but it's folded into the postcode indicators set out further down, and those do register something.
Looking forward, the Environment Agency's climate-adjusted flood zone, which models how the river-and-sea zones could spread under future conditions, also covers 0% of Findon's postcodes. On the planning horizon those maps use, the rivers and the sea don't reach the village.
For insurance, the empty flood zones help, because insurers lean on river-and-sea mapping first. The surface-water flags are the part to raise directly. A home in a flagged postcode can still attract questions, excesses or a higher premium even with no flood zone attached, and the time to find out is before the solicitor is instructed, not at renewal.
At postcode level, the measure widens to take in surface water alongside rivers and sea, and a postcode counts if it rates at that level on at least one indicator. On that basis, about 11% of Findon's postcodes rate high on at least one measure, about 15% rate medium and about 26% rate low. These bands overlap with each other and with the flood-zone figures above, so they can't be added together or read as the same thing. What they say, taken with the empty flood zones, is that the flags come from something other than a river bursting its banks. Rain on a slope is the most plausible culprit, and it tends to pick individual streets rather than whole villages, which is why the address matters more than the postcode average.
On defences, the modelled high-risk flood extent covers 0% of Findon's postcodes, whether defended or undefended. Nothing needs to stand between the water and the house in that model, because the model doesn't put the water there. That's not a promise about surface water, which defences of that kind aren't built for anyway.
The coast sits about 6.8 kilometres away for the typical Findon postcode, and the shoreline management plan for that stretch is to hold the line over the next 20, 50 and 100 years. Holding the line is a stated intention to keep maintaining the defences on that frontage. It isn't a guarantee, and it isn't a wall that exists yet. At Findon's distance from the water, it matters more to the towns on the shore than to the village.
The nearest tide gauge, at Portsmouth, recorded sea level rising by about 2 millimetres a year across its record from 1962 to 2023. That's a measured historic rate at that gauge, not a forecast for Findon, and at several kilometres inland it's background rather than a threat.
No historic flooding is recorded for Findon, with 0% of the area inside a mapped past flood outline. That's genuinely reassuring. It's also a record of what got mapped, not a sworn statement that no garden has ever been under water, and a seller's "never flooded" deserves the same follow-up question as any other claim made during a sale.
Findon sits in the middle on flood risk. The rivers and the sea leave it alone, and the surface-water flags on about one postcode in nine are the reason it doesn't rate better.