Some of it is, and the water to worry about is falling from the sky rather than arriving from the sea. The river and sea zones touch only a small slice of the village. The broader indicators, which include surface water, catch a much bigger share. The coast is over three kilometres away and stays there. This is a valley village on the wrong side of a heavy afternoon, not a seafront gamble.
Start with rivers and the sea, because that is the measure most people mean. In the Environment Agency's flood zones, 4% of the village's postcodes fall in zone 3, the higher-probability band, and 7% fall in zone 2, the additional medium-probability fringe that sits beyond zone 3 rather than containing it. Those are shares of postcodes, and between them they leave the large remainder of the village outside the river and sea zones entirely.
Surface water is where the picture changes, and it is a different measure entirely. When all the flood indicators are taken together, including water that runs off ground rather than out of a channel, 18% of postcodes carry a high rating on at least one measure, 32% a medium rating and 46% a low one. Those bands overlap with the zone figures above rather than adding to them. The practical translation is a village on sloping ground where the road, the drain and the gradient decide who gets wet, and where two houses on the same lane can have completely different answers.
Looking forward, the Environment Agency's climate allowance raises the share of postcodes inside the flood zones to 14%, roughly double the current zone 2 figure. That is a modelled future extent rather than a prediction about any particular year.
For insurance, this is the sort of profile where the postcode alone will not settle it. Some addresses here will price like any other rural property and some will attract questions, an excess loading or a request for a survey, and the difference will come down to which side of a slope the house sits on. Get an indicative quote on the specific address before you instruct a solicitor, not after.
On homes rather than postcodes, the Environment Agency's rivers-and-sea mapping counts properties: 3 at high risk, 14 at medium and 25 at low, out of 188 properties across the eight postcodes that carry any recorded risk at all. Only one of the high-risk properties is residential. Postcodes with no risk do not appear in that count, which is why the total is a fraction of the village.
On whether anything stands between the water and the house, the modelled extents put 4% of postcodes inside a high-risk extent with a defence present in the model and 4% inside a high-risk extent with none. A defence appearing in the model means a structure exists in the mapping, not that the property behind it is safe, and defended extents are still flood extents.
The shoreline management plan for the coast nearest here is no active intervention across all three horizons, the twenty-year, the fifty-year and the hundred-year. That means no commitment to build or maintain coastal defences on that stretch, which for a village more than three kilometres inland is a statement about the coastline rather than about these houses.
The nearest tide gauge, at Devonport, recorded sea level rising at about 2.35 millimetres a year across its record from 1962 to 2015. That is a measured historic rate over that period, not a forecast, and it belongs to the coast rather than to this valley.
There is no recorded historic flooding in the area at all: none of the village's postcodes carry a recorded past flood event. That is genuinely reassuring, and it is also not proof that nothing has ever come through a door here. Records begin when someone starts keeping them.
Flooding is the weakest thing about Polgooth, and the reason is drainage rather than geography: the village sits well away from the sea and mostly outside the river zones, but the surface-water indicators catch enough of it that the risk is address-specific rather than village-wide. Take the exact postcode to the Environment Agency's long-term flood risk tool before you fall in love with a particular house.