Yes, in places, and the places are the whole point. Around one postcode in five carries a high flood rating on at least one measure. About seven in a hundred sit in the highest river-and-sea zone. This is a town that grew up on a river and a canal, and the water has no interest in which century the houses went up. Most of Taunton will never flood. That is not the same sentence as most of Taunton is fine.
On the Environment Agency's river-and-sea mapping, about 7% of the area's postcodes fall in flood zone 3, the highest-probability band, and about 8% in flood zone 2. Those two are separate bands rather than nested ones. Zone 2 is the additional medium-probability fringe sitting outside zone 3, so the smaller-looking zone 3 number is not a subset error, it is the tighter core of the risk.
Those zone maps only describe rivers and the sea. Surface water, the kind that arrives because a drain gave up during a downpour rather than because a river came over its bank, is not in them, which is how a house with a clean zone check still ends up with a wet kitchen. The historical record for this area carries 106 recorded flood events, the most recent in November 2000, logged as overtopping of defences on a main river, and about 6% of postcodes sit inside the mapped extents of past flooding.
Looking forward rather than back, the Environment Agency's climate-change allowance widens the picture considerably. Under that scenario about 24% of the area's postcodes fall inside a flood zone. That is a modelled allowance for a warmer future rather than a forecast of next winter, but it is the number a mortgage lasting decades will eventually meet.
For insurance, the practical effect is that address-level risk drives the quote, not the town's average. Get an indicative buildings quote before instructing a solicitor rather than after, because a refusal or an excess measured in thousands is easier to absorb as a negotiating point than as a surprise. Flood Re, the industry-backed scheme that helps insurers offer cover on higher-risk homes, does not cover homes built since 2009, so a new build in a risk area gets none of that cushion.
Pulling every indicator together, including surface water alongside rivers and sea, about 18% of postcodes here rate high on at least one measure, about 20% medium and about 46% low. Those bands overlap with the flood-zone figures rather than adding to them, so a postcode can appear in both counts. It is one town measured several ways, not several towns.
Counted as homes rather than postcodes, the Environment Agency's rivers-and-sea mapping puts 140 properties at high risk, 187 at medium and 2,619 at low, out of 6,925 properties across the postcodes that carry any risk at all. Of the high-risk properties, 82 are residential. Only postcodes with some level of risk appear in that count, so the total is the exposed part of the town, not the town.
Whether anything stands between the water and the house is the question buyers skip. About 8% of postcodes sit inside a modelled high-probability extent with no defence present in the model, and about 5% inside one where a defence is present. Defended is a description of the model, not a promise about the property. Defences are overtopped, which is precisely what the last recorded event here was.
Shoreline management policy touches almost nothing here, covering about 0.1% of postcodes, and where it does apply the stated policy is hold the line across the 20, 50 and 100 year horizons. A policy is an intention to maintain defences over that period. It is not a defence that already exists, and it is not a guarantee that funding follows.
At the nearest tide gauge, at Devonport, the measured record from 1962 to 2015 shows sea level rising about 2.4 millimetres a year. That is what was recorded over that period rather than a projection of what comes next.
Flooding is the weak spot in Taunton's otherwise comfortable profile, and it is street-specific rather than town-wide. Check the individual address on the Environment Agency's long-term flood-risk tool before you fall in love with the kitchen, because the town average will tell you nothing useful about the house you are actually buying.