Yatton Floodplain Ruling: 190 Homes Approved Despite Flood Test Failure

The High Court has ruled that homes can be built on a floodplain in England and Wales even when a project fails the sequential test for flood risk.

The ruling keeps outline permission in place for up to 190 homes at Land at Rectory Farm (North), Chescombe Road, Yatton, in North Somerset, as reported by The Guardian. Outline permission means approval in principle, with detailed designs to come later. The site sits in flood zone 3a, the highest risk rating before land is classed as functional floodplain. The sequential test is the rule that directs new building to areas with lower flood risk first.

The developer is Persimmon Homes. Its outline proposal is for up to 190 homes, including 50% affordable homes, with 0.13ha set aside for Class E uses, a category that covers shops and offices, and allotments. North Somerset examined the scheme through a public inquiry into non-determination of the outline application, which happens when a council has not decided in time. Planning appeal 3343144 then allowed the appeal and granted outline permission, according to the appeal decision.

Flood risk ran through the case. The Environment Agency, the public body consulted on flood risk, objected on those grounds. The inspector identified 12 alternative sites at lower flood risk. On that basis, the proposal failed the sequential test. Permission was still granted.

North Somerset challenged the appeal outcome in the High Court. Charles Banner KC represented Persimmon in the council's case. The court held that, despite failure of the sequential test, the inspector was entitled to weigh the wider benefits of the development and whether it could be made safe for its lifetime. That point decided the case. Permission stood.

The broader context here is discretion. The judgment treats failure of the sequential test as a serious factor, not a veto. An inspector can note the failure, note the alternatives at lower risk, note the Agency objection, and still grant permission after assessing lifetime safety and wider benefits. Process and substance stay linked, but one does not automatically settle the other.

Looking at what this means for planning in England and Wales, councils, developers and inspectors will study the Yatton outcome. Councils must weigh how to handle an Agency objection when considering a legal challenge. Developers will note room to argue benefits and managed lifetime risk even after losing the sequential argument. Inspectors have confirmation of flexibility, with a duty to explain why they used it. Flood zone 3a bids, affordable housing claims and mixed-use parts such as small commercial space and allotments will now be tested against this reading. The ruling does not remove flood risk from planning. It leaves the final judgment with the decision-maker, with reasons open to court scrutiny.

For residents and local politics, the tension is direct. Housing need and flood safety pull in different directions, and the court has confirmed that planning law allows both to be weighed together.