A recent High Court ruling has shockingly allowed the construction of nearly 200 homes in a high-risk flood zone in North Somerset, sparking “great concern” from local authorities and residents alike.
North Somerset Council had challenged Persimmon’s plans to develop housing on flood zone 3a land near the village of Yatton, an area highly vulnerable to flooding from the sea. The council argued that the existing flood risks should prevent such developments. However, the court upheld the earlier planning inspector’s decision, emphasizing the urgent need for housing in the region.
Under the judgment, building on flood-prone land is permissible if effective evacuation plans ensure residents’ safety, even if flooding occurs. The appeal focused on fields just five metres above sea level, with modelling indicating a 42-hour window for potential flooding following a catastrophic sea defense breach — a timeframe deemed sufficient for evacuation.
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North Somerset Council expressed deep disappointment, criticizing the ruling for relying on evacuation as flood risk mitigation. “The emotional, practical and financial impact of flooding events can be significant and long-lasting,” a council spokesperson stated, emphasizing that resident safety should not depend on evacuation plans alone.
Persimmon’s proposal includes raising the land’s elevation to reduce flood risks, with half the homes designated as affordable housing and 70% of the site preserved as open space featuring orchards, play areas, and biodiversity improvements.
Local councillor Steve Bridger highlighted concerns that the ruling weakens councils’ ability to oppose developments in flood-prone zones, underscoring a disconnect between planning policies and homebuyer expectations. “Planning policies prioritize the safety of people, not necessarily property. This means flooding might still impact homes, even if residents can be evacuated safely,” Bridger explained.
North Somerset Council, working on a comprehensive 15-year local plan, aims to direct development away from flood-risk zones and has opted to release green belt land instead to meet housing targets. The council now awaits updates to the Government’s National Planning Policy Framework (NPPF) for stronger protections against new housing in vulnerable areas.
The case has been described as “nationally significant” for planning law, setting a precedent that balances housing demand with flood safety measures. Keating Chambers, representing Persimmon, hailed the decision as a huge milestone for the planning and development sectors.