High court ruling permits floodplain housing despite failed safety test

A high court judgment has determined that residential development can proceed on floodplains in England and Wales even if the project fails a critical safety assessment. The decision clears the path for a controversial scheme of 190 new homes in north Somerset, which is located in flood zone 3a. This zone represents the highest level of flood risk before land is classified as a functional floodplain. The ruling has prompted calls for urgent legislative change to prevent the establishment of a national precedent that could undermine existing planning protections.

The case involved Persimmon Homes, which secured permission for the development despite failing the sequential test. This test is designed to act as the primary barrier against building on floodplains, requiring developers to demonstrate that no safer alternative sites are available. In this instance, the planning inspector identified 12 alternative locations with lower flood risk. Nevertheless, the court agreed that the inspector was entitled to weigh the wider benefits of the development and its potential to be made safe over its lifetime, even after the sequential test had not been met. This interpretation has been described as a significant exploitation of planning loopholes by critics.

The decision has caused considerable concern among government ministers, environmental experts, and local authorities. At a flood resilience conference held on Wednesday, it was agreed that a campaign is necessary to amend the national planning policy framework. Tessa Munt, chair of the flooding and flooded communities all-party parliamentary group, stated that the judgment is dangerous and nationally significant. She plans to meet Matthew Pennycook, the housing and planning minister, to request changes to the policy framework. Munt argued that the ruling allows planners and developers to make speculative housing applications that bypass essential environmental safeguards.

Annemieke Waite, the cabinet member for planning and environment at North Somerset council, accused the developer of exploiting a legal loophole. She emphasised that the council is not opposed to new housing but rejects the creation of a precedent that allows local environmental protections to be overridden. The Environment Agency had objected to the development on flood risk grounds, and the ruling is seen as contradicting the efforts of insurers, lenders, and government bodies to manage flood risk nationally. The joint initiative between the government and the insurance industry, Flood Re, aims to make flood cover affordable, but the court decision is viewed as undermining these broader policy objectives.

Residents living near the proposed site have expressed deep distress over the ruling. A group of 51 residents gathered at the site earlier this week to voice their opposition. Sue Gardiner, whose property overlooks the development, stated that the decision increases the likelihood of similar projects being approved elsewhere without adequate consideration of flood risk. She reported that she and others have been refused insurance by three major providers due to the increased flood risk associated with the plans. Without adequate insurance, homeowners fear their properties could become unmortgageable and unsellable, jeopardising their financial security and inheritance.

Richard Croucher, another resident whose home borders the site, expressed fear that the development will devalue his property, which was intended to fund his care in old age. He described the situation as terrifying, noting that the potential loss of asset value leaves him without a safety net for his future needs. Persimmon Homes responded by stating that its proposals were subject to detailed scrutiny at a public planning inquiry. The company asserted that flood risk was considered thoroughly during the planning process and that permission was granted by an independent inspector after this review.