Estimated reading time: 6 minutes
Key Takeaways
- The council’s *judicial review* seeks to overturn the Secretary of State’s approval for an 800-home scheme.
- Alleged **legal errors** focus on misinterpretation of the National Planning Policy Framework (NPPF).
- The case could *strengthen neighbourhood plans* and reshape future planning appeals.
- Local sustainability and active travel goals are central to the challenge.
- A ruling is expected within months, potentially setting a national precedent.
Table of contents
Background of the Decision
In July 2025 the Secretary of State for Housing, Communities and Local Government granted outline permission for up to 800 homes on the former Southwater golf course. This followed the Planning Inspectorate’s decision to uphold the developer’s appeal against Horsham District Council’s earlier refusal. The Inspector relied heavily on key passages of the National Planning Policy Framework (NPPF), arguing the scheme met the test of “sustainable development.”
As reported by Local Government Lawyer, the council immediately signalled its intent to contest the ruling, describing it as a threat to local democratic planning.
Reasons for Judicial Review
- Legal errors in policy interpretation – the council says the Inspector misapplied NPPF guidance on sustainable development.
- Undermining of the Southwater Neighbourhood Plan – deemed “out of date” despite being adopted in 2021, a stance the council calls “plainly wrong.”
- Sustainability concerns – questions over active travel, public transport links and carbon impacts of the site.
Implications for Local Planning
A successful challenge could strengthen neighbourhood plans nationwide, giving communities greater leverage to block unpopular large-scale schemes. Conversely, if the ruling stands, councils may find it harder to rely on local policies when national housing targets are at stake.
Planning consultants suggest it could *reshape the balance* between localism and central oversight, particularly around NPPF paragraph 14 and five-year housing land supply calculations.
Legal Perspective
Cornerstone Barristers have been instructed to argue that the Inspector’s decision was “irrational and unlawful.” They cite previous High Court cases where neighbourhood plans were afforded significant weight, even in the face of housing shortfalls.
Legal commentators note that while courts rarely interfere with planning merits, they are prepared to quash decisions where policy has been misinterpreted. *All eyes will therefore be on the court’s reading of the NPPF.*
Stakeholder Statements
“We believe the Inspector failed to grasp the community’s vision for sustainable growth,” said Cllr Ruth Fletcher, Cabinet Member for Planning and Infrastructure. Southwater Parish Council echoed the sentiment, warning that community confidence in neighbourhood planning is at stake.
The Planning Inspectorate has declined to comment while proceedings are active, and a spokesperson for the Secretary of State said only that the decision was made “in accordance with the law and available evidence.”
Potential Outcomes
- The court upholds the Secretary of State’s approval, allowing construction to proceed.
- The decision is quashed, forcing a fresh determination that could reincorporate the Neighbourhood Plan.
- The matter is remitted for further review, prolonging uncertainty for all parties.
Whichever way the judgement falls, planners across the country will study the reasoning closely, *aware it could recalibrate national and local dynamics for years to come.*
FAQs
What is a judicial review in planning?
It is a legal process where a court examines whether a public body, such as the Secretary of State, has acted lawfully in reaching a planning decision. It does not re-hear planning merits but focuses on legality and procedure.
Could this case delay other housing projects in Horsham?
Yes. Developers and the council may “wait and see” before submitting or determining large applications, especially where neighbourhood plan conformity is disputed.
How often are Secretary of State decisions overturned?
While not common, several high-profile planning permissions have been quashed in recent years when courts found misapplication of policy or procedural unfairness.
When will the court ruling be announced?
A hearing date is expected later this year, with judgement typically handed down within a few months, subject to court timetables.