Estimated reading time: 6 minutes
Key Takeaways
- The Planning Inspectorate has rejected Horsham District’s draft Local Plan, citing legal and soundness concerns.
- A fresh examination is now required, delaying vital housing and infrastructure projects until at least 2026.
- Key criticisms involve an inadequate Duty to Cooperate approach and the failure of the Sussex North Offsetting Water Strategy to prove water neutrality.
- Local government reorganisation may both hinder and help the revision process.
- Community leaders vow to “leave no stone unturned” in getting a compliant plan approved.
Table of Contents
Background
The Horsham District Local Plan, intended to steer growth from 2023 – 2040, was designed to deliver housing, enhance infrastructure and promote sustainability. Central to the vision was the Sussex North Offsetting Water Strategy (SNOWS), a scheme aimed at achieving water neutrality across the region.
On 4 April 2025, the Planning Inspectorate issued an interim findings letter demanding the plan’s withdrawal under Section 22 of the Planning and Compulsory Purchase Act 2004.
Details of the Rejection
Two headline concerns emerged:
- Legal Compliance – Duty to Cooperate: Inspectors ruled Horsham did not engage sufficiently with neighbouring authorities.
- Soundness: Doubts persisted over delivery of 12,000+ homes while meeting stringent environmental targets.
“Without clear evidence of collaboration, the plan cannot be considered legally compliant,” the inspector wrote.
Council Response
A visibly disappointed Horsham District Council lodged a formal complaint, contacted the Planning and Housing Minister, and demanded a new review. Council Leader Cllr. Jane Mitchell stated, “We remain fully committed to delivering sustainable homes & jobs for our residents.”
Key Issues Highlighted
- Insufficient cross-border dialogue eroded the plan’s legal standing.
- Lack of robust evidence for infrastructure funding and phasing.
- Uncertainty over meeting housing targets in a tight environmental framework.
Water Neutrality Challenge
SNOWS aimed to balance new water demand with offsetting measures; however, inspectors found the evidence “lacked the necessary scientific rigour.” As a result, the plan failed to demonstrate genuine water neutrality, an increasingly critical yardstick for approval in the South East.
Impact of Local Government Reorganisation
The pending abolition of the Duty to Cooperate under national reforms adds extra uncertainty. While some see an opportunity for a streamlined approach, others warn that shifting rules could slow Horsham’s progress even further.
Plan Withdrawal & Housing Provision
Developers and residents now face a vacuum of policy guidance. Immediate consequences include:
- Delays to critical housing sites – some projects may be paused for 12-18 months.
- Potential knock-on effects on affordable housing quotas.
- Greater planning uncertainty for local businesses and investors.
Next Steps
The council must now:
- Prepare a revised evidence base on housing need and environmental impact.
- Launch enhanced engagement with neighbouring districts.
- Deliver a credible water-neutrality strategy backed by scientific data.
Inspectors have urged a rapid turnaround, yet officials acknowledge the process could extend into 2026.
Conclusion
The rejection lays bare the complexities of modern plan-making, where legal compliance, environmental safeguards and community growth must align perfectly. Horsham’s experience offers a cautionary tale for councils nationwide: early collaboration and watertight evidence are no longer optional.
FAQs
What does the rejection mean for current planning applications?
Applications will continue under existing policies, but developers may face additional scrutiny on water usage and environmental impact.
How soon can a new plan be adopted?
Officials estimate 18 – 24 months, assuming no further legal hurdles.
Will housing targets change in the revised plan?
Targets could be recalibrated to reflect updated population data and stricter environmental limits.
Could the Duty to Cooperate be removed before a new plan is ready?
Yes, national reforms are expected in 2025, but inspectors have signalled cooperation will still be expected in spirit.
Where can residents follow updates?
The council’s dedicated Local Plan portal at horsham.gov.uk/planning/local-plan provides regular bulletins.