Digger on a Grey Belt site
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Government Updates Planning Guidance on Green Belt, Paving the Way for Grey Belt Development

Category
Planner Insight
Policy & Legislation
Date
11 March 2025
Author Ryan Snow
Associate
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The Government has updated planning guidance, paving the way for Grey Belt development within the Green Belt. New guidance helps identify Grey Belt land, assess development potential, and remove barriers for village-adjacent sites. These changes create new opportunities for landowners and developers.

In a significant move for the planning and development sector, the Government has updated the Green Belt section of the Planning Practice Guidance (PPG) to provide clarity on the assessment and development of Grey Belt land. This update, released on 27th February 2025, offers crucial guidance on how to evaluate the contributions land makes to the purposes of the Green Belt, consider whether sites constitute Grey Belt land, and assess the sustainability of potential development locations.

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Key Changes to the PPG

The updated guidance follows changes to the National Planning Policy Framework (NPPF) in December 2024, which includes, among other things, an additional allowance for Green Belt development to be considered “not inappropriate” if it utilises Grey Belt land and meets other criteria.

The new PPG clarifications include:
• Criteria for assessing how Green Belt land contributes to Green Belt purposes, aiding the identification of Grey Belt land.
• Guidance for evaluation development proposals on Grey Belt sites.
• Direction on selecting sustainable locations for Green Belt land release or development.
• Updated methodology for considering the impact of development on Green Belt openness.

 

Implications for Development in Villages
One of the most critical updates within the PPG is the explicit clarification that villages should not be classified as large built-up areas when assessing a site’s contribution to Green Belt purposes. This distinction is crucial as it removes a common barrier imposed by Local Planning Authorities when considering developments on the outskirts of villages within the Green Belt.

This change helps to eliminate resistance to development by confirming that:
• The Green Belt purpose of preventing town coalescence does not apply to villages.
• The Green Belt purpose of preserving the setting and special character of historic towns does not extend to villages.

Opportunities for Developers and Landowners
These updates provide a stronger foundation for demonstrating that certain sites contribute little or nothing to Green Belt purposes and should be reclassified as Grey Belt. Such sites, when meeting other NPPF tests, can now be deemed suitable for development without being considered inappropriate.

Our clients are already taking advantage of these policy shifts, with several Grey Belt sites progressing through various stages of the planning process. In fact, we recently secured a successful appeal based on these new interpretations for a Southwest Surrey scheme.

Expert Guidance Every Step of the Way

The Bell Cornwell team provides tailored advice to landowners and developers looking to explore opportunities on Green Belt land. If this is something you’re considering, now is the time to act. Please get in touch with our team for expert advice on how these policy updates could impact your site’s potential.

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About the author

Ryan Snow joined Bell Cornwell in January 2023 and is an Associate based in our Hampshire office. Ryan provides clients with guidance on all stages of the planning process, from initial appraisals and strategy discussions, through to managing applications and appearing at Public Inquiries. Much of his work has been within the Home Counties and often involves the Green Belt, National Landscapes or isolated locations, where a more strategic, phased approach is required to maximise the development potential of a site.

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