A York Green Belt appeal has allowed existing farm buildings at Hall Farm, Strensall Road, to become two self-storage units and a rentable office. The Inspector issued the decision on 16th October 2026 after City of York Council refused application 25/02164/FUL.
The key question was not whether storage is automatically acceptable in the Green Belt. It was whether these existing buildings were permanent and substantial enough to be reused without major reconstruction, and whether the new activity would preserve openness.
I think the York Green Belt decision is a useful example of how the physical condition of a rural building and the operational details of its new use must be examined together. A change of use can affect openness even where the walls and roof do not become larger.
What the York Green Belt proposal involved
Hall Farm contains a mixture of equestrian, cattery and residential caravan uses. The appeal building stands within the main farmyard, among other buildings reached by a long, narrow access track.
The proposal converts two stable areas into storage or distribution space measuring about 80.1 square metres. A further 31.1 square metres in an outbuilding and store would become rentable office accommodation.
Some openings would be altered or created. Timber boarding with small ventilation gaps would be replaced by similar timber, while insulated stud walls, ceilings and floors would be installed inside.
City of York Council argued that the work was effectively comparable to creating a new building because the existing structure was not permanent or substantial and was not properly weatherproof. That would have made the development inappropriate unless another policy route or very special circumstances justified it.
Why the building counted as permanent and substantial
The Inspector described the building as a modern, timber-clad structure with a solid metal frame. Its simple, functional appearance was consistent with contemporary farm buildings.
On the site visit, the building was not found to be dilapidated. The decision recorded that there was nothing to show it was not weatherproof and concluded that it did not have a temporary or fleeting character.
The proposed internal work would create better sealed storage units, but the Inspector found that the structural alterations and rebuilding would be limited. The building could accommodate the use without the major reconstruction that might take the proposal outside the policy exception.
The York appeal decision concluded that the work could “reasonably be described as minor alterations or improvements”. That finding was central to the result.
York Green Belt openness included activity as well as buildings
The proposed use stays within the existing envelope and creates no additional floorspace. That meant there was no direct spatial loss of openness from a larger building.
The York Green Belt assessment still had to consider the operational effects. Tall openings indicated that light goods vehicles could collect or deliver parcels or bulky items, while the office could create additional traffic and parking.
Those movements were expected to be infrequent and short-lived because the storage and office areas are modest. There would be no outside operations, extra hardstanding, external plant or ancillary buildings.
Against the farm’s mixed-use context, the Inspector concluded that the low-key activity would preserve openness and would not undermine the purposes of the Green Belt.
The policy exception was decisive
The National Planning Policy Framework published in August 2026 retains an exception for the reuse or alteration of a building that is of permanent and substantial construction, provided the development preserves Green Belt openness and does not conflict with Green Belt purposes.
The York Green Belt proposal met that route. It was therefore not inappropriate development, and the Inspector did not need to move on to a balancing exercise about very special circumstances.
That sequence matters. Very special circumstances are not a universal starting point for every Green Belt proposal. The first task is to classify the development accurately against the relevant policy exceptions.
York’s Local Plan policy GB1 was treated as broadly consistent with the national framework for this purpose. The August changes had not fundamentally altered the relevant control of development, so further consultation with the appeal parties was unnecessary.
Rural character was also preserved
Hall Farm is surrounded by rolling countryside, but the appeal buildings are within an established farm complex. They are not visible from public viewpoints, although the group can be seen from the access track.
The external alterations retain the host building’s utilitarian character. Combined with the limited activity, their visual effect was not judged harmful to the surrounding rural area.
The Inspector therefore found compliance with both Green Belt and design policies. Only a commencement condition and a condition identifying the approved plans were considered necessary.
What the York Green Belt appeal does not establish
The outcome is fact-specific. A flimsy, ruinous or temporary structure may not qualify as a permanent and substantial building. A proposal requiring extensive rebuilding, enlargement, outdoor storage or frequent heavy vehicle movements could also produce a different result.
Nor does the decision turn every agricultural or equestrian building into a ready-made commercial unit. The lawful existing use, the condition of the building, access, traffic, neighbouring amenity and any planning conditions all remain relevant.
I would therefore treat the York Green Belt appeal as an evidence checklist, not a shortcut. Applicants need clear surveys and drawings showing what exists, what work is actually required and how the new operation will function.
The York Green Belt decision succeeds because the building, works and activity were all modest enough to fit the reuse exception. If any one of those elements had been materially different, the Green Belt analysis could have changed with it.
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