A farm diversification scheme across three applications
An illustrative walkthrough of a diversification programme delivered through three applications, showing how sequencing built the highways evidence base.
Farm diversification planning applications work better in sequence than in one bundle. The holding described below is illustrative, assembled from the pattern that recurs on mixed arable and livestock farms in lowland England, and the useful part is the order the three applications went in and why. The first was deliberately small. The third, which was the one the family actually cared about, would probably have been refused if it had gone first.
The holding runs to about 90 hectares with a farmstead of a modern portal-frame building, a large Dutch barn, a range of stone and brick buildings around a yard, and a single access onto a C-class road.
The holding and the business plan
The business had three problems: a variable arable margin, two buildings no longer suited to modern machinery, and a family member returning to the farm who needed an income from it.
The plan that came out of that was a redundant barn let as storage units, a farm shop and small café in the stone range, and three holiday lets in the remaining buildings. All three depended on the same access, which turned out to be the binding constraint on everything.
The first thing the agent did was establish which parts needed permission at all.
Which parts needed permission and which did not
Three answers, and the middle one is where people get caught.
Storage use of the Dutch barn fell within Class R of Part 3 of the GPDO 2015, which permits the change of use of an agricultural building to a flexible commercial use including storage and distribution, up to a cumulative 500 m² on the unit. Prior approval from the local planning authority is needed where the cumulative floor space exceeds 150 m², covering transport and highways, noise, contamination and flood risk. That is a prior approval application, not a full one, and the range of matters the authority can consider is limited to those listed.
The farm shop needed more thought. Selling produce grown on the holding from a building on the holding can be ancillary to the agricultural use and outside planning control. Selling bought-in goods, running a café with seating, and attracting customers who arrive by car, is a material change of use to a retail and food use in Class E. The family wanted the second thing, so they applied for it.
The holiday lets needed full permission for change of use plus listed building consent for two of the buildings, and that is where the real work sat.
The first application and why it was scoped narrowly
The Class R prior approval for the Dutch barn went in alone, with nothing else mentioned beyond the storage use itself.
Two reasons. The prior approval regime limits what the authority can assess, so a narrow application meets a narrow test. And a modest first application establishes a track record on the access without asking the highway authority to assess a farm shop, a café and three holiday lets at the same time.
It also produced the traffic evidence for everything that followed. The storage units generated a small number of daily van movements, the highway authority raised no objection subject to a passing bay and visibility improvement, and that improvement was built before the second application was submitted. When the farm shop came forward, the access had already been upgraded and the highway authority had already accepted the geometry.
Scoping narrowly is not the same as concealing. The Planning Statement for the second application described the wider diversification plan openly, because an authority that discovers a phased strategy late reads it as salami-slicing and hardens.
Highways evidence for the access
The access was the part that carried the cost. A single field access onto a road with a 60mph limit, hedges on both sides and visibility in one direction of well under what the highway authority wanted.
The Transport Statement for the farm shop application did four things. It surveyed existing traffic on the road over a neutral week, avoiding August and school holidays. It estimated trip generation for the shop and café from published trip rate data for comparable rural units, with the assumptions stated. It set out the visibility splay achievable after hedge removal and a bank cut back, with the land all in the applicant's ownership. And it assessed the combined effect of the storage units, the shop and the future holiday lets, so that the cumulative position was on the table from the start.
Hedge removal is its own consent question where a hedgerow is protected, and the ecology work needed to be done in the right season. The family lost a planting season by finding that out late.
Sequencing the three applications
The order was storage, then shop and café, then holiday lets, over about 26 months.
| Stage | Application type | What it established |
|---|---|---|
| First | Class R prior approval, storage | Access acceptable for light commercial traffic |
| Second | Full, change of use to shop and café | Retail and food use accepted, access upgraded |
| Third | Full plus listed building consent, three holiday lets | Tourism use accepted, conditions tying use to holding |
The logic of that order is about evidence rather than tactics. Each application carried a slightly larger traffic figure than the last, with the previous permission and the completed access works as the baseline. The alternative, a single application for the whole programme, would have put the entire trip generation, the entire heritage case and the entire drainage question in front of the authority at once, with no completed works to point at.
The trade-off is time and fees. Three applications cost three fees, three sets of drawings and three determination periods, and the family funded the first two phases from farm income while the third was in preparation. Read the stables and manege in the Green Belt walkthrough for a case where a single application was the better choice, because the policy test was the same for every element.
Conditions tying the uses to the holding
This is the part rural owners underestimate. Permissions for diversification uses are routinely conditioned to stop them becoming independent businesses detached from the farm.
The conditions imposed here were specific. The farm shop was restricted to a stated maximum retail floor area, with a requirement that a stated proportion of goods sold be produced on the holding or within a defined local area. The café seating was capped. The holiday lets were restricted to holiday occupation with a maximum continuous occupancy period and a requirement to keep a register of occupiers available for inspection. And a condition prevented the holiday units from being disposed of separately from the farmhouse and land.
Read each of those before agreeing to them, because two of them constrain the business permanently. A percentage-of-local-produce condition sounds reasonable in a committee report and is difficult to evidence year after year. A condition preventing separate disposal reduces the value of the units as security for lending, which matters if you intend to borrow against them.
Where a condition is unworkable, negotiate the wording before the decision is issued. Afterwards it takes a section 73 application.
The position some years on
Storage units let quickly and the income was steady and dull, which is what the business needed. The shop and café took longer to establish than projected and became the main employer on the holding. The holiday lets performed well in season and required more management than anyone expected.
Two things the family would do differently. They would have commissioned the ecology and hedgerow work at the start rather than at the point the highway authority asked for visibility, because the survey season dictated a delay nobody had programmed. And they would have applied for a larger retail floor area at the second stage, because increasing it later meant another application and another round of highway assessment.
The pattern where a change of use looks simple and the conditions do the real work also runs through our note on a shop becoming a children's nursery.
Browse all 66 PlanScope report types to see which documents a diversification application usually needs and start a draft from the report index.
This is general guidance, not legal advice. Check the position with your local planning authority or a qualified professional before relying on it. PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval.
Frequently asked questions
Does a farm shop need planning permission?
It depends what it sells. Selling produce grown on the holding from a building on the holding can be ancillary to the agricultural use and outside planning control. Selling bought-in goods, adding café seating and attracting customers arriving by car amounts to a material change of use to a retail and food use, which needs permission.
What does Class R of Part 3 allow?
The change of use of an agricultural building to a flexible commercial use, including storage and distribution, business and service uses, up to a cumulative 500 square metres on the unit. Prior approval is needed where cumulative floor space exceeds 150 square metres, limited to transport and highways, noise, contamination and flood risk.
Is it better to submit one application or several?
It depends on whether the policy test is the same for every element. Separate applications let each one build on completed works and an accepted baseline, which helps where access capacity is the constraint. A single application is better where all the elements face the same policy test, because splitting them repeats the same argument three times.
Why do councils tie diversification uses to the farm?
To stop a use justified by rural diversification becoming an independent business unconnected to the holding. Typical conditions cap retail floor area or café covers, require a proportion of goods to be produced on the holding, restrict holiday units to holiday occupation with a register of occupiers, and prevent separate disposal from the farm.
Can a condition tying units to the farm be removed later?
Only by a section 73 application to vary or remove it, which is a fresh planning decision the authority can refuse. Negotiate the wording before the decision notice is issued, particularly where a condition would limit borrowing against the units or require evidence you cannot realistically produce year after year.
Sources and further reading
This article is general guidance about the planning system in England and, where stated, the rest of the UK. It is not legal or professional advice. Check your local planning authority’s validation requirements and take professional advice for your specific site.