Planning permission for a community garden or allotments

Cultivating land as a community garden or allotment site often needs no planning permission at all, because section 55(2)(e) of the Town and Country Planning Act 1990 takes the use of land for agriculture out of the definition of development, and section 336 defines agriculture to include horticulture and the growing of fruit and vegetables. What does need permission is almost everything you build around the growing. Allotment site planning permission questions are therefore rarely about the beds and nearly always about the shed, the car park, the fence and the access.

Whether a change of use arises at all

Start with the existing lawful use. A field already in agricultural use that becomes allotments has not changed use in planning terms, because both fall within agriculture. A scrap of amenity grassland in a housing estate, a former car park or a closed pub garden is a different matter, and the council may well take the view that a material change of use has occurred.

The honest answer is that this turns on facts and on the intensity of what is proposed. Twenty plots with a parking area and a communal building look like a distinct use. Six raised beds maintained by neighbours on a verge usually do not.

Where the answer matters, apply for a certificate of lawfulness under section 192 of the 1990 Act for the proposed use. It is the only formal route to confirm that something is lawful, and it costs a fraction of a refused full application. A Planning Statement setting out the existing use, the proposed intensity and the statutory argument is what carries that application.

Structures, sheds and polytunnels

This is where permission bites. Permitted development rights for agricultural buildings under Part 6 of Schedule 2 to the GPDO 2015 are tied to the size of the agricultural unit. Class A requires a unit of five hectares or more. Class B covers units of at least 0.4 hectares but less than five, and its rights are narrow, extending to works on existing buildings rather than new ones.

Most allotment sites are well under 0.4 hectares, so Part 6 gives them nothing. Every shed, store, greenhouse, polytunnel and communal cabin is then development requiring permission, unless it is so small and incidental that it does not amount to a building operation.

Polytunnels deserve their own thought. They are large, they are visible, they reflect light, and in open countryside or a conservation area they attract objections out of proportion to their cost. Treat them as a design issue: group them, set them back from boundaries, and show them on the plans rather than adding them later.

Councils commonly condition the number, size and position of structures. A site layout plan that allocates a defined shed zone per plot is far easier to approve than an open-ended permission for sheds as required.

Access, parking and highway safety

Allotment traffic is low but peaky. Weekend mornings, spring planting, autumn clearance. The highway authority will look at the visibility splay at the access, the width of the entrance and whether vehicles can turn within the site rather than reversing onto the road.

For a small site a Transport Statement is usually enough, and often nothing formal is needed at all. What is needed is a drawn access with dimensions and visibility, and a parking layout that includes space for a delivery of manure or woodchip without blocking the entrance.

Where the site is intended to be reached mainly on foot, say so and show the footway connections. A scheme that argues for low parking provision needs the walking catchment evidence to back it.

Deliveries are the part that gets missed. A bulk delivery of compost arrives on a tipper, and if there is nowhere for it to stand the driver blocks the lane. Show a hardstanding large enough for one delivery vehicle and mark the turning area, even on a site of a dozen plots.

Contamination on land that was something else before

This is the point most community groups underestimate. Allotments are the most sensitive land use there is from a contamination perspective, because people grow food, handle soil and bring children onto the site.

Where the land was previously developed, the council will expect a Phase 1 desk study, and frequently Phase 2 intrusive sampling, with soil results assessed against criteria for residential use with home-grown produce. That work has to be done by a suitably qualified and experienced person in accordance with BS 10175. A Land Contamination Phase 1 assessment drafted in PlanScope gives the group a structured starting point, but the sampling, the interpretation and the remediation strategy are the consultant's responsibility, not the software's.

Made ground, ash, clinker, old orchard soils with pesticide residues and lead from historic paint or traffic are the usual findings. The practical answer is often raised beds with imported certified topsoil over a marker layer, which costs far less than excavation and is easier to condition.

Water, drainage and the services nobody budgets for

A site with no water is a site that fails in its second summer. Standpipes, troughs and rainwater harvesting from shed and store roofs all need showing on the layout, and a mains connection needs an agreement with the water undertaker.

Foul drainage matters as soon as a toilet is proposed. On a site with no sewer, that means a package treatment plant or a composting toilet, and the first of those brings the general binding rules for small sewage discharges into play.

Hard surfacing for parking and paths adds run-off. On anything beyond a handful of spaces, permeable surfacing and a simple drainage note will save an objection from the lead local flood authority.

Boundaries, security and what the design officer sees

Close-boarded fencing and palisade read as industrial and are routinely resisted in sensitive locations. Hedging with a mesh backing gives the same security and satisfies the landscape officer, and it counts towards biodiversity rather than against it.

Gates, height, lighting and any CCTV all belong in the Design and Access Statement with a short justification. Lighting in particular needs care near hedgerows and watercourses, because bats commute along them.

Conditions, management and the long term

Expect conditions on structure numbers and sizes, on hours of use, on the retention of boundary planting and on a management plan. Some councils also restrict trading, because selling produce commercially can take the use outside horticulture and into retail.

A written management arrangement helps. Who allocates plots, who maintains the shared areas, what happens to a plot left uncultivated for a season. Councils are more comfortable granting permission where a constituted group with a tenancy agreement stands behind the application.

Bonfires and composting are worth addressing before a neighbour raises them. Smoke is a statutory nuisance issue rather than a planning one, but an environmental health objection at consultation stage still lands on the case officer's desk. A short site rule on burning, and a designated composting area set back from boundaries, closes that off in a paragraph.

One caution for sites on council-owned land. Statutory allotments held by a local authority are protected, and disposing of them or changing their use requires consent from the Secretary of State under the Allotments Act 1925. That is a separate process from planning permission and it takes time.

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.