Use Classes and Change of Use

Waste transfer, scrapyards and open storage of materials

7 min readBy PlanScope Editorial Team

Scrapyards and minerals yards are excluded from every use class, while non-hazardous waste transfer has no settled home. What that means for the description of development, the permit interface and the evidence base.

A scrapyard has no use class. Article 3(6) of the Use Classes Order 1987 expressly excludes a scrapyard, a yard for the storage or distribution of minerals and a yard for the breaking of motor vehicles from every class, which makes each of them sui generis. The waste transfer station use class question is less tidy, because non-hazardous transfer is not named in that list, so the answer depends on what actually happens on the site rather than on the label in the application form.

Describe the use precisely and you keep control of it. Describe it as B8 storage and let the council disagree later, and you inherit an enforcement argument.

Why waste and scrap uses sit outside the classes

Article 3(6) lists the uses that belong to no class. Scrap yards sit there alongside petrol filling stations, hot food takeaways and waste disposal installations for the incineration, chemical treatment or landfill of hazardous waste.

The consequence is that there is no permitted change into or out of these uses, no flexibility of the kind that operates inside Class E, and no fallback argument based on a similar use. Every change needs planning permission, and the permission will describe the use in words rather than by class.

For non-hazardous waste transfer the position is unsettled. Sorting, baling and bulking could be characterised as general industrial use within Class B2 where processing dominates, or as storage and distribution within Class B8 where the material passes through unchanged. Many authorities treat a transfer station as sui generis because the activity does not sit comfortably in either. The practical reading of where modern uses fall in the Order is set out in where new uses land in the Order, and the same logic applies here.

Two drafting consequences follow. First, write the description of development to match the operation: tonnage, waste streams, whether material is processed, hours and vehicle numbers. Second, do not assume the B2 to B8 route helps you, because the permitted change between general industrial and storage does not reach a sui generis use at either end.

Open storage as a use of land

Open storage is a use of land in its own right. It does not need a building, and the absence of a building does not make it exempt.

Three situations come up repeatedly.

A yard with an established B8 use storing pallets outdoors is usually within its lawful use, provided the open storage was part of that use historically. A B2 factory that starts stacking material on an adjoining field has extended the planning unit onto land with a different lawful use, which is development. And a site whose lawful use is open storage of building materials does not thereby have permission to store scrap metal, because the character of the use has changed.

Intensification is the hardest version of the argument. More of the same does not automatically amount to a material change. A step change in the scale, the hours, the vehicle movements and the stack heights can. Officers test it against the description on the last permission and against any conditions limiting throughput.

Scenario Usual planning position
Outdoor storage incidental to an existing lawful B8 use Within the existing use
Storage extended onto adjoining land in agricultural use Material change of use
Switch from timber storage to vehicle dismantling Material change to a sui generis use
Doubling throughput within the same site and hours Depends on whether character has changed

Environmental permits and their relationship to planning

A waste transfer station or a scrap site needs an environmental permit under the Environmental Permitting (England and Wales) Regulations 2016, or needs to register an exemption where the activity is small enough to qualify.

The two regimes are separate and both are needed. National policy expects the planning system to focus on whether the development is an acceptable use of land, and to leave the control of emissions and processes to the pollution control regime rather than duplicating it. In practice that line gets blurred, and applicants should use it: a condition that replicates a permit requirement is open to challenge as unnecessary.

What the planning authority legitimately controls is land use, siting, layout, hours, access, vehicle movements, screening, stack heights and the amenity effects of the operation as a whole.

One procedural point that catches new entrants. In two-tier areas, waste development is determined by the county council as waste planning authority, not by the district. Submitting to the wrong authority costs weeks.

Fire prevention is where the two regimes meet most visibly. The Environment Agency expects a fire prevention plan for combustible waste storage, with pile sizes, separation distances and quarantine areas, and those requirements shape the site layout you submit for planning. Design the layout once, to satisfy both.

Noise, dust and vehicle movements

These three objections decide most applications near housing.

Noise comes from plant, from metal handling and from reversing alarms, and the character of the sound matters as much as its level. Impulsive noise from dropping steel into a skip is penalised in assessment, and a baseline survey followed by a prediction at the nearest dwellings is the expected evidence. An acoustician should prepare it, and councils expect a suitably qualified author.

Dust is about fugitive emissions rather than stack emissions: material handling, crushing, haul roads and stockpiles. The usual mitigation set is surfacing, wheel washing, damping, enclosure of the dustiest operations and a limit on drop heights. Air quality assessment at this scale follows institute guidance on fugitive dust, and the output is a mitigation schedule rather than a modelled concentration.

Vehicle movements need honest numbers. Two-way HGV movements at peak, the routeing to the strategic network, the internal circulation with a swept path for the largest vehicle, and the queuing length ahead of the weighbridge. A Transport Assessment prepared by a transport planner is normal for a waste facility, and the detector thresholds PlanScope uses will usually flag one, though the council's own validation list and local policy take precedence.

Surface water, interceptors and contamination

Waste and scrap sites handle liquids whether or not anyone intends to.

Expect to show an impermeable surface with sealed drainage over the operational area, oil interceptors sized for the catchment, a sealed sump arrangement for any depollution activity, and separation of clean roof water from potentially contaminated yard water. A site treating end-of-life vehicles has specific requirements for impermeable surfacing and spillage collection under the end-of-life vehicles regime.

Groundwater vulnerability changes the answer. In a source protection zone, infiltration drainage is normally unacceptable for a yard surface, and the Environment Agency will say so as a consultee.

For existing land, a Phase 1 desk study identifies the plausible contaminant linkages and decides whether intrusive investigation is needed. Land contamination work is a field where a suitably qualified and experienced professional is required, with investigation carried out in accordance with BS 10175, so treat a contaminated land assessment draft as the starting point for that professional rather than as the finished report.

Hours, stack heights and screening

Conditions on a waste or scrap permission cluster around four controls.

  1. Hours of operation, typically differentiated between weekdays, Saturdays and Sundays, and often separating deliveries from processing.
  2. Maximum stack or stockpile heights, measured against a datum and usually set by reference to the screening.
  3. The screening itself: bunds, acoustic fencing, landscape planting with an establishment period, and gates that stay closed.
  4. Throughput caps, expressed in tonnes per annum, which the council uses as the proxy for everything it cannot otherwise control.

Stack height and screening have to be designed together. A 4 metre acoustic fence is worth nothing if baled material is stacked to 6 metres behind it, and an inspector will say so.

Negotiate throughput caps with evidence from the business plan. A cap set too low is a return trip to the council within two years.

Evidence a permanent application requires

A workable submission for a waste transfer or scrap use near any sensitive receptor usually includes a planning statement dealing with the use class position and waste policy, a noise assessment, an air quality and dust assessment, a Phase 1 contamination desk study, a surface water drainage strategy with interceptor design, a transport assessment, a landscape and visual appraisal, an external lighting scheme and a Waste Management Strategy covering the waste hierarchy and onward routeing.

Start from the waste planning authority's validation list, then build the layout so that the planning drawings and the fire prevention plan agree with each other. To see which of the 66 report types a site like this is likely to need, enter your postcode on PlanScope and work through the guided questions.

This is general guidance, not legal advice. Check the position with your local planning authority or a qualified professional before relying on it. For specialist technical reports, qualified professional input may be required, and land contamination investigation must be carried out by suitably qualified and experienced persons. PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval.

Frequently asked questions

Is a scrapyard a B2 use?

No. Article 3(6) of the Use Classes Order 1987 expressly excludes a scrapyard, a yard for the storage or distribution of minerals and a yard for the breaking of motor vehicles from every class, so each is sui generis. That means no permitted change into or out of the use, and every change requires a planning application.

Which use class covers a waste transfer station?

There is no settled answer for non-hazardous transfer, because it is not named in article 3(6). Where processing dominates, Class B2 may fit. Where material passes through unchanged, Class B8 is arguable. Many authorities treat transfer stations as sui generis, so describe the operation precisely in the application rather than relying on a class.

Does open storage need planning permission?

It depends on the lawful use of the land. Outdoor storage that formed part of an established storage use is normally within it. Extending storage onto adjoining land with a different lawful use is development, and switching the stored material so that the character of the use changes is also a material change of use.

Does an environmental permit remove the need for planning permission?

No. The two regimes are separate and both are required. National policy expects planning to address whether the use of land is acceptable and to leave emissions and process control to the permitting regime. A planning condition that duplicates a permit requirement is open to challenge as unnecessary.

Who determines a waste planning application?

In two-tier areas the county council acts as waste planning authority and determines waste development, not the district council. Unitary authorities deal with both. Submitting to the wrong authority wastes weeks, so confirm which body holds the waste function before you prepare the application.

What drainage provision will the Environment Agency expect?

An impermeable operational surface with sealed drainage, oil interceptors sized for the catchment, separation of clean roof water from yard water and a sump arrangement where depollution takes place. In a source protection zone, infiltration drainage for a yard surface is normally unacceptable, and the Agency will object as a consultee.

Sources and further reading

use classessui generiswastescrapyardopen storageenvironmental permitting

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.

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