Self-storage and the limits of Class B8

Class B8 of the Town and Country Planning (Use Classes) Order 1987 as amended covers use for storage or as a distribution centre, and self-storage is treated in practice as falling within it. The limit most operators run into is retail. Selling boxes, tape and padlocks to the customers who rent units is ancillary and stays inside the class. Fitting out a shop that serves passing trade does not, and that is where a conditioned permission starts to bite.

The point about self-storage being B8 rather than a use of its own has been argued occasionally, usually by councils resisting a scheme. Most authorities accept the B8 reading. Do not rely on it where the planning history of the building says something different.

What Class B8 covers

The class description is short and does a lot of work. Storage covers holding goods, whether the goods belong to the occupier or to third parties. Distribution covers receiving, sorting and sending goods on. Both are within the same class, so a building used for one can move to the other without an application.

What the class does not cover is processing. Repackaging, assembling, cutting to size or any activity that changes the goods pushes the use towards Class B2 general industrial or Class E(g)(iii) light industrial, depending on its effects. A unit described as storage that in fact runs a small production line is in the wrong class, and an enforcement officer who visits will say so.

Open land used for storage is also B8. Container yards, timber stacks and vehicle storage are all capable of falling in the class, which matters because the planning history of yards is often unclear.

Self-storage and ancillary retail

Ancillary use is a creature of section 55 of the Town and Country Planning Act 1990 and the case law on it. A use subordinate to the primary use, serving it, is not a separate use needing permission. The test is one of fact and degree: what proportion of floorspace, what turnover, who the customers are and whether the activity could stand alone.

In a self-storage building, sales of packaging to unit holders are plainly ancillary. The difficulties start with:

• A sales area visible and accessible from the street, signed to attract passing customers
• Stock ranges that go beyond what storage customers need
• Online order collection from the reception counter
• Van hire operated as a business in its own right rather than for unit holders

Each of those moves the mix. None of them on its own creates a retail use, and all of them together certainly do.

Trade counters and the retail question

A trade counter in a storage or distribution unit is the classic boundary dispute. Retail sale of goods sits in Class E(a), and a counter selling to the general public is retail whatever the operator calls it. Selling only to account-holding trade customers is a better argument, but it is an argument about fact rather than a rule, and plenty of authorities treat any public-facing counter as retail.

Where counters are permitted, authorities almost always condition them. The usual wording caps the ancillary sales floorspace, and the cap varies between authorities, so take the figure from the decision notice rather than from a scheme elsewhere. Some conditions also restrict the goods that may be sold and prohibit external display.

Employment land policy and B8

Being within Class B8 answers the use class question and leaves the policy question open. Authorities with a shortage of industrial land often apply a policy on the efficient use of employment sites, and self-storage generates fewer jobs per square metre than almost any other B8 operation.

The evidence that answers it is an Employment Land Assessment setting the site against the authority's own published supply figures, plus an honest account of the employment the scheme does create. A Planning Statement that quietly avoids the job density point invites the officer to raise it first, which is a worse position to argue from.

Vehicle movements and servicing

Movement patterns differ sharply within the class. A distribution operation runs articulated deliveries at fixed times. Self-storage runs cars and hire vans at weekends. The highway authority will treat these as different propositions even though the class is the same, and a permission granted for self-storage movements does not carry a right to run a parcel hub from the same building if the use remains B8.

That is why authorities condition the specific use. A Transport Statement should describe the movement profile you actually intend, because the conditions will be drafted from it.

Hours and access control

Self-storage operators want long access hours, often 24 hour access by keypad for existing customers. Councils in residential areas resist it, and the usual compromise is staffed hours for new lettings and extended access hours for existing customers with a condition on vehicle movements after a stated time.

Access control helps the case. Gated entry logging each visit, lighting designed to avoid spill into neighbouring windows, and a management plan dealing with security patrols all make long hours easier to defend. Splitting a larger building between operators changes the analysis again; there is a separate piece on splitting a commercial unit into two.

Conditions restricting ancillary sales

Read the conditions as carefully as the permission. Three wordings recur, and they are not equivalent.

1. A condition restricting the use to self-storage within Class B8, which removes the freedom to move to general storage or distribution later.
2. A condition capping ancillary retail floorspace at a stated area, which is workable if the figure matches the fit-out.
3. A condition prohibiting retail sales other than to unit holders, which is harder to police and harder to comply with if a customer walks in.

A fourth sometimes appears: removal of permitted development rights within the building, which blocks internal alterations you might otherwise make without consent.

Part 3 of Schedule 2 to the General Permitted Development Order 2015 also contains a class permitting change from storage or distribution to dwellinghouses, subject to prior approval, a floorspace cap and date conditions. Those dates matter and the text has been amended, so check the current version before assuming a conversion route exists.

Browse the report types to see which documents a storage or distribution proposal is likely to need.

This is general guidance, not legal advice; check the position with your local planning authority or a qualified professional before relying on it. A lawful development certificate is the only formal way to confirm that an existing or proposed use is lawful. PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval.