Cambridge enforcement appeal wins as C1 notice is quashed

A Cambridge enforcement appeal has quashed a notice alleging an unauthorised change from a C3 dwellinghouse to a C1 hotel after the Inspector found that the property was not being used as a hotel or guest house as a matter of fact.

The decision at Arbury Road is a useful enforcement lesson because Cambridge City Council had evidence of six separately bookable rooms, key safes and online advertising under the name “Sun Guest House”. Even so, the Inspector concluded that the actual use did not fall within Use Class C1.

The appeal succeeded on ground (b), meaning the matters alleged in the enforcement notice had not occurred. The Inspector also declined to rewrite the allegation to some other use because the parties disagreed about what that use might be and had not had a fair opportunity to address a different breach.

Why the Cambridge enforcement appeal succeeded on ground (b)

Appeal 3370670 concerned a semi-detached property at 139 Arbury Road, Cambridge. The council’s enforcement notice alleged a material change of use from Use Class C3, dwellinghouses, to Use Class C1, hotels.

The appellant challenged the notice on grounds (a) and (b). Ground (a) seeks planning permission for the matters alleged, while ground (b) argues that those matters have not in fact occurred.

The appellant’s written case did not apparently label the second argument as ground (b), but it asserted that the property was not being used in the way the notice described. The council recognised that point and responded to it. The Inspector therefore treated the appeal as including what is sometimes called a hidden ground (b), finding that no injustice would arise.

Planning Geek’s guide to enforcement notices and appeals explains why the wording of the alleged breach matters. An enforcement appeal is not simply a broad argument about whether the council dislikes a use. The notice has to identify the breach that is said to have occurred.

Calling it “Sun Guest House” was not enough

The council’s case had an obvious starting point. The property was advertised online as “Sun Guest House”. The layout also looked more commercial than an ordinary family dwelling.

There were six separately accessible rooms or units within the building. Guests booked in advance online, used separate key safes and occupied rooms with beds, linen and towels ready for short stays.

However, the Inspector looked beyond the trading name. The decision records that there was no internal reception, no bar or restaurant, no breakfast service and no resident proprietor. There was also no signage telling a passer-by that rooms were available to book.

That combination led to a simple but important conclusion: a name used in online marketing is not synonymous with the planning use of a building.

The Inspector accepted that the property was no longer functioning as a single C3 dwellinghouse, but was not persuaded that it had become a hotel or guest house within C1. That distinction was enough for ground (b) to succeed because the notice alleged a specific C1 use.

Use Class C1 has to match the facts on the ground

Use Class C1 covers hotels, boarding houses and guest houses where no significant element of care is provided. The class label matters, but planning character is still assessed by looking at the real operation.

Here, the rooms had a mixture of self-contained and shared facilities. Some had their own small kitchenette and en-suite shower room, while the property also contained shared facilities including a kitchen, WC, laundry equipment and rear garden.

The Inspector found that guests were using the property as visitor accommodation, rather than as their main residence. That did not automatically answer the next question, which was whether the use fell inside C1.

Planning Geek’s serviced accommodation and short-term let guide makes the same broader point. Short-term visitor occupation can take several planning forms depending on how the accommodation operates. It is unsafe to assume that every short let is a C1 hotel, or that every property booked through an online platform remains C3.

The Court has also considered the planning character of serviced accommodation in cases such as Empire Communications Ltd v Secretary of State [2026] EWHC 817 (Admin). That case was not cited in this appeal decision, but it reinforces the need to identify the actual planning use rather than rely on a marketing label.

The notice could not simply be rewritten as a different use

Once the Inspector found that a C1 change had not occurred, there was an obvious question. Could the enforcement notice be corrected so that it alleged whatever visitor accommodation use was actually taking place?

In some enforcement appeals an Inspector can correct or vary a notice, provided that doing so would not cause injustice.

The Inspector had already made minor corrections to the Cambridge notice. The wording “change of use” was corrected to “material change of use”, and the description of C3 was changed from “residential” to the more accurate “dwellinghouses”. Those changes clarified the existing allegation without changing its substance.

Replacing C1 with some entirely different use would have been another matter. The appellant and council disagreed about the planning character of the operation, and the appeal submissions had been directed at the allegation actually served.

The Inspector concluded that changing the notice to allege a different use could deprive the parties of the opportunity to make proper representations. That would risk injustice, so the notice was not rewritten.

Why the exact allegation matters in enforcement

This is the practical centre of the decision. Enforcement notices are powerful documents, but their strength depends on identifying the breach accurately.

A council may have compelling evidence that a property is no longer being used as a conventional dwelling. That does not necessarily prove the particular alternative use pleaded in the notice.

If the allegation is too narrow, an appellant may succeed by proving that the alleged use has not occurred, even where some other material change of use may have happened. Conversely, an allegation that is so vague that the recipient cannot understand the case they have to meet can create its own legal difficulty.

The decision therefore sits comfortably alongside other Planning Geek reports where enforcement notices have failed because the authority identified the wrong breach. The recent Chesterfield party venue enforcement appeal provides another example of why the allegation must match the development on the ground.

Ground (b) ended the need to consider planning merits

Because the appeal succeeded on ground (b), the Inspector did not need to decide ground (a) or the deemed planning application under section 177(5) of the Town and Country Planning Act 1990.

That is significant. The outcome does not amount to a planning permission for the visitor accommodation use, nor does it formally determine exactly what use the property is in.

It simply means the enforcement notice before the Inspector could not stand because the alleged C3 to C1 change had not been shown to have occurred.

The council is therefore not being told that the current operation is necessarily lawful. The decision is narrower: the specific breach alleged in this notice was wrong on the balance of probabilities.

What applicants and councils should take from the decision

For operators of short-term accommodation, the case is another warning against self-classifying a use from branding alone. A property called a guest house can still have a different planning character, just as a business calling itself serviced apartments does not determine its use class.

For councils, pre-enforcement investigation needs to establish more than how the property is marketed. Booking arrangements, length and pattern of occupation, services provided, on-site management, facilities, physical subdivision, common areas and the relationship between individual rooms can all matter.

For appellants, ground (b) requires disciplined evidence. The question is not whether the council has chosen the best policy argument, but whether the matters stated in the notice have actually occurred. Here, the appellant accepted that C3 had ceased, yet still succeeded because C1 had not been proved.

The full decision can be checked through AppealBase decision 3370670 and the Planning Inspectorate case record.

Planning Geek view

The most useful line from this appeal is not about hotels. It is about precision.

The council had identified a real planning issue and had evidence of intensive visitor accommodation. But an enforcement notice is judged by what it actually alleges. Once the Inspector rejected the C1 label, the notice could not safely be transformed into a different case without giving the parties another opportunity to address it.

That makes this a good example for both sides of enforcement practice. Authorities need to investigate the planning unit and use before settling the allegation. Owners and advisers need to test every word of the notice against the facts, rather than assuming that a broadly correct description will survive an appeal.

In short, “guest house” on a booking website was evidence, but it was not the planning answer.