Enforcement appeal ground (a) and the deemed application

Ground (a) of an enforcement notice appeal argues that planning permission ought to be granted for what has been built or done. It is set out in section 174(2)(a) of the Town and Country Planning Act 1990, and under section 177(5) an appeal on that ground is treated as an application for planning permission, which is why a fee is payable and why the inspector ends up deciding the planning merits.

It is the only ground that can leave you with a permission rather than simply a quashed notice. It is also the only one that costs money to run, and the only one that concedes there is something to permit.

What ground (a) actually argues

The other grounds are defensive. Ground (b) says the matters alleged have not occurred. Ground (c) says that what occurred does not constitute a breach of planning control. Ground (d) says the time for enforcement had expired. Grounds (e), (f) and (g) attack service, the steps required and the compliance period.

Ground (a) is different in kind. It accepts, for the purposes of that ground, that there is development requiring permission, and asks the inspector to grant it.

If it succeeds, the inspector grants planning permission for the development, and the enforcement notice falls away. You are left holding a consent. No other ground produces that result.

If it fails and every other ground fails too, the notice is upheld and the compliance period starts running from the decision, subject to any variation the inspector makes under ground (g).

The deemed application and its fee

Section 177(5) deems the ground (a) appeal to be an application for planning permission for the development alleged in the notice. That has three consequences.

A fee is payable, set by the fees regulations at a multiple of the fee that would have been payable on an ordinary application for the same development. Check the current figure before you file, because the regulations are amended and the fees are indexed.

The fee has a deadline. It must be paid within the period the Planning Inspectorate specifies, and a ground (a) appeal without the fee is treated as withdrawn on that ground. This is the single most common way ground (a) is lost, and it is lost administratively rather than on the merits.

The development that is deemed to be applied for is the development described in the enforcement notice, not the development you would have preferred to apply for. If the notice describes the breach imprecisely, you are arguing for permission for that imprecise description. Read the allegation carefully and consider whether ground (f) or a correction is the better route.

Running ground (a) alongside other grounds

Grounds can be run together and usually are. The inspector considers them in a logical order, normally taking the grounds that would dispose of the notice before reaching the merits.

Running (a) with (d) is entirely normal: the primary case is that the breach is immune, and the fallback is that permission should be granted anyway.

Running (a) with (b) reads badly. Saying it did not happen and, if it did, please permit it, invites the inspector to notice that you know perfectly well what happened.

Where ground (a) undermines ground (c)

Ground (c) is the interesting one, because it is run with ground (a) constantly and there is a real tension.

Ground (c) says the activity is not a breach: it is not development at all under section 55, or it is permitted development, or it falls within the same use class. Ground (a) says that if it is a breach, permission should be granted.

Logically the two sit fine as primary and alternative cases. Presentationally they pull against each other, because the evidence for ground (c) tends to minimise what has happened while the evidence for ground (a) has to describe it fully and argue it is acceptable.

The way to run both is to keep them in separate sections with separate evidence, and to say plainly that ground (a) is advanced in the alternative. Do not let the ground (c) description of the works appear in the ground (a) planning case, where it will look like an attempt to understate the development.

One further point. Section 174 has been amended more than once, including provisions restricting ground (a) where a related planning application was before the authority when the notice was issued. Check the current text of the section before assuming the ground is available.

Evidence the inspector expects on merits

The deemed application is a planning application, so the evidence is the evidence you would have submitted had you applied properly.

That means a planning statement addressing the development plan and the material considerations, drawings showing what exists rather than what was once proposed, and whatever technical evidence the issue requires. A noise assessment where the breach is a use generating noise. Highway evidence where it is parking or access. Amenity analysis where it is a structure affecting neighbours.

Two things applicants under-invest in. Accurate as-built drawings, measured on site, because the inspector will visit and will compare. And a straightforward account of the planning history, including any earlier refusal, since the council will put it in their statement anyway.

The council's own case arrives through the appeal questionnaire and statement, which is worth reading closely, as our note on the appeal questionnaire and the council's statement explains. Where there are earlier decisions on similar matters, using appeal decisions as evidence applies here as it does to an ordinary application.

Conditions granted on a successful ground (a)

A grant under section 177 is a grant of planning permission and can be conditional.

Inspectors regularly grant permission subject to conditions that address the harm they have identified: restricting hours, limiting the number of occupants or vehicles, requiring screening or planting, requiring acoustic mitigation, or limiting the permission to a period of years.

That means you should propose conditions. An appellant who offers a workable set of conditions addressing each of the council's reasons gives the inspector a way to allow the appeal. An appellant who argues there is no harm at all, and offers nothing, leaves them with a binary choice.

A temporary permission is worth thinking about where the harm is genuine but the case for permanent refusal is weak. It is a common outcome on residential occupation and on business uses in the countryside.

Permission granted under section 177 relates to the development described in the notice, so check afterwards that the permission covers everything on the ground. Work outside its scope remains unauthorised.

Deciding whether to include it

Four questions to work through before adding ground (a).

1. Is there a realistic planning case. If the development plan is clearly against it and no material consideration helps, the fee buys you nothing.
2. Does running it damage your stronger ground. Where ground (d) immunity is strong and the evidence for it is a detailed chronology, adding a merits case rarely harms it, but where ground (b) is your case, ground (a) undercuts it.
3. Can you fund the fee and the evidence. The deemed application fee plus a proper planning statement and any technical work is a real cost, and it has to be weighed against demolition or cessation.
4. What do you want at the end. If the objective is to keep the development permanently, ground (a) is the only route. If the objective is time to wind an operation down, ground (g) may be enough.

Where the notice follows a refusal, start by re-reading the reasons, as our note on reading reasons for refusal before you decide to appeal sets out, since the same reasons will reappear in the council's enforcement case. Drafting the merits case as a full planning statement rather than a letter is what distinguishes the appeals that succeed.

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.