Enforcement appeal grounds: how to choose and prove them

 

A council has served an enforcement notice on you and you have decided to fight it. The next question is a narrow one: on what basis?

You cannot simply say the notice is unfair. An enforcement appeal only works if your case fits one or more of the grounds listed in section 174 of the Town and Country Planning Act 1990. There are seven of them, lettered (a) to (g), and each one asks you to prove something completely different. Choose badly and you can lose an appeal you should have won.

There are also special additional grounds where the breach concerns relevant demolition of a building in a conservation area in England. They sit separately in section 174(2C), rather than forming an eighth lettered ground, and are covered further down this page.

This page is about the enforcement appeal grounds themselves: what each one means, what you have to show, and what you actually win if it succeeds. The notice, the effective date and the deadline for lodging the appeal are covered on our page about enforcement notices and how to appeal. Read that first if a notice has just landed, because that deadline cannot be extended and nothing here matters if you miss it.

Whilst we are happy to give you some help via this page, it is often easier to consult a professional. If in doubt – STOP – and reach out to us. We are here to help. Contact us here. 

 

The seven enforcement appeal grounds

 

Here they are in plain terms. You can run as many as you like at the same time, and most appeals run several:

• Ground (a): permission ought to be granted for what you have done, or the condition ought to be lifted
• Ground (b): the things the notice describes did not happen
• Ground (c): they happened, but they are not a breach of planning control
• Ground (d): it was already too late to enforce when the notice was issued
• Ground (e): the notice was not served on everyone it should have been
• Ground (f): the notice demands more than is needed to put the breach right
• Ground (g): the time allowed to comply is too short

It helps to see them as three groups. Grounds (b), (c) and (d) say there was nothing to enforce against in the first place. Grounds (e), (f) and (g) accept there may well have been a breach, but attack the notice as badly served, too demanding or too rushed. Ground (a) sits on its own: it concedes nothing and simply asks for permission anyway.

Your own circumstances are not a ground of appeal in themselves, but they can carry real weight inside two of these. Our page on human rights and planning enforcement explains what a council and an Inspector have to weigh, what evidence is worth putting in, and why the argument wins more often on the time allowed than on the notice itself.

 

Ground (a): asking for permission anyway

 

Ground (a) is the only ground that asks the Inspector to look at the planning merits, meaning whether what you built or did is actually acceptable. Every other ground is an argument about the notice or about the facts.

Running it has three consequences worth knowing before you commit to it.

First, you are treated as having made a planning application for the matters set out in the notice. There is no separate form to fill in, because the appeal carries the application along with it. Our page on deemed planning permission explains how that works.

Second, a fee is payable for that deemed application; see our planning application fees guide for the current charging rule. If you are written to with a period for paying and the money does not arrive in time, the ground (a) part of your appeal lapses, and so does the application. The rest of the appeal carries on without it, unless ground (a) was the only ground you pleaded, in which case there is nothing left and the whole appeal ends. That is the most avoidable way there is to lose the merits argument.

Third, the Inspector can only grant permission if your written statement of grounds actually names ground (a). Wanting the merits looked at is not enough, and nor is arguing them in your evidence. If ground (a) is not pleaded, there is no power to grant permission at all.

If permission is what you really want, rather than a fight, applying after the event may be the better road. Our guide to retrospective planning permission sets out that decision, and it is a real decision, because taking one road can close the other.

 

When ground (a) is not available in England

 

Since 25 April 2024 there has been a restriction in England that catches people out. You cannot run ground (a) where the notice was issued after you had already applied for planning permission for the same thing.

The idea is to stop a second bite. You are not meant to apply, get refused, and then get a fresh run at the merits through the enforcement appeal as well.

Three details matter:

• the earlier application counts if granting it would have covered the matters the notice calls a breach, and it can have been for something larger than the notice describes
• an application the council or the Secretary of State refused to deal with at all is ignored, so being turned away does not cost you ground (a)
• the bar lifts if that application has stopped being under consideration and the notice was issued more than two years after that point

Stopping being under consideration has a precise meaning, and the date it runs from depends on whether you were refused, appealed and lost, or simply let the time run out. If your dates are anywhere near that two year mark, get them checked by someone.

Wales has its own version of this restriction and it is not the same one. There, the bar bites where the notice was issued after a refusal for related development had been upheld on appeal, with a matching rule about conditions. If your land is in Wales, do not rely on the England wording.

An enforcement warning notice is the letter that invites you to apply in the first place. If you took up that invitation, check these dates carefully before counting on ground (a).

 

Grounds (b) and (c): it did not happen, or it was not a breach

 

These two get muddled constantly, and the difference decides what evidence you need to gather.

Ground (b) is about facts. You are saying the things described in the notice did not occur: the extension was never built, the use never started, the condition was never broken. That is proved with dated photographs, invoices, delivery notes, bills and statements from people who were there.

Ground (c) accepts the facts and attacks the label. Yes, it happened, but it is not a breach of planning control, because it was permitted development, or it was not development at all, or it was already covered by a permission you hold. That is an argument about law and planning judgement rather than about what took place.

There is a prize attached to these two that very few people know about. On an enforcement appeal the Inspector can decide that what is on the land is lawful and issue a certificate saying so. That is worth having, because a quashed notice only removes the notice, whereas a certificate is a positive ruling you can hand to a buyer’s solicitor years later. Our guide to a certificate of lawfulness of existing use or development explains what one is worth.

 

Ground (d): it was already too late

 

Ground (d) says that on the day the notice was issued, no enforcement action could be taken at all, because the breach had already become immune with the passage of time.

In England that is now ten years for almost everything, following a change on 25 April 2024, with a four year limit preserved for some older building work and some conversions to a single home. Wales keeps four years for those older categories. Our page on enforcement time limits works through which clock applies to you, and it pays to be precise, because the answer turns on what kind of breach it is and when it happened.

Two traps sit here. The work of proving how long the breach has been there falls on you in practice, and where the breach is a use, you have to cover the whole period rather than just the start and the end of it. And the clock stops once the council takes enforcement action, which issuing the notice does; an information notice such as a section 330 notice or a planning contravention notice does not.

 

Ground (e): they did not serve it properly

 

A copy of the notice has to go to the owner and the occupier of the land, and to anyone else with an interest in it that the council believes is materially affected. Ground (e) says that did not happen.

On its own this ground rarely wins, and it is worth understanding why before spending money on it. Even where service has genuinely gone wrong, the failure can simply be disregarded, so long as neither you nor the person who missed out has been substantially prejudiced by it. Prejudice is the test, not tidiness.

Where it does bite is where somebody with a real stake, a mortgage lender, a leaseholder, a co-owner, lost the chance to appeal in their own right. That is a genuine loss, and it is the version of ground (e) worth running.

Note also that you can appeal even if the notice was never served on you at all, provided you have an interest in the land, or you occupy it under a licence and still do so when the appeal goes in. Not being served is not the same as having no right to appeal.

Turner v Secretary of State for Housing, Communities and Local Government [2025] EWHC 2815 (Admin) shows how service can work on a very large site with many separate occupiers. The council did not know every occupier, but it sent the notice to those it could identify and also fixed a copy conspicuously to the entrance gates across the only access to the land. The High Court held that this was valid service under section 329(2)(b)(ii). In the enforcement context, the “premises” will ordinarily be the land to which the enforcement notice relates; the council did not have to fix a separate copy outside every individual compound.

The word conspicuously still matters. Fixing a notice somewhere obscure on a large site would not necessarily do the job. And if somebody genuinely was not served, substantial prejudice under section 176(5) remains fact-sensitive. Simply saying “I would have appealed” may not be enough if no viable ground is identified and the occupier later knew about the inquiry but chose not to participate.

 

Ground (f): the notice asks for too much

 

Ground (f) is the workhorse of enforcement appeals. It does not say the council was wrong to act. It says the notice goes further than it needs to.

A notice can only require steps for one of two purposes: putting the breach right, or repairing the harm to amenity that the breach caused. Anything demanded beyond those two purposes is open to attack, and so is a requirement that would leave you worse off than you were entitled to be by taking away something you could lawfully have had anyway.

There is a limit on this ground that is easy to miss and expensive to get wrong. It was settled by the Court of Appeal in Miaris v Secretary of State for Communities and Local Government and Bath and North East Somerset Council [2016] EWCA Civ 75.

The second half of ground (f), the part about going beyond what is needed to repair harm to amenity, can only be run without ground (a) where the requirement you are attacking is there solely to repair that harm. If the same requirement also answers a wider planning objection, arguing about amenity gets you nowhere, because trimming it back would not cure the wider objection. What matters is the nature of the objection, not which words the council happened to use.

The court was also clear about two things people hope for and do not get. There is no free standing right to have an Inspector consider some obvious alternative to what the notice requires. And the power to correct or vary a notice is a slip rule, generously worded but still a slip rule: it lets errors be tidied up where that causes injustice to neither side, and it is not a way of reopening the merits.

The lesson is blunt. If you want the merits of your development looked at, plead ground (a) and pay the fee. Ground (f) on its own will not get you there.

Winning on ground (f) has a second payoff worth knowing about. Get the requirements cut back, then comply in full with what is left, and the rule on under-enforcement can hand you permission for the part you kept.

 

What a notice cannot take away

 

Ground (f) has a companion principle that matters to householders in particular. A notice must not be drafted so as to strip you of rights you already hold lawfully.

Those rights come from two places. There are existing lawful uses, meaning things you were already doing that had become immune with age or were always allowed, and which you can go back to once the notice has been complied with. And some things are not development at all, so they never needed permission in the first place. Using a building in your garden for something incidental to living in the house is one, and so are works inside a building that do not change how it looks from outside.

The reassuring part is that you do not need the notice to say any of this. The courts read an enforcement notice as preserving those rights whether it mentions them or not, and an Inspector is under no obligation to write them in, because the law already defines them clearly enough on its own. That was confirmed in Gurvits and Gurvits v Secretary of State for Levelling Up, Housing and Communities [2024] EWHC 490 (Admin), which traces the principle back to a long-standing case usually known as Mansi. The Court of Appeal set out the limits of that principle in Titchfield Festival Theatre Ltd v Secretary of State for Housing, Communities and Local Government [2026] EWCA Civ 368: it governs how a notice is drafted, so that the notice does not cut across rights you keep anyway as a matter of law. It is not a way of reading extra meaning into the Act itself.

What the principle does not do is rescue works that were part and parcel of the unauthorised use. In Gurvits a family had joined three garden outbuildings into a single office, and the notice required the kitchen units and the toilets to be taken out. The court held that was fair, because those fittings were integral to the office use, even though the buildings themselves were perfectly lawful and could go back to ordinary garden use once separated again.

South Darenth Farms and Cold Store Company Limited v Secretary of State for Housing, Communities and Local Government [2025] EWHC 2646 (Admin) pushes the point a step further. The Inspector had wrongly said that walls and fences could not benefit from permitted development because article 3(5) of the GPDO applied to the unlawful use. The Secretary of State accepted that was an error. Even so, the High Court held that the result would inevitably have been the same under the Murfitt principle.

The important point is that Murfitt v Secretary of State for the Environment and East Cambridgeshire DC (1980) 40 P&CR 254 can apply even where the works, looked at on their own, would benefit from permitted development rights. If the works are merely ancillary or secondary and are genuinely integral to, or part and parcel of, the unlawful use, an enforcement notice aimed at that use can require their removal to restore the land. Permitted development rights are not a special exception. But the principle does not extend to works carried out for an earlier lawful use which can still serve that or another lawful use once the breach stops, nor to operational development which is itself fundamental to or causative of the change of use rather than merely ancillary.

A September 2026 Greenford enforcement appeal gives a fresh residential example. The Inspector considered Murfitt alongside Kestrel Hydro [2016] EWCA Civ 784 and Caldwell [2024] EWCA Civ 467. Extensions that did not themselves constitute the material change of use could still be required to be removed because, on the Inspector’s findings, they facilitated the unauthorised use as two HMOs. The decision also had a less drastic alternative: the owner could alter the building to accord with an extant permission for two flats. See our Greenford Class L and enforcement appeal report for the full reasoning.

So this argument works best when you can point to a particular right the notice would destroy. It works badly as a general complaint that the notice feels harsh.

 

Ground (g): not enough time to comply

 

Ground (g) is the most modest of the seven and the most often overlooked. It accepts everything else and says only that the period the notice allows is shorter than is reasonable.

It is worth running whenever compliance needs more than a weekend: finding a contractor, taking a structure down safely, moving a business, rehousing animals, finding somewhere else to live. Say what has to be done, how long each part of it takes, and why. Vague pleas for more time do not succeed, but a schedule does.

Even on its own, ground (g) has real value. The appeal holds the notice off while it is being decided, and a longer compliance period at the end of it can be the difference between an orderly move and a crisis.

Grounds (f) and (g) belong to the appeal stage. Once the effective date has passed, or an appeal has ended, they cannot simply be run again. The separate section 173A power allows the local planning authority to waive or relax a requirement or extend the compliance period later, but that is discretionary and asking for it does not suspend the notice.

 

The additional grounds for demolition in a conservation area

 

There are seven ordinary grounds of appeal in section 174(2), lettered (a) to (g). Where the breach concerns relevant demolition of a building in a conservation area in England, section 174(2C) adds a separate set of special grounds.

In that situation you can also appeal on the basis that the demolition was urgently necessary in the interests of safety or health, that it was not practical to make things safe by repairs or by propping or sheltering the building instead, and that what came down was the minimum needed. All three have to be met, not just the first, and that is where these arguments usually fail: the building genuinely was dangerous, but more of it came down than had to.

One further point matters here. There is no time limit at all on enforcement against this kind of demolition, so it never becomes immune with age, and ground (d) is simply not available. There is no waiting it out.

 

Pleading a ground is not the same as proving it

 

This is where enforcement appeals are quietly lost.

Giving notice of the appeal is only the first step. You then have to send in a written statement saying which grounds you rely on and giving the facts behind each of them, either with the appeal itself or within the period you are allowed.

Name several grounds and then fail to supply the required information for one of them in time, and the appeal can be decided without that ground being considered at all. It is not treated generously just because you mentioned it. An appeal can also be dismissed outright if you never send that statement in, and in England it can be dismissed if you are responsible for holding the appeal up and then fail to get moving after a warning.

So the honest test for each ground is not whether it could be true. It is what you have that proves it, and whether you can get that in on time.

 

What you actually win on each ground

 

The enforcement appeal grounds produce genuinely different results, which is why the choice matters so much:

• win on ground (a) and you come away with planning permission for what has been allowed
• win on ground (b), (c) or (d) and the notice is quashed, and you may also walk away with a certificate confirming that the position is lawful
• win on ground (e) and the notice may be quashed, but only where the failure caused real prejudice
• win on ground (f) and the requirements are cut back rather than removed
• win on ground (g) and you get longer, and nothing else

A defect in the notice can also be corrected, or the notice varied, along the way, so long as that causes injustice to neither side. That cuts both ways: a notice with a wobbly description may well be tidied up rather than struck down, so bad wording is not by itself a winning appeal.

 

What the grounds cost to run

 

The appeal itself carries no fee to the Planning Inspectorate, whichever grounds you run.

Ground (a) is the exception, because of the application that comes with it. A deemed-application fee is payable for ground (a). The statutory charging rule is different from an ordinary application, so use our planning application fees guide for the current position rather than relying on a figure copied onto an enforcement page. Pay inside the period you are given, or the ground (a) part lapses.

There is a refund rule worth knowing about. Where the appeal succeeds on any of grounds (b) to (f), or on the basis that the notice is invalid or carries a defect that cannot be corrected, that fee is refunded. Winning only on ground (g) does not get it back, and nor does coming away with a lawfulness certificate instead.

The other money risk is about behaviour rather than outcome. At an appeal an award of costs can be made against a party who acts unreasonably, and that applies to an appellant running a hopeless ground just as much as to a council that has behaved badly.

 

If the appeal fails

 

An Inspector’s decision on an enforcement appeal is final on the planning merits. The only route past it is an appeal to the High Court on a point of law, which needs the court’s permission and has to be brought within 28 days of the decision. Even a win there does not replace the decision: the case goes back to be decided again.

Our page on planning appeals covers the appeal system generally, and our guide to judicial review and High Court challenges explains what that narrow route involves. Neither is a step to take without proper legal advice.

 

Should you run every ground?

 

No. Throwing in all seven is a common instinct and usually a mistake.

Every ground you plead is a ground you have to evidence, and keep supported all the way to the end. A weak ground dilutes a strong one, hands the council something easy to knock down, and in a bad case invites a costs award against you. Two well evidenced grounds beat seven asserted ones.

The other question worth asking honestly is whether to appeal at all. If the breach is real, the notice sound and the requirements fair, complying may cost less than fighting, and an application after the event may stand a better chance than a thin ground (a). Sometimes the best result comes from a conversation with the council before the effective date rather than an appeal after it.

Because so much turns on your own facts, the dates, the evidence you can actually produce and exactly what the notice says, this is the point at which advice pays for itself. If you would like a read on your notice before the deadline runs down, you can reach our team via here to help.

Enforcement appeal grounds relevant legislation

The primary sources below are on legislation.gov.uk. Check the “Changes to Legislation” panel at the top of each page for amendments not yet written into the revised text.

The grounds are set out in section 174(2) of the Town and Country Planning Act 1990. Ground (f) reads:

(f) that the steps required by the notice to be taken, or the activities required by the notice to cease, exceed what is necessary to remedy any breach of planning control which may be constituted by those matters or, as the case may be, to remedy any injury to amenity which has been caused by any such breach;

• Town and Country Planning Act 1990, s174: the right of appeal, the seven grounds at subsection (2), the England restriction on ground (a) at subsections (2A) to (2B), the extra demolition ground at subsection (2C), the Wales restrictions at subsections (2D) to (2F), and the written statement of grounds at subsections (4) and (5)
• Town and Country Planning Act 1990, s173: contents and effect of an enforcement notice, including the two purposes at subsection (4) against which ground (f) is measured
• Town and Country Planning Act 1990, s176: powers on appeal, including correction and variation where no injustice is caused, and the power to disregard a failure to serve that caused no substantial prejudice
• Town and Country Planning Act 1990, s177: grant of permission on appeal, the certificate of lawfulness power, the deemed application, and the lapse of ground (a) where the fee goes unpaid
• Town and Country Planning Act 1990, s171B: the enforcement time limits against which ground (d) is measured
• Town and Country Planning Act 1990, s289: appeal to the High Court on a point of law

Other Enforcement Sections

 

 

 

Enforcement appeal grounds Page Updated: 6th September 2026