Planning enforcement order: acting after deliberate concealment

Normally a council has a limited time to act against building work or a change of use that never had permission. Once that time runs out, the breach usually becomes lawful and cannot be touched. But deliberate concealment can change that position. A planning enforcement order is one of the important routes available to a council.

A planning enforcement order is a special order a council can ask a magistrates’ court to make. If the court agrees that a breach was deliberately concealed, the council gets a fresh window to take enforcement action even though the normal time limit has already passed. But it is important not to treat the order procedure as the only concealment rule: the separate public-policy principle developed in the Welwyn Hatfield line of cases can also prevent a person relying on the normal immunity period in an appropriate case.

This page explains when a council can seek an order, how the process works, and how the statutory route fits with the concealment case law. It also covers what it costs to sort a breach out and what happens if the council refuses to grant permission after the event.

Why the time limit exists, and why concealment breaks it

The council can only act against a breach of planning control for a set period. For anything that happened in England on or after 25th April 2024, that period is ten years for almost everything. For older breaches, and still in Wales, a shorter four year period can apply to building work and to turning a building into a single home. Our page on enforcement time limits sets out which clock applies to what.

The idea behind the time limit is simple. It is meant to be a period during which a council would normally spot an unlawful building or use. Once it passes, the law lets things settle so people can get on with their lives. But that only makes sense if the breach was there to be seen. If someone hides it on purpose so the council never gets the chance to act, the whole reason for the time limit falls away.

What a planning enforcement order does

A planning enforcement order does not itself force anyone to pull anything down. It simply reopens the door. If a magistrates’ court makes the order, the council gets an “enforcement year” in which it can take enforcement action against the concealed breach, even if the ordinary time limit has already run out.

That enforcement year begins once a short waiting period has passed after the court’s decision, and it runs for a year. Inside that year the council is free to serve an enforcement notice or take other steps in the normal way. If someone challenges the court’s decision by asking the High Court to look at it, the year instead runs from the end of those proceedings. The order does not shut off the ordinary time limit either: if that limit has somehow not yet expired, the council can still act under it after the enforcement year ends.

When a court will make the order

A magistrates’ court will only make a planning enforcement order if two things are met. First, the court must be satisfied, on the balance of probabilities, that the breach was deliberately concealed by someone. It does not have to be the current owner, and the concealment only has to be to some extent, not total. Second, the court must think it is just to make the order, looking at everything about the case. The order itself has to identify the breach it covers and record the date the court decided to make it.

The council has to move quickly once it knows

There is a tight deadline on the council’s side. It must apply for the order within six months of the day it had enough evidence of the breach to justify the application. To pin that date down, an officer signs a certificate stating when the evidence came to the council’s knowledge, and that certificate is treated as conclusive proof of the date unless the contrary is shown. The council also has to serve a copy of its application on the owner and occupier of the land, and on anyone else with an interest that would be materially affected. Those people, and others the court thinks are affected, can turn up and have their say.

The two cases that shaped the law: the barn and the castle

Two cases hang over this whole topic, and both involved a home hidden in plain sight.

In the first, a man built what looked from the outside like a farm hay barn on green belt land, having got permission only for an agricultural barn. Inside, it was a fully fitted three bedroom house, and he and his wife lived in it for four years without the council realising. When he finally applied to have the use declared lawful, the Supreme Court refused to let him profit from the deception. The court held that a person should not be allowed to benefit from his own wrong, and that positive, deliberately misleading statements which stop a council discovering a breach take the case outside the whole point of the time limit. That case was Secretary of State for Communities and Local Government v Welwyn Hatfield Borough Council [2011] UKSC 15, often called the Beesley case.

In the second, a man built a mock castle, complete with battlements made from grain silos, and hid the entire construction behind a tall wall of straw bales topped with a tarpaulin. He kept it hidden for four years, then took the bales down and argued the time limit had run out. The High Court held that putting up and taking down the straw bales was part and parcel of building the house, because he had always meant to remove them once he thought he was safe. So the building was not treated as finished until the bales came down, which meant the council was still in time. The Court of Appeal later went further, holding that it made no difference whether the bales counted as part of the building or not: hiding a house on purpose is a deliberate deception, and a deception by what you do is just as serious as a deception by what you write on a form. That case was Fidler v Secretary of State for Communities and Local Government [2011] EWCA Civ 1159, upholding the earlier ruling in Fidler [2010] EWHC 143 (Admin).

Between them, these two cases show the courts were already finding ways to defeat deliberate concealment before Parliament stepped in. The planning enforcement order, brought in by the Localism Act 2011, added a clear statutory procedure for these situations.

A planning enforcement order is not the only concealment route

This is where Jackson v Secretary of State for Communities and Local Government [2015] EWHC 20 (Admin) becomes important. The argument in Jackson was that Parliament had replaced the Welwyn Hatfield public-policy principle when it introduced planning enforcement orders. The High Court rejected that argument. The statutory PEO provisions sit alongside the existing principle rather than replacing it.

The Court of Appeal subsequently upheld that approach in Bonsall v Secretary of State for Communities and Local Government [2015] EWCA Civ 1246. In practical terms, a council or Inspector dealing with an immunity argument is not necessarily forced to obtain a planning enforcement order first before deliberate concealment can become relevant.

Jackson also warns against treating the four particular features identified in Welwyn Hatfield as a rigid checklist which must all be present in every case. Deliberate concealment cases are fact-sensitive. Fidler, for example, involved physical concealment rather than a false statement made in the planning process.

This is why the two routes should be kept separate. A planning enforcement order gives the council a statutory additional period in which to act. The Welwyn Hatfield principle concerns whether a person can rely on the ordinary statutory immunity period at all in the face of sufficiently serious deliberate deception.

What it costs and what if permission is refused

If you are on the other side of this, and a breach on your land has come to light, the sensible step is usually to try to put it right rather than fight. That can mean applying for permission after the event. There is normally a fee for that kind of application, and you can check what applies on our planning application fees page rather than relying on a figure here, because fees change.

Be careful before assuming an application will fix everything. Getting permission after the event is never guaranteed, and a concealed breach starts from a poor position. If the council refuses, you may be able to challenge that refusal by appealing. Our page on planning appeals explains how that works and how long you have.

Where this fits with the rest of enforcement

A planning enforcement order is only the first move. Once the council has its fresh window, it still has to use the normal enforcement tools. You can read more about the enforcement notice itself, about enforcement time limits generally, and about what happens if you ignore an enforcement notice.

Relevant legislation for a planning enforcement order

The links below open the official text on legislation.gov.uk. Use the “Changes to Legislation” panel on each page to check for anything not yet built into the text.

• Town and Country Planning Act 1990, section 171BA (time limits in cases involving concealment)
• Town and Country Planning Act 1990, section 171BB (planning enforcement orders: procedure)
• Town and Country Planning Act 1990, section 171BC (making a planning enforcement order)
• Town and Country Planning Act 1990, section 171B (the enforcement time limits)
• Localism Act 2011, section 124 (which inserted the concealment provisions)

Other Enforcement Sections

Planning Enforcement Order Page Updated: 30th August 2026