Buying a house with an enforcement problem

 

Buying a house with an enforcement problem is one of the few planning traps that can land on you rather than on the person who caused it. You did not build the thing, you did not carry out the work, and yet once you own the land you can be the one the council comes to.

That sounds frightening, and in a small number of cases it is serious. But most of it is avoidable if you know what to look for before you commit. The trouble usually comes from not asking the right question in time, not from bad luck.

This page explains what an enforcement problem actually is, how to spot one before you exchange, why some of them follow the house to a new owner, and what to do if you find one.

 

What buying a house with an enforcement problem really means

 

An enforcement problem means something has been built or changed at the property without the planning permission it needed, and the council still has the power to do something about it. That might be an extension that never got permission, a use of the building the council never agreed to, or work that broke a condition on a permission that was granted.

The important thing to understand is that planning enforcement attaches to the land, not to a person. If the council has already served a formal notice, that notice runs with the property. When you buy, you step into the shoes of the previous owner, and the notice is now your problem to sort out.

 

The notice can become your responsibility

 

This is the part that catches people out, so it is worth being plain about it. Once a formal enforcement notice is in place and the time it gave to put things right has run out, the law puts the duty on whoever owns the land at that point. Buy the house, and that is you.

Failing to comply with an enforcement notice is a criminal offence, and the fine is unlimited. The council can also do the work itself and send you the bill. You may be able to recover that money from the person who actually caused the breach, but that is a fight you would rather not inherit in the first place.

There are statutory defences, but they are narrower than simply saying you did not know about the notice. Under section 179(3), an owner prosecuted for being in breach can defend the case by showing that they did everything they could be expected to do to secure compliance. Section 179 also contains a separate defence linked to non-service, the enforcement register and lack of knowledge. These are criminal-law defences to a prosecution, not a way of making the enforcement notice disappear.

 

I bought the property without knowing there was an enforcement notice

 

This is a horrible position to discover after completion, but the planning starting point is fairly stark. An enforcement notice runs with the land. A purchaser can inherit the practical obligation to comply even though somebody else carried out the development, caused the unlawful use, received the notice and ran any appeal.

Buying innocently does not create a fresh right of enforcement appeal. An appeal under section 174 has to be made before the notice takes effect. If that date passed years before you bought, the sale does not restart the appeal clock.

That is why the council’s enforcement register under section 188 and the local land search matter so much on a purchase. The conveyancing history should be checked carefully against the notice itself, any appeal decision and the current physical use of the property.

For a prosecution under section 179, the fact that you did not cause the original breach is not by itself a defence. The important statutory protection for an owner is section 179(3): whether you did everything you could reasonably be expected to do to secure compliance. There is also the separate defence in section 179(7), which depends on the statutory conditions about service of the notice, its entry in the register and the person’s knowledge being met. Do not turn either defence into the looser proposition that an innocent purchaser cannot be prosecuted.

Evidence of what the new owner did once the problem was discovered can therefore matter greatly. Promptly obtaining the notice and appeal papers, stopping any continuing unlawful activity where possible, commissioning the works or advice needed for compliance, engaging with occupiers or other people whose cooperation is required, and putting forward a credible timetable can all be relevant to whether the owner really did everything that could be expected.

Possible claims against the seller, a conveyancer or another professional are separate civil and legal issues. They may affect who ultimately bears the financial loss, but they are not planning defences and they do not suspend the enforcement notice.

If there is enforcement indemnity insurance, check the policy terms before contacting the council. Some policies restrict contact or disclosure and approaching the authority first can prejudice cover. This is one of those moments when the planning problem and the conveyancing problem need to be looked at together.

Where the new owner wants to resolve the inherited notice constructively, section 173A can provide a negotiated route. The authority may withdraw the notice, waive or relax a requirement, or extend the compliance period. It is discretionary, but it can be particularly useful where the unlawful use will stop and an alternative lawful configuration makes part of an old reinstatement requirement unnecessary.

 

How to spot a problem before you commit

 

Your solicitor or conveyancer does most of this as a matter of routine, but it helps to know what they are looking at and to prompt them if anything feels off.

• the local searches your solicitor carries out, which pick up formal enforcement notices and many related entries against the property
• the council’s own enforcement register, which anyone can inspect free of charge and which lists the main formal notices
• the permission and building history for anything that looks newer than the original house: an extension, a loft conversion, an outbuilding, a change from one use to another
• any completion or sign-off paperwork the seller can produce for that work
• the seller’s answers on the standard property information form, where undisclosed work sometimes surfaces

If an extension or a converted barn is the reason you like the place, that is exactly the thing to check hardest. Ask to see the permission, and ask what happened to any conditions attached to it.

 

Some problems do not show up on a search

 

This is the gap worth knowing about. The public register only lists certain notices. Several of the council’s powers leave no entry on it at all, so a clean register is reassuring but not a complete answer.

The register does not show a temporary stop notice, a notice about untidy land, a court injunction, a listed building enforcement notice, or the early-stage notices a council uses to gather information. A property can be under active attention with nothing yet showing. Your solicitor’s wider searches and direct questions to the council are what fill the gap, which is why a thorough conveyancer earns their fee here.

 

When time is on your side, and when it is not

 

Not every breach can be enforced forever. Planning law gives time limits after which the council can no longer take formal action against most breaches, and once that time has passed the development is treated as lawful. Where that has happened, the seller can often obtain a certificate confirming it, which is the clean way to lay the worry to rest.

Do not work this out yourself on the back of an envelope. The rules on when the clock starts and when it runs out changed recently, and a mistake here is expensive. Our page on enforcement time limits sets out how long the council has, and a certificate of lawfulness is how a seller proves the point.

 

What to do if you find one

 

Finding a problem is not the same as walking away. It is a reason to slow down and get it valued properly before you decide.

• ask the seller to sort it before completion, either by putting the work right or by making a retrospective application to regularise it
• ask whether the time limit has already passed, and if so, whether the seller will obtain a certificate of lawfulness to prove it
• consider indemnity insurance, which can cover the risk of the council acting, but read what it actually covers and be aware it does not make an unlawful thing lawful
• renegotiate the price to reflect the cost and the risk you would be taking on
• be ready to walk away if the seller will not engage, because an unresolved notice does not improve with age

Whether to press ahead is a judgement about how serious the breach is and how likely the council is to act, not a simple yes or no. A trivial technical breach the council would never bother with is a very different thing from a live notice with a deadline on it.

 

What it costs

 

There is no council fee for inspecting the enforcement register, which is open to anyone free of charge. If the fix is a retrospective planning application, that carries the normal application fee, and there is no discount for doing it after the event. See our guide to planning fees for how those are worked out. Your solicitor’s searches and any indemnity insurance are separate costs your conveyancer will set out.

 

Refusing, and appealing

 

If the seller makes a retrospective application to put things right and the council refuses it, there is a right of appeal, and our guide to planning appeals explains it. If the council has served an enforcement notice, that too can be appealed, but only on set grounds and within a tight deadline, and once you own the property that clock may be running against you. Some council actions cannot be appealed at all and can only be challenged in the High Court on a very short deadline, so take advice quickly rather than assuming there is time.

 

Where to read more

 

To understand the notice that most often follows a property, see our page on the enforcement register and what the council must publish. For the wider picture of how councils enforce and what powers they hold, see our guide to planning enforcement. If you are dealing with untidy land next door rather than your own purchase, see our page on the section 215 notice for untidy land.

 

 

Relevant legislation for buying a house with an enforcement problem

 

Links below go to legislation.gov.uk. Always check the “Changes to Legislation” panel at the top of each provision, because amendments are often listed there before they are written into the text.

• Town and Country Planning Act 1990, section 179, offences for non-compliance and the statutory defences
• Town and Country Planning Act 1990, section 173A, withdrawal, waiver or relaxation of an enforcement notice and extensions of time
• Town and Country Planning Act 1990, section 178, the council’s power to do the work itself and recover its costs from the current owner
• Town and Country Planning Act 1990, section 171B, the time limits after which most breaches can no longer be enforced
• Town and Country Planning Act 1990, section 188, the register of enforcement and stop notices the council must keep

Other Enforcement Sections

 

 

 

Buying A House With An Enforcement Problem Page Updated: 26th August 2026