Understanding the UK's 7-year planning permission rule

At a Glance

The 7-year planning permission rule is often mentioned by UK sellers, but it does not create automatic approval for unauthorised work. In England, many planning breaches now move toward a 10-year enforcement period, with transitional rules for older works. Building regulations are separate from planning permission. This guide explains what sellers should check, when to speak to a conveyancer, and how missing paperwork can affect a sale.

Planning rules differ across England, Wales, Scotland and Northern Ireland. This guide focuses mainly on England, with notes where the position differs elsewhere. Always ask your conveyancer or a planning consultant to confirm the rules for your property.

What is the 7 Year Planning Permission Rule?

The 7-year planning permission rule is one of the most searched planning terms among UK homeowners preparing to sell, yet it is also one of the most misunderstood. The rule does not grant planning permission for work carried out without consent. What it refers to is a time limit on enforcement action, and the specific periods that apply depend on the type of development and the country within the UK where the property is located.

In England, planning enforcement limitation periods are set out in the Town and Country Planning Act 1990, as amended by later legislation. For operational development substantially completed on or after 25 April 2024, and for an unauthorised change of use to a single dwellinghouse on or after that date, the relevant enforcement period is generally 10 years. Transitional rules mean the four-year period may still apply to certain works or changes of use that took place before 25 April 2024. Other planning breaches generally remain subject to a 10-year period.

The seven-year figure is most commonly associated with the Irish planning system, specifically Section 157(4) of the Planning and Development Act 2000, which limits enforcement action for unauthorised development that has existed for more than seven years. This has filtered into UK property discussions and caused considerable confusion, particularly online.

If you have seen the seven-year rule cited in the context of an English or Welsh property, your conveyancer should clarify which enforcement period applies to the specific breach on your property.

What the Enforcement Limitation Period Actually Means

When the relevant enforcement limitation period has passed, the local planning authority can no longer issue a new enforcement notice for that specific breach. This does not mean the development is retrospectively approved, nor does it mean a buyer's mortgage lender will accept the property without further documentation.

A buyer’s lender may ask for further comfort, such as a certificate of lawful use or development, indemnity insurance, or additional conveyancer/surveyor advice, before proceeding. The fact that enforcement action is no longer available to the council does not remove the practical need to address missing paperwork during the conveyancing process.

How Long Does Planning Permission Last?

Separate from enforcement periods, “How long does planning permission last?” is a question that arises frequently when sellers are reviewing a property's consent history.

In England and Wales, full planning permission is commonly granted subject to a condition requiring development to begin within three years, unless the permission says otherwise. Outline planning permission, which establishes in principle whether a development is acceptable without fixing all the details, generally allows three years for the approval of reserved matters and a further two years from that approval to start work.

In Scotland, the default period is also three years under separate planning legislation. Northern Ireland operates under its own framework with broadly similar timeframes.

Conditions attached to individual permissions can vary these timeframes. Always check the specific decision notice for the property.

What Happens When Planning Permission Expires?

If planning permission expires before work has begun, it lapses entirely. There is no automatic extension, and the landowner would need to reapply. Whether a new application would succeed depends on current planning policy, which may have changed since the original permission was granted.

If work has started but not been completed before permission lapses, the position is more nuanced. Starting work in a meaningful way can preserve the permission for elements that have begun, but your conveyancer or planning consultant should advise on whether the specific works on your property qualify.

Planning Permission and Building Regulations: Two Separate Processes

One of the most common sources of confusion when selling a property is the difference between planning permission and building regulations approval. They are entirely separate processes, and a property can be missing one without being missing the other.

Planning permission is about whether a development is allowed to take place at all, taking into account the impact on the surrounding area, neighbours and the local environment. It is granted by the local planning authority.

Building regulations approval is about whether the work has been carried out to a safe technical standard, covering structural integrity, fire safety, energy efficiency, drainage and ventilation. It is overseen by building control, either through the local authority or a registered building control approver.

A situation sellers frequently encounter is having planning permission for an extension or loft conversion but no building regulations completion certificate to show that the work was inspected and signed off. These are different problems requiring different solutions, and your conveyancer will advise on the appropriate route for each.

The Building Regulations Enforcement Period

The building regulations enforcement period is separate from planning enforcement and is frequently misunderstood by sellers.

Building regulations enforcement is separate from planning enforcement. Current Planning Portal guidance says a local authority may use different enforcement routes, including compliance notices and section 36 notices, and that a section 36 notice can be issued up to 10 years after completion. The rules can depend on when the work was carried out and the type of work involved, so sellers should take conveyancer advice rather than relying on the age of the works alone.

Sellers should not rely on the age of the works alone. Mortgage lenders and buyers may still ask for a completion certificate, regularisation evidence, survey findings, or indemnity insurance where significant works were carried out without building regulations sign-off.

Your conveyancer will advise on the most appropriate route for your circumstances, taking into account the nature of the works, the lender's requirements and the findings of any survey.

How to Check Building Regulations on a Property

If you are preparing to sell and want to understand what consents are in place, knowing how to check building regulations on a property is a useful starting point. There are several ways to approach this.

Review your own records first. The property owner often holds completion certificates, building control notices and inspection records. If you had work done and a contractor managed the building regulations process, ask them for copies before assuming records are missing.

Speak to your conveyancer before contacting the council. Your conveyancer can raise specific enquiries with the local authority as part of the pre-sale process. It is important to take this step before approaching building control directly, particularly where there are gaps in the records, as contacting the local authority about missing approvals can affect the availability of indemnity insurance. This is a step where the order of actions genuinely matters.

Ask your conveyancer to raise local authority searches. These searches will identify planning and building control history registered with the council, though they may not always surface historic works that were never formally notified.

Use the Planning Portal for guidance. The Planning Portal is a useful resource for understanding what approvals are required for different types of work and for accessing application guidance. For the actual building control records on your property, the local council's building control department is the primary source.

Consult a RICS-qualified surveyor. A property survey can help identify alterations that may not have been signed off on through building control. Before selling, use the RICS Find a Surveyor tool to find a qualified professional who can assess the property and highlight any gaps.

Retrospective Building Regs: What Are the Options?

Retrospective building regs is the term used for seeking approval after work has already been completed without building regulations sign-off. There are two main routes, and which one applies depends on the age and nature of the work.

Regularisation Certificate

A regularisation certificate is available for work carried out without building regulations approval after 11 November 1985. It is applied for through the local authority building control department and involves an inspection of the completed work.

The inspection may require some opening up of the structure to allow the inspector to assess whether the work meets current standards. If the work is found to be satisfactory, a regularisation certificate is issued. If it falls short, the council may require remedial work before issuing the certificate.

A regularisation certificate can provide clearer evidence than indemnity insurance, but it is not always the right route during a sale. Your conveyancer should advise before you contact building control, because doing so may affect whether indemnity insurance remains available.

Indemnity Insurance

Where retrospective building regs approval is not practical or available, indemnity insurance is an alternative that conveyancers frequently use to allow transactions to proceed. A policy covers the buyer and their mortgage lender against the financial risk of enforcement action or loss of value arising from the missing approval.

Before pursuing indemnity insurance, speak to your conveyancer. Contacting the local authority about a missing approval before a policy is in place can invalidate the insurance, so the sequence of steps matters significantly. Your conveyancer will advise on whether regularisation or indemnity insurance is the more appropriate route given the nature of the works, your buyer's lender requirements and the findings of any survey.

Selling a Property with Missing Planning or Building Regulations

If you are selling a property where planning permission or building regulations approval is not fully documented, the most important first step is to speak to your conveyancing solicitor before taking any other action.

Your conveyancer will review the property's history, identify the gaps and advise on the appropriate route. Options may include applying for a certificate of lawful use or development, pursuing retrospective building regs through a regularisation certificate or putting indemnity insurance in place. The right approach will depend on your specific circumstances, the age and nature of the works involved and your buyer's mortgage lender requirements.

Being transparent with buyers about the position is essential. Sellers and agents should provide clear information about known planning or building-regulations issues when marketing a home, so buyers are not misled or left without important information. Government and industry guidance on material information has been changing, so your estate agent and conveyancer can advise on what should be disclosed for your specific sale.

Your estate agent plays an important role here too. While a conveyancer should always advise on your legal position, an estate agent with good experience selling properties with complex histories can help ensure the marketing process runs smoothly and that buyers are properly informed from the outset.

Certificates That May Be Relevant When Selling

For more guidance on what to do when building control paperwork is missing, read our guide to selling a house without a Building Control Certificate.

Working with the Right Estate Agent

Selling a property with a complex planning or building regulations history requires an agent who understands how to position the property clearly, manage buyer expectations and coordinate effectively with conveyancers on both sides of the transaction.

According to GetAgent's research, the UK average estate agent fee is 1.18% plus VAT (1.42% including VAT), with fees ranging from 0.75% to 3% plus VAT depending on the agent and location. The more useful question when choosing an agent is which one has the strongest performance selling homes like yours in your local area, not simply which charges the lowest fee.

GetAgent's data draws on completions recorded by HM Land Registry to show which agents in your postcode area achieve the strongest results on sale price, speed and success rate. Over 1.2 million UK homeowners have used GetAgent to compare local agents, and the comparison is completely free. You can compare local estate agents on GetAgent and see performance data specific to your area today.

References

• Building Act 1984
• GetAgent, Can you sell a house without a Building Control Certificate?
• GetAgent, Compare Estate Agents
• GOV.UK, Building regulations approval - how to apply
• GOV.UK, Enforcement and post-permission matters
• HM Land Registry
• Legislation.gov.uk, Town and Country Planning Act 1990
• National Trading Standards Estate Agency Team
• Planning Portal
• RICS Find a Surveyor tool