If you have been using a property or piece of land for a particular purpose for some time, you may need formal confirmation that the use is lawful for planning purposes. This is particularly important where there is uncertainty about the property’s planning history, previous permissions, or whether a change of use required planning approval.
A Lawful Development Certificate for Existing Use provides formal confirmation from the Local Planning Authority that an existing use, building operation or other relevant planning matter is lawful under planning legislation.
The certificate is commonly known as a Certificate of Lawfulness of Existing Use or Development. It can be useful for homeowners, landlords, business owners, property developers and prospective buyers who need to establish the planning status of an existing property or activity.
However, obtaining a certificate requires more than simply demonstrating that a property has been used in a particular way for several years. You must provide sufficient factual information and supporting evidence to establish that the relevant legal requirements have been met.
Whether you are seeking confirmation of an existing residential use, commercial activity, converted property or another established use, understanding the application process can help you prepare your case properly.
What Is a Lawful Development Certificate for Existing Use?
A Lawful Development Certificate for Existing Use is a legal document issued by the Local Planning Authority.
It confirms that a particular existing use of land or a building, operational development or activity carried out in breach of a planning condition is lawful for planning purposes.
In practical terms, it provides formal confirmation of the planning status of the specific use or development described in the application.
An existing certificate may be appropriate where:
The certificate does not grant retrospective planning permission. Instead, it confirms that the existing use or development is lawful under the relevant planning legislation.
It is also important to understand that the certificate only covers the specific use, operations or matters described in the application. A materially different use or subsequent development may require separate planning consideration.
When Might You Need a Certificate of Lawfulness for Existing Use?
There are several situations in which applying for an existing Lawful Development Certificate may be beneficial.
1. To Confirm an Existing Change of Use
One common reason for applying is to establish whether a change of use that has already taken place is lawful. For example, a property may have changed from one commercial activity to another, or a building may have been used for a purpose different from its original authorised use.
Not every change of use requires planning permission. Some changes may fall within the same use class, while others may benefit from permitted development rights. However, certain changes represent a material change of use and may require planning approval.
If the use has already taken place, an existing certificate may be appropriate where you believe the use is lawful but need formal confirmation. The application should clearly explain the nature of the existing use, when it began and how it has operated.
2. To Establish the Lawfulness of an Existing Business Use
Business owners may need to establish whether their current activities are lawful for planning purposes. For example, a property may have been used as commercial premises for several years, but the available planning records do not clearly establish whether the current activity was authorised.
An application may help confirm the existing use, provided the relevant legal requirements are satisfied. It is important to describe the actual activities taking place rather than relying solely on a general business description. The nature, scale and characteristics of the use may all be relevant to the assessment.
3. When a Property Has Been Used for Residential Purposes
A certificate may also be required where there is uncertainty about the existing residential use of a building or part of a property.
For example, a building may have been converted into separate living accommodation, or a property may have been used as an independent residential unit without clear planning documentation.
The application would need to establish the precise nature of the existing use and demonstrate why it is considered lawful. Depending on the circumstances, the Council may need to consider whether a material change of use has occurred and whether the relevant legal requirements have been satisfied.
4. Where Building Work Was Completed Without Planning Permission
You may discover that previous owners carried out building work without obtaining the necessary planning permission.
This could involve an extension, conversion, outbuilding or another form of operational development.
An existing Lawful Development Certificate may be an option where the relevant legal tests have been met. The application will need to establish the facts surrounding the development, including when the work was substantially completed and whether the applicable enforcement time limit has passed.
The age of the building work alone does not automatically establish that it is lawful. The relevant legal provisions and any transitional arrangements must be considered.
5. When Selling or Purchasing a Property
Uncertainty about the planning status of a property can create difficulties during a sale or purchase. A buyer’s solicitor or mortgage lender may request evidence confirming that a particular use or development is lawful.
An existing certificate can provide formal documentation of the planning position for the specific use or development covered by it.
If you are preparing to sell your property, obtaining the appropriate certificate may help address planning-related enquiries and provide greater clarity during the conveyancing process.
What Evidence Is Required for a Lawful Development Certificate for Existing Use?
Providing sufficient evidence is one of the most important parts of an existing certificate application. The applicant is responsible for demonstrating that the existing use or development is lawful. The information must be clear, accurate and relevant to the legal basis of the application.
The evidence required will depend on the circumstances of the property and the type of use or development being considered.
1. Dated Photographs
Photographs can help demonstrate the physical condition of a property or the nature of an activity taking place over time.
For example, photographs may show the layout of a building, the existence of an extension or how a particular area of land has been used.
Where possible, photographs should be dated or supported by other information that helps establish when they were taken.
2. Historical Documents and Records
Documents created during the relevant period can help establish the history of the property or use.
These may include:
Not every document will be relevant to every case. The aim is to provide information that helps establish the specific facts relied upon.
3. Statutory Declarations and Written Statements
Statements from people with direct knowledge of the property can provide useful supporting evidence.
For example, a previous owner, occupier, neighbour or person involved in the relevant activity may be able to confirm when the use began and how it continued.
Where appropriate, a statutory declaration may be prepared to formally record the information.
Statements should be detailed and consistent with the other evidence submitted. They should explain what the person knows directly rather than relying on assumptions.
4. Evidence of Continuous Use
For applications based on the passage of time, it is important to establish the relevant period and whether the use continued without significant interruption. Evidence may include dated photographs, invoices, business documents, utility records and statements from people familiar with the property.
The applicable enforcement time limit depends on the type of breach and when it occurred. Changes to planning enforcement legislation also introduced transitional provisions, so it is important not to assume that one time period applies to every application.
The evidence should establish the relevant dates and circumstances rather than simply stating that the property has been used in a particular way for a long time.
5. Plans and Property Information
The application should include a plan identifying the land or property to which the certificate relates.
Depending on the circumstances, additional plans may be required to identify the precise area covered by the existing use or development. Where a property contains several uses or separate areas of activity, the drawings should make the application boundaries and relevant areas clear.
How Does the Council Assess an Existing Use Application?
When assessing an application, the Local Planning Authority considers the facts, supporting evidence and relevant planning legislation.
Unlike a standard planning permission application, the authority does not assess whether the existing use is attractive, desirable or suitable from a planning merits perspective.
Instead, it considers whether the specific use or development is lawful under the applicable legal tests.
Establishing the Relevant Planning Position
The Council may review the property’s planning history, previous permissions and any relevant planning conditions.
This helps establish whether the existing use was originally authorised or whether a particular breach of planning control may have occurred. The authority may also consider whether the use falls within a particular planning use class or represents a material change of use.
Reviewing the Supporting Evidence
The Council will assess the information submitted to determine whether it sufficiently establishes the claimed lawfulness.
Where the application relies on the passage of time, the authority will need to consider the relevant dates, continuity of the use and the applicable enforcement provisions. If the Council has evidence that contradicts the applicant’s account, it may consider this when determining the application.
The applicant must therefore ensure that the information provided is accurate, consistent and sufficiently detailed.
Can the Council Contact Other People?
There is no general statutory requirement for the Council to carry out public consultation on a Lawful Development Certificate application.
However, the authority may seek relevant evidence from other sources where appropriate. For example, neighbours or previous occupiers may have information about when a particular use began or how long it has continued.
The assessment remains focused on whether the use is lawful, rather than whether other people support or object to it.
How to Apply for a Lawful Development Certificate for Existing Use
Although the application process is straightforward in principle, preparing the supporting information requires careful attention to detail.
The following steps explain how to approach the process.
Step 1: Review the Existing Use
Begin by establishing exactly how the property or land is currently being used.
Consider when the use began, whether it has changed over time, and whether there have been any significant interruptions. If the application relates to building work, establish when the development was substantially completed and whether any relevant planning permission or other approval exists.
Step 2: Review the Planning History
Check the property’s planning records to identify previous permissions, conditions, applications or enforcement correspondence.
This information can help establish whether the existing use was previously authorised and whether there are any planning restrictions that need to be considered.
Step 3: Identify the Legal Basis for the Application
The application should explain why you believe the existing use or development is lawful.
This may involve establishing that planning permission was not required or demonstrating that the relevant enforcement time limit has passed. The applicable legal test depends on the nature of the development and when the relevant breach occurred.
Step 4: Prepare the Supporting Evidence
Gather the documents that support your account of the existing use or development.
Organise the evidence chronologically where possible, particularly if the application relies on establishing how long a use has continued. Make sure that any statements, photographs and historical records are consistent and relate to the specific property or activity being considered.
Step 5: Complete the Application Form
The appropriate application form should be completed with the relevant property details, a precise description of the existing use and the reasons you believe a certificate should be granted.
You will also need to provide the required plans and information about your interest in the land.
Step 6: Submit the Application to the Council
Once the application and supporting documents have been prepared, they can be submitted to the relevant Local Planning Authority, generally through the Planning Portal or the Council’s own submission arrangements.
The applicable application fee must also be paid.
The Council will then check the submission and determine whether it contains the information required for validation.
Step 7: Await the Council’s Decision
After validation, the Local Planning Authority will assess the application and decide whether the evidence establishes that the existing use or development is lawful.
The standard determination period is generally eight weeks from validation, although further information requests or other circumstances may affect the process. If the application is successful, the Council will issue a certificate describing the use or development confirmed as lawful.
What Happens If Your Application Is Refused?
An existing Lawful Development Certificate application may be refused if the Council is not satisfied that the relevant legal requirements have been met.
Common reasons include:
If your application is refused, you should carefully review the Council’s decision and the reasons provided.
Depending on the circumstances, you may be able to submit further evidence, make a revised application or consider whether another planning route is appropriate. There may also be a right of appeal to the Planning Inspectorate. An appeal allows the decision to be reviewed in accordance with the relevant procedure and legal requirements.
A refusal does not necessarily establish that the existing use can never be lawful. It may mean that the evidence submitted was insufficient to demonstrate the claim.
What Does an Existing Lawful Development Certificate Confirm?
If your application is successful, the certificate provides formal confirmation that the specific existing use or development described in it is lawful for planning purposes.
This can be particularly useful when responding to planning enquiries, selling a property or establishing the status of an existing business or residential use.
However, the certificate has limitations.
It only covers the use or development identified in the document and does not automatically authorise a materially different use or further building work.
For example, if a certificate confirms the lawfulness of an existing commercial use, it does not necessarily authorise a different business activity or a significant intensification of that use.
It is therefore important to ensure that the certificate accurately describes the existing situation and the relevant land.
Does a Lawful Development Certificate Replace Building Regulations Approval?
No. A Lawful Development Certificate confirms the planning lawfulness of the specific use or development covered by the document.
It does not confirm that building work complies with Building Regulations or remove the need to obtain other relevant approvals. For example, an existing extension may be lawful for planning purposes but may still need to satisfy applicable Building Regulations requirements.
Planning and Building Regulations are separate processes, so it is important to consider both where building work has taken place.
How Expert Planning Consultants Can Help
Preparing an application for a Lawful Development Certificate for Existing Use can involve detailed consideration of planning history, evidence and the legal requirements.
At Expert Planning Consultants, we can help you assess your circumstances and identify the most appropriate route for establishing the planning status of your property or land.
Our support can include:
Every application is different, and the level of support required will depend on the property’s history and the evidence available.
If your circumstances involve an existing or proposed change of use, our guide to Change of Use Planning Permission provides further information about the planning considerations that may apply.
Frequently Asked Questions
What is a Lawful Development Certificate for Existing Use?
It is a legal document issued by the Local Planning Authority confirming that a specific existing use, building operation or relevant activity is lawful for planning purposes under the applicable legislation.
Can I apply for a certificate for a property that has been used for years?
Yes. You may apply for an existing certificate where you believe the use has become lawful under the relevant planning legislation. However, you must provide sufficient evidence to establish the facts and satisfy the applicable legal test.
How do I prove that an existing use is lawful?
You can provide supporting evidence such as dated photographs, historical documents, utility records, business records, statutory declarations and statements from people with direct knowledge of the property. The evidence required will depend on the nature of the application.
Does the Council need to consult my neighbours?
There is no general statutory requirement for public consultation on an existing Lawful Development Certificate application. However, the Council may consider relevant evidence from neighbours or other people who have direct knowledge of the existing use.
Can I obtain a certificate for an existing business use?
Yes. You may apply for a certificate to establish whether an existing business use is lawful for planning purposes. The application should accurately describe the activities taking place and provide evidence supporting the claimed planning status.
How long does an existing Lawful Development Certificate application take?
The standard determination period is generally eight weeks from validation. However, the actual time taken may vary if the Council requests further information or the application involves additional matters requiring consideration.
What happens if I cannot find the original planning permission?
You can review the property’s planning history and establish whether the existing use or development may be lawful on another basis. Depending on the circumstances, an existing Lawful Development Certificate application may be appropriate.
Does an existing Lawful Development Certificate have an expiry date?
A certificate does not generally have a fixed expiry date. However, it only confirms the specific use or development described in the document. A materially different use or subsequent development may require separate planning consideration.
Establish the Lawfulness of Your Existing Property Use
A Lawful Development Certificate for Existing Use can provide important confirmation of the planning status of a property, building or business activity. Whether you are seeking to establish an existing change of use, confirm previous building work or prepare for a property sale, providing accurate information and sufficient supporting evidence is essential.
The correct application route will depend on the nature of the existing use, its history and the relevant planning legislation. Taking the time to assess these matters before submitting an application can help you approach the process with greater clarity.
Contact Expert Planning Consultants today to discuss your Lawful Development Certificate for Existing Use requirements. We can help you assess your circumstances, review the available evidence, and prepare for the next stage of your application.