A property may look ready for renovation, extension or redevelopment, but its appearance does not necessarily reveal what planning permissions have been granted or what restrictions apply. Previous owners may have carried out alterations, changed the property’s use or obtained permission subject to conditions that affect what can happen next.
For buyers, investors and developers, checking planning permission is an important part of property due diligence. It can help identify planning restrictions, establish whether previous works were authorised and reveal potential issues that could affect the property’s future value or development potential.
Fortunately, much of this information can be accessed through local authority planning records. However, knowing where to look and which documents to examine is essential. A simple search showing that planning permission was granted does not necessarily establish that the property complies with the approved plans or that the permission remains capable of implementation.
Why Should You Check Planning Permission on a Property?
A property’s planning history can have a direct bearing on how it may be used, altered or developed. Checking the records before purchasing or commencing a project can help uncover issues that may otherwise become expensive problems.
There are several reasons to investigate a property’s planning position.
To Confirm Whether Previous Building Work Was Authorised
Extensions, loft conversions, outbuildings and other alterations may require planning permission, depending on their nature and the circumstances.
Checking the planning history can help establish whether the relevant permission was granted or whether the works may have been carried out under permitted development rights.
Where no permission is recorded, further investigation may be necessary. The absence of an online planning application does not automatically mean that the work is unlawful.
To Understand Restrictions on Future Development
A property may have permission for a particular type of development but still be subject to conditions restricting its use or future alterations.
For example, a planning permission may include conditions relating to:
- External materials and architectural appearance.
- Landscaping and boundary treatments.
- Vehicle access and parking arrangements.
- Opening hours or operating activities.
- Restrictions on permitted development rights.
- Drainage, biodiversity or environmental protection.
These conditions may influence whether a proposed extension, conversion or change of use can proceed without further approval.
To Identify Potential Planning Enforcement Issues
A property with unauthorised alterations or an unauthorised change of use may be at risk of planning enforcement action.
Local authorities maintain public registers of certain formal enforcement notices and related action. Reviewing these records can help identify known enforcement issues, although an online search may not reveal every investigation or potential breach.
To Protect a Property Investment
For a buyer, discovering that an extension lacks the necessary permission or that a commercial use is unauthorised can affect the property’s value and future development potential.
A planning history review can help identify risks before contracts are exchanged and allow the buyer to seek appropriate advice.
How to Check Planning Permission on a Property
In England, local planning authorities maintain planning registers containing information about applications and decisions within their areas. Many councils make these records available through online planning search systems.
The following steps provide a practical starting point.
Step 1: Identify the Local Planning Authority
The first step is to establish which local council is responsible for planning decisions affecting the property.
Planning applications are generally handled by the local planning authority covering the location of the site. Depending on where the property is situated, this may be a district, borough, metropolitan or unitary council.
Once identified, visit the council’s website and look for its planning applications or planning register section.
Step 2: Search the Property Address or Postcode
Most council planning portals allow users to search for applications using one or more of the following:
- Full property address.
- Postcode.
- Planning application reference number.
- Street name or location.
- Map-based property search.
If you do not have an application reference number, start with the full address or postcode.
Some systems also allow searches by date, application type or planning status. These options can be useful when investigating properties with a long planning history.
Step 3: Review the Planning Application History
Once you find the property, examine the applications associated with it.
Look beyond the most recent decision. Earlier applications may contain important information about previous extensions, changes of use, alterations or refused proposals.
Pay attention to whether applications were:
- Approved.
- Refused.
- Withdrawn.
- Approved subject to conditions.
- Granted on appeal.
- Submitted retrospectively.
A previous refusal may also reveal planning constraints that could affect future proposals.
Step 4: Download the Decision Notice
The decision notice is one of the most important documents to review.
It records the local planning authority’s formal decision and explains whether permission was granted or refused. Where permission was granted subject to conditions, the notice identifies those requirements.
Read the conditions carefully rather than assuming that approval gives the owner unrestricted freedom to carry out the development.
Some conditions must be satisfied before work begins, while others may apply throughout the lifetime of the development or restrict how the property can be used.
Step 5: Compare the Approved Plans With the Existing Property
A planning approval does not necessarily mean that the development was completed in accordance with the permission.
Compare the approved drawings with the property’s current layout and external appearance.
Look for differences involving:
- Building dimensions and height.
- Extension positions and roof designs.
- Window and door locations.
- External materials.
- Parking and access arrangements.
- Boundaries and landscaping.
If the completed development differs materially from the approved scheme, further investigation may be needed to establish whether the changes were separately authorised.
Step 6: Check for Planning Conditions and Enforcement Notices
Planning conditions can impose continuing obligations or restrict how a property is used.
You should also check the local authority’s enforcement register for formal notices affecting the site.
In England, councils are required to maintain a register of specified enforcement and stop notices, including enforcement notices, breach of condition notices, stop notices and Planning Enforcement Orders.
However, not every planning enforcement investigation will appear on the formal register. If there are concerns about unauthorised development, consider contacting the local planning authority for further information.
Step 7: Investigate Planning Constraints Affecting the Property
Planning permission is not the only factor that determines what can be done with a property.
Certain designations and restrictions may affect development opportunities even where there is no previous refusal.
Depending on the location, investigate whether the property is:
- In a conservation area.
- A listed building.
- Within a Green Belt or other protected area.
- Subject to a tree preservation order.
- Near protected habitats or heritage assets.
- Affected by flood risk or other environmental constraints.
These restrictions may require additional consent, specialist assessments or a different approach to development.
What Documents Should You Look for When Checking Planning Permission?
A thorough review involves more than finding an approval notice. Different documents provide different pieces of information about the property’s planning position.
| Document | What it tells you |
|---|---|
| Planning decision notice | Whether permission was granted or refused and any attached conditions. |
| Approved drawings | The plans and specifications against which the development was approved. |
| Planning application form | Details of the proposal, applicant and site. |
| Officer’s report | The planning authority’s assessment and reasoning behind its decision. |
| Planning conditions | Requirements and restrictions attached to the permission. |
| Appeal decision | The outcome and reasoning where an application or enforcement matter was appealed. |
| Enforcement notice | Formal action taken in response to an alleged breach of planning control. |
| Lawful development certificate | Whether an existing or proposed use or operation is lawful for planning purposes. |
Where important documents are missing from the online register, contact the local planning authority to ask whether archived records or copies are available.
Can You Check Planning Permission Without the Property Owner’s Consent?
Yes. Planning applications and decisions are generally public records, and members of the public can search the relevant local authority’s planning register without obtaining the property owner’s permission.
This is particularly useful for prospective buyers, neighbours, developers and investors who want to understand a property’s planning history before making a decision.
However, access to public planning records does not mean that every aspect of a property’s legal or planning position can be established through an online search alone.
Some historic records may be incomplete, and certain enforcement investigations may not appear on public registers.
Does Planning Permission Automatically Transfer When a Property Is Sold?
In general, planning permission attaches to the land rather than the individual who originally applied for it.
This means that a valid planning permission can usually benefit a new owner after the property is sold.
However, the buyer should not assume that every permission can still be implemented.
It is important to establish:
- Whether the permission remains valid.
- Whether development has lawfully commenced where necessary.
- Whether pre-commencement conditions have been discharged.
- Whether the approved scheme has been amended.
- Whether the permission is subject to personal or other specific restrictions.
A buyer should also investigate whether the development has been completed in accordance with the permission and whether any outstanding conditions remain.
What If You Cannot Find Planning Permission for a Property?
Not finding a planning application online does not automatically mean that a property or its alterations are unauthorised.
There are several possible explanations.
The work may have been carried out under permitted development rights, which allow certain types of development without a full planning application, subject to specific limitations and conditions.
The permission may also predate the council’s digital records, or the application may have been recorded under a different address or reference.
Alternatively, the work may have been carried out without the required permission.
Where the planning history is unclear, consider the following steps:
- Contact the local planning authority and request a search of its historic planning records.
- Ask whether the property has any recorded enforcement notices or relevant planning investigations.
- Compare the existing development with available historic plans and documents.
- Establish whether permitted development rights could have applied.
- Consider whether a certificate of lawful existing use or development may be appropriate.
A Lawful Development Certificate can provide formal confirmation of the lawfulness of an existing use or development, where the statutory requirements are met. It is not a substitute for planning permission where permission was required and the development remains unauthorised.
Is Checking the Planning Register Enough When Buying a Property?
A planning register search is a valuable starting point, but it should not be treated as a complete property due diligence exercise.
Where a purchase involves significant development potential, previous alterations or commercial use, a more detailed investigation may be necessary.
A buyer may need to consider a local authority search, review the planning history with a planning professional and obtain legal advice where there are concerns about unauthorised works or outstanding enforcement matters.
It is also important to distinguish planning permission from building regulations approval. Planning permission deals with the acceptability of development in planning terms, while building regulations address technical standards relating to matters such as structural safety, fire safety, energy efficiency and accessibility.
A property may have planning permission but still lack the necessary building regulations approval, or vice versa.
Frequently Asked Questions About Checking Planning Permission
How do I check if a property has planning permission?
Visit the website of the local planning authority responsible for the property and use its online planning register. Search by address or postcode, then review the application history, decision notices, approved plans and planning conditions.
Can I check planning permission using just a postcode?
Yes. Many local authority planning portals allow searches using a postcode. However, you may need to narrow the results using the property number, street name or map search.
Are planning permission records available to the public?
Yes. Local planning authorities in England maintain public registers of planning applications and decisions. Many provide online access to application documents and decision notices.
How far back can I check a property’s planning history?
This depends on the local authority and the availability of its archived records. Some councils provide online records going back several decades, while older documents may only be available through a separate archive request.
Does a planning permission search show building regulations approval?
No. Planning permission and building regulations approval are separate regulatory processes. You may need to contact the relevant building control authority or inspect the property’s building control records to establish whether the required approval was obtained.
What happens if a property has been extended without planning permission?
The consequences depend on whether permission was actually required, whether permitted development rights applied and the circumstances of the work. If the development is unauthorised, the local planning authority may investigate and take enforcement action. In some circumstances, a retrospective planning application or lawful development certificate may be appropriate.
Can I check planning permission before buying a house?
Yes. Searching the planning history before purchasing can help identify previous refusals, conditions, enforcement action and restrictions that may affect future development. For a significant purchase, this should form part of a wider legal and planning due diligence process.
Make Informed Property Decisions With the Right Planning Advice
Checking planning permission is an important step in understanding a property’s development history and future potential. Whether you are purchasing a home, investing in commercial property or considering an extension or change of use, reviewing the relevant planning records can help identify restrictions and potential complications before they become costly problems.
However, where records are incomplete, previous works appear inconsistent with approved plans or enforcement concerns arise, a more detailed assessment may be necessary.
Contact Charrette Law to discuss your planning and property-related requirements and establish whether its services are suitable for your circumstances.
