Building without planning permission can create legal, financial and practical challenges for property owners, developers and contractors. Depending on the nature of the development, the location of the property and the applicable planning rules, unauthorised building work may lead to enforcement action by the local planning authority.
Whether you are planning a new extension, constructing an outbuilding or have already completed building work without obtaining the necessary consent, understanding your legal position is essential. Some developments benefit from permitted development rights, while others require express planning permission before work begins.
Charrette Law provides planning-related guidance to property owners and developers seeking to understand planning requirements, address potential breaches and explore appropriate routes towards compliance in the UK.
What Does Building Without Planning Permission Mean?
Building without planning permission generally refers to carrying out development without obtaining the consent required under the applicable planning legislation. In England, planning permission requirements are primarily governed by the Town and Country Planning Act 1990 and associated regulations.
Not every building project requires planning permission. Certain works may fall within permitted development rights, which allow specified types of development to proceed without a separate planning application, provided the relevant conditions and limitations are satisfied.
However, where permission is required and has not been obtained, the work may constitute a breach of planning control.
Examples of building work that may require planning permission include:
- Constructing a new house or other substantial building.
- Building an extension that exceeds permitted development limits.
- Constructing certain outbuildings or detached structures.
- Making significant alterations to a building’s external appearance.
- Developing land in a conservation area or another specially regulated location.
- Carrying out work that does not comply with an existing planning permission.
Planning permission is separate from building regulations approval. A project may require one, both or neither, depending on the work involved. Meeting building regulations requirements does not automatically resolve a planning permission issue.
When Is Planning Permission Required for Building Work?
Whether planning permission is required depends on the type, size, location and intended use of the proposed development. The local planning authority can provide information about the planning requirements that apply to a particular site.
New Buildings and Residential Developments
Constructing a new house, block of flats or other substantial building will generally require planning permission. The application process allows the local planning authority to assess factors such as design, access, neighbouring properties, environmental effects and consistency with local planning policies.
Extensions and Home Improvements
Some home extensions and alterations may qualify as permitted development. However, restrictions can apply to the height, size, position and appearance of the proposed work.
An extension that exceeds the relevant limits or fails to satisfy the applicable conditions may require planning permission.
Outbuildings and Garden Structures
Sheds, garages, garden rooms and other outbuildings may fall within permitted development rights in certain circumstances. The rules can depend on the building’s height, position, intended use and proximity to boundaries, as well as whether the property is in a specially regulated area.
Property owners should check the applicable requirements before construction begins.
Listed Buildings and Conservation Areas
Properties in conservation areas and other designated locations may be subject to additional planning restrictions. Listed building consent may also be required for works affecting the character of a listed building.
Obtaining planning permission alone does not necessarily satisfy other consent requirements, so the relevant restrictions should be checked before undertaking work.
What Are the Risks of Building Without Planning Permission?
Building without the required planning permission can have consequences for the property owner, developer or person responsible for the work. The nature of the consequences depends on the circumstances and whether the local planning authority decides to take enforcement action.
Planning Enforcement Action
A local planning authority may investigate suspected unauthorised development and, where appropriate, issue an enforcement notice requiring specified steps to remedy the breach.
Depending on the circumstances, the notice may require alterations to the building, removal of an unauthorised structure, restoration of land or cessation of an unauthorised use.
Additional Construction and Remedial Costs
If the development does not receive retrospective planning permission, the owner may need to modify or remove some or all of the work. This can create additional costs for labour, materials, professional advice and project delays.
Prosecution and Financial Penalties
Failure to comply with certain effective enforcement notices can constitute a criminal offence. Depending on the circumstances, prosecution and financial penalties may follow.
It is important to distinguish between the initial planning breach and a separate offence arising from non-compliance with an enforcement notice.
Difficulties When Selling a Property
Unauthorised building work can complicate a property sale. Buyers and their solicitors may ask for planning records, approvals or evidence that the development is lawful.
Unresolved issues may lead to additional enquiries, negotiations, delays or difficulties securing a transaction.
Impact on Future Development
Unauthorised work may also affect future planning applications or proposed alterations. The local planning authority may consider the existing development when assessing further proposals, depending on the relevant planning circumstances.
Can You Get Retrospective Planning Permission for Building Without Permission?
In some circumstances, property owners can apply for retrospective planning permission after building work has already taken place. This allows the local planning authority to assess the completed development against relevant planning policies and other material considerations.
A retrospective application may be suitable where the development is capable of being accepted in planning terms, although approval is not guaranteed.
How a Retrospective Planning Application Works
The process generally involves:
- Reviewing the existing development and establishing whether planning permission was required.
- Preparing the relevant application forms, drawings and supporting information.
- Submitting the application to the local planning authority.
- Allowing the authority to assess the development against relevant planning policies and other considerations.
- Responding to any requests for additional information and reviewing the authority’s decision.
The authority may grant permission, grant permission subject to conditions or refuse the application.
What If Retrospective Planning Permission Is Refused?
If an application is refused, the available options depend on the reasons for refusal and the circumstances of the development.
These options may include revising the proposal, submitting a further application, appealing the decision where appropriate or considering whether alterations are necessary to address the planning concerns.
Where enforcement proceedings are already underway, it is important to understand how the application interacts with the notice and any applicable deadlines. Submitting a retrospective application does not automatically suspend enforcement action.
How Long After Building Without Planning Permission Can Enforcement Action Be Taken?
Planning enforcement time limits depend on the type of development, when the breach occurred and the applicable legislation.
In England, changes to planning enforcement time limits took effect on 25 April 2024. The general framework includes:
- Four years: Relevant operational development substantially completed before 25 April 2024.
- Four years: Certain unauthorised changes of use to a single dwellinghouse that took place before 25 April 2024.
- Ten years: Relevant operational development substantially completed on or after 25 April 2024.
- Ten years: Other breaches of planning control, including many changes of use.
Exceptions can apply, including provisions relating to deliberate concealment and further enforcement action. Property owners should not assume that building work is immune from enforcement simply because it has existed for a particular number of years.
The applicable rules also differ across England, Wales, Scotland and Northern Ireland. Establishing the property’s location, the type of development and the date the work was completed is therefore important when assessing potential enforcement risks.
What Should You Do If You Have Already Built Without Planning Permission?
If you have completed building work without obtaining the necessary planning permission, taking early steps to establish your legal position can help you understand the available options.
Establish Whether Planning Permission Was Required
Review the nature of the work, the property’s location and any applicable permitted development rights. Some projects do not require express planning permission, although other restrictions or consent requirements may apply.
Gather Planning Documents and Evidence
Collect any existing planning permissions, approved drawings, building records, photographs and correspondence with the local planning authority. These documents can help establish what was built, when it was completed and whether the work complied with relevant requirements.
Contact the Local Planning Authority Where Appropriate
Depending on the circumstances, contacting the local planning authority may help clarify the status of the development and the requirements for resolving the matter. Consider obtaining professional advice before responding to formal enforcement correspondence.
Explore the Available Legal and Planning Options
Depending on the facts, possible options may include applying for retrospective planning permission, obtaining a lawful development certificate where the relevant criteria are met, modifying the building or challenging an enforcement decision through the appropriate procedure.
Seek Professional Planning Advice
A planning consultant or solicitor with relevant experience can assess the planning history, explain the applicable requirements and help you consider the potential implications of each option.
How Charrette Law Can Help With Building Without Planning Permission
Building without planning permission can raise questions about planning compliance, enforcement procedures, retrospective applications and the legal status of a property.
Charrette Law provides planning-related guidance to property owners, developers and other stakeholders dealing with planning issues in the UK.
Depending on the circumstances, assistance may include:
- Reviewing planning permissions and related documentation.
- Assessing potential breaches of planning control.
- Explaining planning enforcement notices and compliance obligations.
- Exploring retrospective planning applications and other possible remedies.
- Providing guidance on planning appeal procedures.
- Helping property owners understand potential routes towards compliance.
Every situation requires an assessment of the relevant facts, planning history and applicable legislation. Early advice can help clarify the available options and identify the next steps for addressing unauthorised building work.
Frequently Asked Questions About Building Without Planning Permission
Can I Build Without Planning Permission in the UK?
Some building work can be carried out under permitted development rights without a separate planning application. However, these rights are subject to specific conditions and limitations. Property owners should establish whether their proposed development qualifies before starting work.
Can I Be Forced to Demolish a Building Without Planning Permission?
In certain circumstances, a local planning authority may issue an enforcement notice requiring an unauthorised structure to be removed or altered. Whether demolition is required depends on the nature of the breach, the requirements of the notice and the available legal options.
Can I Get Retrospective Planning Permission for an Extension?
Yes, a retrospective planning application may be possible for an extension built without the required permission. The local planning authority will assess the development against relevant planning policies and other material considerations. Approval is not guaranteed.
Does Building Regulations Approval Mean My Building Is Legal?
No. Building regulations approval and planning permission serve different purposes. A building may comply with building regulations but still require planning permission. Similarly, planning permission does not automatically demonstrate compliance with building regulations.
Can I Sell a House That Was Built Without Planning Permission?
A sale may still be possible, but unauthorised development can create conveyancing complications. Buyers and their solicitors may request further information about the planning status of the property, any enforcement action and the available options for resolving outstanding issues.
Get Professional Advice on Building Without Planning Permission
Building without the required planning permission can have consequences for property ownership, development costs and future transactions. Understanding the applicable planning rules and identifying the appropriate route towards compliance can help property owners make informed decisions.
Charrette Law can provide planning-related guidance to help you understand your obligations, assess potential enforcement concerns and explore suitable options for your property or development.
Contact Charrette Law to discuss your planning concerns and obtain guidance relevant to your circumstances.
