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  1. Welcome to Planning Portal
  2. Do you need permission?
  3. Your responsibilities
  4. Planning Permission
  5. Failure to obtain or comply with planning permission

Planning Permission

Failure to obtain or comply with planning permission
  1. What is Planning Permission?
  2. Permitted Development Rights
  3. Lawful Development Certificates
  4. Retrospective planning permission
  5. Failure to obtain or comply with planning permission
  6. Factors affecting planning permission: Your neighbours
  7. Factors affecting planning permission: Design
  8. Factors affecting planning permission: Nature and wildlife
  9. Factors affecting planning permission: Environmental health
  10. Factors affecting planning permission: Roads and highways
  11. Factors affecting planning permission: Fire safety
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Failure to obtain or comply with planning permission

Planning breach

The failure to obtain planning permission or comply with the details of a permission is commonly known as a 'planning breach'.

A planning breach usually occurs when:

  • A development that requires planning permission is undertaken without the permission being granted - either because the planning application was refused or was never applied for
  • A development that has been given permission subject to conditions breaks one or more of those conditions.

A planning breach in itself is not illegal and the council will often permit a retrospective application1 where planning permission has not been sought.

However, if the breach involves a previously rejected development (or the retrospective application fails) the council can issue an enforcement notice requiring you to put things back as they were.

Your local planning authority can serve an enforcement notice on you when they consider you have broken planning control rules. Normally this will be because they consider what you are doing, or have done, is harmful to your neighbourhood.

The decisive issue for the local planning authority should be whether the breach would unacceptably affect public amenity or the existing use of land and buildings meriting protection in the public interest.

It is illegal to disobey an enforcement notice unless it is successfully appealed against. You can appeal against both refusals of permission and enforcement notices but if the verdict comes out against you and you still refuse to comply you may be prosecuted.


Things to consider

You may find it helpful to use the following third-party commercial service to plan your home improvement project:

  • Studio Charrette's planning consultancy calculator1

This link will take you to information about their services.

  1. https://www.planningportal.co.uk/permission/home-improvement/planning-consultancy-calculator

Useful links

Make an application (https://www.planningportal.co.uk/applications)

Make an application

Buy a site plan (https://www.planningportal.co.uk/planning/planning-applications/buy-a-planning-map)

Buy a site plan

Planning consultancy calculator (https://www.planningportal.co.uk/permission/home-improvement/planning-consultancy-calculator)

Planning consultancy calculator

Biodiversity net gain tool (https://www.planningportal.co.uk/permission/commercial-developments/biodiversity-gain-tool)

Biodiversity net gain tool
    1. https://www.planningportal.co.uk/permission/responsibilities/planning-permission/retrospective-planning-permission


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      The Planning Portal is delivered by PortalPlanQuest Limited which is a joint venture between TerraQuest Solutions Limited and the Ministry of Housing, Communities & Local Government (MHCLG). All content © 2025 Planning Portal.

      The Planning Portal is delivered by PortalPlanQuest Limited which is a joint venture between TerraQuest Solutions Limited and the Ministry of Housing, Communities & Local Government (MHCLG). All content © 2025 Planning Portal.