About the Planning System

Your local planning authority (LPA) – usually the district or borough council – is responsible for deciding whether a proposed development should be allowed to go ahead. This is called planning permission.

Most new buildings, major alterations to existing buildings and significant changes to the use of a building or piece of land need this permission.

However, certain minor building works – known as permitted development – don't need planning permission. This is because the effect of such developments on neighbours or the surrounding environment is likely to be small – e.g. building a boundary wall below a certain height. Similarly, a change of land or building use is classed as permitted development if it's within the same use class. Visit our section on use classes

Other areas get special protection against certain developments. Reasons for special protection include:

• Protect attractive landscape – e.g. national parks
• Protect interesting plants and/or wildlife
• Control the spread of towns and villages into open countryside – e.g. Green Belts
• Protect monuments or buildings of historical or architectural interest

Occasionally, large proposals or controversial applications of national significance are 'called in' to be decided by the First Secretary of State instead of the LPA.

Please note that Building Regulations approval is a separate matter from obtaining planning permission for your work. Learn more about the difference between Planning Permission and Building Regulations¹.

1. https://www.planningportal.co.uk/wales/do-you-need-permission/your-responsibilities/building-regulations/difference-between-building-regulations-and-planning-permission