Development is defined in planning legislation as ‘the carrying out of building, engineering, mining or other operations in, on, over or under land or the making of any material change in the use of buildings or other land or the operation of a marine fish farm …’.
Planning permission is required for most development. However some minor works can be carried out without applying for Planning Permission.
For example, if you are looking at making changes to your house you may be able to carry out some works under Permitted Development (Opens in a new window or downloads a file). This means you would not require to apply for planning permission but you may still require a Building Warrant.
You can use the flowcharts (Opens in a new window or downloads a file) to help you understand when planning permission may or may not be required.
Always seek professional advice or seek guidance if you are unsure.