Some types of development do not require specific Planning Permission. This is referred to as Permitted Development (as specified by the Town and Country Planning (General Permitted Development) Order 1995).
The most common examples of Permitted Development are small extensions to existing dwellings, garden sheds, greenhouses, fences and walls of a specified maximum height.
Guidance on rules that relate to permitted development are provided on the Planning Portal website, to view this guidance please click here.
For further information on whether you will need to apply for planning permission, please read the Permitted development for householders - technical guidance and information by clicking here (PDF, 269KB, 48 pages).
Whether development requires specific Planning Permission or otherwise, often depends on the size, position and height of the proposed building and other works. In the case of an existing dwelling, it is important to consider if the property has been previously extended and by how much.
If you would like to formally clarify whether your proposal is permitted you can apply for a Lawful Development Certificate for a Proposed Use or Development online via the Planning Portal website, download a copy of the application form by clicking here (PDF, 205KB, 4 pages) or visit our offices to obtain a copy of the application form.