You will need planning permission if you want to alter a building, piece of land or a permanent structure (such as a wall) and you need to carry out building work to do it. You will also need planning permission if your work will change the way the building or land is used.
Apply for planning permission.
You will usually need planning permission to:
- build a new building
- extend or alter an existing building
- make changes to the way a building is used, for example turning a house into flats or making an industrial building into a home
- undertake engineering work or other works, such as sewerage
- demolish a building or structure
- carry out work on a listed building
- carry out work in a conservation area
- carry out work on protected trees or trees in a conservation area
- build new agricultural buildings
The Planning Portal Wales website has more information to help you find out what type of planning permission you need, including:
- Electronic applications for planning permission
- learn about the planning system
- find out about a development
- appeal against a planning decision
- research the latest government policy
- read and download help guide
- forms and other documents
Permitted developments where you don't need planning permission
There are some minor improvements, alterations and extensions you can make to your house that you don't need planning permission for. These can include construction of some types of porch, glass conservatories under a certain size and also some internal changes.
We call these permitted developments. You can get more advice about permitted developments and download an information booklet from the Welsh Assembly Government or from Planning Portal Wales.
Other ways to check if you need planning permission
If you are still unsure if you need planning permission, you can:
- get advice from planning consultants, who specialise in giving planning advice. You can search online for local consultants.
- check guidance from Planning Portal Wales website and the Gov.Wales - Permitted development rights for householders.
If you require advice, please see Pre application enquires.
