While planning permission is required for changes to the exterior of a building, including the installation of new windows or changes to existing windows, there are different types of planning permission. There’s the familiar, formal route where a local authority grants planning permission after a planning application. But, there’s also another type of planning permission where there has been a blanket national granting of permission by the government, which allows certain building works to be carried out without a formal planning application. These are known as Permitted Development or PD rights. So, what route do you take when it comes to windows?
