Do I need planning permission?
General advice
Most alterations and extensions to property and changes of use of land require planning permission. However, certain types of development are permitted without the need to make a planning application.
Good design

Extensions and alterations should be in scale and harmony with your house, with attention to detail such as window openings and matching materials. You should think about employing a skilled designer when preparing plans for extensions and alterations.
Changes
On 1 October 2008 changes to Householder Permitted Development Rights were introduced. A summary of the new legislation is available on the Planning Portal (opens in new window).