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His Royal Highness The Duke of Edinburgh, 10 June 1921 to 9 April 2021

Read about the arrangements following The Duke of Edinburgh’s death

You’ll probably need planning permission to:

  • erect a new building
  • make a major change to an existing building
  • change the use of an existing building

Permitted development rights apply to some projects and may mean that planning permission is not required.

On Planning Applications Wales