Building regulations and planning permission “My garden and my rules” is unfortunately not exactly the way it works with setting up a summer house or any other building in your garden. Whether you need to apply for a planning permit or not depends on the size and height of the building, ways of use, location in the garden and other details. There are two sep… More on this story here.
https://www.eurodita.com/10-useful-tips-about-wooden-summer-houses-and-sheds-for-gardens/