Dormer extensions involve changes to the roof of a house. Planning permission will always be required for this type of work.
This type of extension needs careful consideration by the Council. In trying to maximise the space created, it is possible to create a dormer that totally dominates the existing house and is detrimental to the overall appearance of the street
Where possible, new dormers should be located to the rear of the property. They should be set back from the wall head and gables, and should be below the ridge line of the existing roof
If you intend to carry out this type of work you should now download and complete the appropriate application form.