Do I need Planning Permission for a conservatory?

Small scale domestic extensions, including conservatories, do not require planning permission if the extension is to the rear of the house and comply with the following:

• The original floor area of the house is not increased by more than 40 square metres. It is important to note that where the house has been extended before, the floor area of the extension you are now proposing and the floor area of any previous extension, including those for which you got planning permission, cannot exceed 40 square metres;
• The Conservatory does not exceed the height of the house;
• The Conservatory does not reduce the area of private open space, reserved for the occupants of the house, to less than 25 square metres.

There is also a rule which states any windows proposed at ground floor level as part of an extension/Conservatory should not be less than 1 metre from the boundary they face. If you are planning a conservatory which will be within 1 Metre of the boundary wall then a solid wall rather than glass should be used in this instanceP