There are special controls over what requires planning permission in the Conservation Area and these have been strengthened by an Article 4 Direction which is in force. this means that planning permission is required for various minor external works which had previously been considered as 'permitted development'.

The following is not an exhaustive list, but an indication of the sort of works which do require planning permission:

• alterations or extensions to roofs including chimney stacks and pots;
• extensions to the original house that are over 50 cubic metres in size;
• garden sheds, garages or outbuildings over 10 cubic metres in size;
• enlargement, improvement or alteration to elevations fronting the street, including alterations to front doors or windows;
• demolitiion, alterations or erection of front boundary walls, fences, railings, gates or dustbin enclosures;
• painting of previously unpainted brickwork;
• cladding any part of the outside of building with render, pebble-dash, stone, timber, plastic or tiles;
• satellite dishes;
• creation of hardstanding fronting the street. 

If in doubt always ask the Planning Department first. Failure to obtain prior consent may involve owners in having to reinstate alterations, thus incurring extra cost. If your building is listed you will require prior listed building consent for internal and external alterations.