KristyFerrel549
The idea behind the changes to the planning laws was to reduce the pressure on local planning departments by allowing many domestic extension projects to proceed under 'permitted development' rather than having to apply for planning permission. This means that certain types of work, such as many loft conversions and extensions, do not require planning permission. To understand how the law has changed, it is necessary to briefly examine the position prior to 1 October 2008.
The previous legislation governing permitted development for London loft conversions was the Town and Country Planning (General Permitted Development) Order 1995. This established a system of allowing homeowners to develop their property by a certain volume depending on the type of house. For instance, a terrace house could usually develop by up to 50 cubic metres (40 of which could be used for a mansard or dormer loft conversion) and a semi- detached or detached house by 70 cubic metres (50 of which could be used for a dormer or mansard loft conversion). This effectively meant that any house with an existing large ground floor extension would have already used most of its permitted development volume and could not undertake a loft conversion in London.
