One lump or two?

An inspector did not sugar-coat his finding that a planning authority had been correct to refuse a lawful development certificate for alterations and extensions to provide a loft conversion at a semi-detached house in north London (DCS Number 400-031-137).

There was no dispute that the different elements of the proposed development complied with all of the conditions and limitations associated with the relevant Classes of the GPDO. The only point of dispute, the inspector noted, was whether the appeal property comprised more than one dwellinghouse. He explained that this was relevant because Part 1 of the GPDO relates to “Development within the curtilage of a dwellinghouse”.

The inspector observed that there was a single storey side and rear extension attached to the original dwelling. According to the planning history, planning permission had been granted for a “Single storey side and rear extension including the formation of a new front entrance to accommodate new self-contained flat”.  Accordingly, the inspector found that the site comprised two dwellings, namely the original dwelling and a separate dwelling described as a self-contained flat. The development could not comprise permitted development, he ruled. 

The permitted development classes are set out at section 4.342 of DCP Online.