Planning. Permitted Development Whilst it is not possible to construct sleeping accommodation as an outbuilding under PD without express planning permission, it is possible to utilise an existing outbuilding for sleeping accommodation so long as any such accommodation is for the use and enjoyment of the home as a single dwelling Government Guide http://www.planningportal.gov.uk/permission/commonprojects/extensions/ Greenhouse No point of the building is less than one and a half times its height from any point of a building which contains sleeping accommodation Conservatory less than 30 sq m, INSULATION: Part N of Schedule 1 Garage conversion http://www.planningportal.gov.uk/permission/commonprojects/garageconversion Glass Height by boundary Max 2.5 m http://www.homebuilding.co.uk/feature/20-things-you-can-do-no-planning-required Your two storey extension must not exceed 3m in depth or be within 7m of the rear boundary Outbuildings You can construct all sorts of outbuildings for the use and enjoyment of the home so long as they do not cover more than 50% of the garden space Side ext half width Side extensions to be single storey, no more than half the width of the original house and max. height of 4m       2012 February          Vr.2