Stone Life Apr/May 2014 | Page 51

metres (1.8 metres at the centre under a sloping roof) and this often dictates where the new staircase can be positioned to ensure there is sufficient headroom. The ideal location is within the existing hall or landing area so space is not lost from existing rooms. ® • Planning permission Most loft conversions do not require a planning application providing the design complies with the rules for permitted development (these do not apply in ‘designated areas’ such as conservation areas or National Parks so always check with your local authority). The rules allow 50m3 of additional space to detached or semi detached house and 40m3 to a terraced house,