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.
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• 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,