Development Management SPD

[1]

The term principal window refers to windows which are the main source of light and outlook within a habitable room i.e. living rooms; dining areas; kitchen/dining/breakfast and bedrooms

[2]

or an option of applying an alternative Department for Communities and Local Government (DCLG) method based on a number of factors including car ownership levels, size and type of housing. For residential developments over 5 dwellings the Design Guide expects the DCLG method shall normally be applied .