In the case of studio flats, where there are no separating walls between occupied spaces, the minimum area of compliance for the average daylight factor requirement is based on the combined area of kitchen, living room, bed and study area. The required daylight factor for the open-plan space (subject to percentage requirement) should be based on the highest daylight factor required for any of the spaces.
It is impractical to separate the open-plan space and assess the daylight according to notional lines. In order to maintain robustness, the highest daylight factor should be applied throughout.
