This KBCN has been withdrawn and is no longer valid.
This is because its content was changing the criteria of the technical manual.
Guidance on daylight requirements and floor area calculations can be found in KBCN0471.
KBCN withdrawn on 08/01/2021:
The minimum values of average daylight factor required for residential dwellings apply to 100% of the relevant areas ('kitchen' and 'living rooms, dining rooms, studies - including home offices'). This is in alignment with the 100% requirement applicable to residential dwellings with regards to illuminance requirements (average illuminance and minimum point illuminance).
The technical manual currently has an error and only presents this as 80%.
