Daylighting – speculative building

Where the building is speculativeΒ and therefore the final layout is not defined (e.g. only an open plan shell is provided in each tenanted space), the required percentage of each open plan shell should meet the daylighting requirements. However, where it is possible to designate separable ancillary areas that would be required in the space (such as toilets or server room), these can be excluded from the calculation.

For daylight calculations in speculative projects where the layout and colours are unknown, a realistic notional layout may be used.