We are working with a project that is not constructed yet (office building, Core and Shell). The building volume and facades have been decided, but the exact plan layout is not known yet, as the interior design will depend on the tenant.

We need to acquire Daylight credits, which requires that there is a defined “regularly occupied space”. We know that the regularly occupied spaces will be distributed on the perimeter of the floor plan, but we don't know whether they will be open plan or cell type. Which is the process that we must follow in order to specify a reasonable plan layout that is acceptable by LEED? For instance, could we make an assumption that the occupied space consists of cell offices across the perimeter of the floor plan, with a certain depth from the facade (3.6m)? We know that if the offices are eventually designed as open plan offices, this depth will be the same. 

Thank you in advance