Dear collegues,

We are in early design stage of multifunction building, with retail, offices and residential floors. We are trying to apply LEED requirements for water use, but it is not clear for me how to document or even propose fixtures and appliances in residential units. Those probably will be outside of GC/Investor scope, therefore will be dependant solely on furut user. In other instances leasing agreement might work, but in terms of residential I assume it is not possible to oblige anyone to enything. 

Should we then exclude such units from calculations, as they are not within the scope? Or should we assume baseline cases for the water use there? Would appreciate your opinion - residential part is significant as it is a little less than 50% of the building.