We are doing a HC project that has two visually separate buildings, main clinic building and a CUP building, but these two buildings' basements are connected. We are thinking using DES Guidance Performance Option 2 to obtain higher energy scores. The mechanical rooms and control room are in CUP building's above-grade floors, its basement is a part of the main building's clinical space.

However, we are not sure if we want to certify the CUP buildings. Are we allow to exclude CUP building from the LEED boundary, but still include its basement? Because it seems that in DES Guidance it allows CUP building not to be certified.

Please help, cheers.