I am working on a new construction of a hospital building on a site where a new MOB and a shared parking garage will be also constructed.

The owner is pursuing LEED certification for the hospital but not for MOB. Regarding to the project boundary, I assume the MOB will be excluded from the LEED project area since the MOB is not in part of the LEED project scope. How about shared parking lots and shared parking garage? Do I include 100% of the parking spaces to the project boundary?
The surface parking lots and the parking garage will be used by the building users from both buildings.
Any information you can provide me would be greatly appreciated