We have a pharmaceutical factory project consists of the following buildings: -
1. An administrative building (Ground + 3). 
2. A Production building (Ground +2).
3. A Warehouse building (Ground Level).
The three buildings are attached to each other. Three buildings are accessible from inside through internal doors.
There is a central chiller plant located in a utility building serving the three buildings all together. 
Can we certify only the administrative building?