Given the number of questions already posed on project boundaries, I hesitate to post this, but I'm still stumped. 

Our projects has 3 towers (1 hotel/residential at 88 floors, 1 office at 36 floors, 1 residential at 34 floors) sharing a common above ground retail podium and below ground basement parking area.

The client would like:

1) Three different certifications for the three towers (2 different levels of LEED for 2 towers and Singapore's GreenMark for the third tower). But, the retail podium would be included in the certification of the largest tower. 

2) One tower to have a different certification for the residential component vs the hotel area use. 

For the first item, I see that a common underground parking area can be divided amongst the different above ground use areas to serve their different occupants. Even though the retail podium separates the towers from their parking areas, I think they can still be linked (towers and parking) just like a disconnected horizontal ground level parking area. So each tower could have a separate certification as long as the related support basement areas are included. 

For the second item, I see two potentially contradicting lines in the MPR guidelines. These are "The LEED project should include the complete scope of work of the building or interior space" and "The LEED project can be delineated by ownership, management, lease, or party wall separation." I suppose if the residential component of the 88 floor tower has a distinct enough scope of work  then this sub-area which represents about 1/2 of the tower gfa could be certified separately. Additionally, if there is separate management for the residential component of the building or the leases are taken into account, then these could also support a distinct certification for the residential component of the large tower. 

Does my assessment make sense and comply? 

Thanks very much, 

Doug Snyder, LEED AP

Hanoi, Vietnam