Hotels-Campus guidance or LEED Interpretation 10203

Not for you (since a lot of time passed) but for others with such question - yes, it's possible to certifiy all this buildings as one according to LEED interpretation 10203, but one must be sure that all requirements of this interpretation are met: 1. The buildings included in the LEED certification must be a part of the same identity. For example, the buildings are all part of the same elementary school and not a mix of elementary school and high school buildings together in the same certification.

2. The project must be analyzed as a whole (i.e. in aggregate) for all Minimum Program Requirements (MPRs), prerequisites, and credits in the LEED rating system.

3. The buildings included in the LEED certification must share a common site/campus that can meet the requirements of MPR 3 for defining a single, shared, and reasonable site boundary, as explained in the LEED 2009 MPR Supplemental Guidance.

4. The submittal documentation for the certification of these projects must include all of the square footage for all of the buildings as well as all land area defined in the LEED project boundary.

5. There is no specific limit on the number of building structures but the total aggregate square footage of gross floor area that can be included in a single project shall not exceed 1 million.

6. Any single building structure in such a complex that is larger than 25,000 square feet must be registered as a separate project, or treated as a separate building in a group certification approach using the AGMBC. EXCEPTION: For LEED EBO&M group certification of K-12 schools, hospital (General Medical and Surgical), hotels, resorts, and resort properties projects with single building structures exceeding 25,000 square feet, a single Energy Star Rating may be used to document compliance with EA Prerequisite 2, and the AGMBC requirements for EA Prerequisite 2 do not apply. However, the AGMBC requirements do apply to building structures larger than 25,000 square feet for all other relevant credits and prerequisites described in the AGMBC.

What happens if I have two buildings with different functions, for example offices and hotels (owned by the same entity).  Are they considered part of the same identity?

No, since it's not an similar use and offices not fall under LEED Interpretation 10203.    It can only if it can be presented as one building/project. 

One of our current projects is a large resort.  We completed LEED-Campus for the Master Site, registered 6 buildings separately (three lodges, a ski lodge, signature restaurant, and a spa).  Buildings will be individually certified  The private residences are being certified under LEED-Homes.  Use of LEED-Hospitality has been helpful.