The project area has two main buildings that just one of them will apply for LEED v 2009 - NC certification. They are totally separate buildings in terms of air-conditioning systems but share the same landscape and parking lot. There are also relatively small buildings like a guard house and substation building which I can include in the LEED boundary as supporting buildings. However, we cannot decide how to determine the LEED boundary. Should it include the other main non-certifiable building or not? If not, how should the landscape area be divided?