I am trying to guide a client for LEED  certification. It is for a work-clothes factory with administration, showroom, storage facility etc. The house has been in service for a year now and there are plans for extension of the storage facilities as we speek. I guess a LEED O+M certification is in place but what about the extension to the existing facilities, can it be incorporated in a LEED O+M certification or what are the other options?