The mortgage is not included in the Common Area Maintenance.
Common Area Maintenance (CAM) expense is considered the expense for
taxes, insurance and maintenance and operation of the Common Areas
of a property including but not limited to, shared utilities,
community lighting, parking lot repairs, landscaping, etc. A
mortgage is not considered an operations expense. Leases will
usually specify what constitutes CAM charges reimbursable by the
tenant (lessee) to the owner (lessor).