A commercial lease can include virtually any other timeframe that the landlord and tenant agree to. In general, everything contained in a commercial lease is enforceable unless it is illegal or the time limit is too vague for a court to enforce. Exclusive use: The landlord must choose whether the tenant is allowed to use exclusively, which means that the tenant is the only party in that building to manage their type of business. An example would be to allow only one coffee shop in the Strip Mall. In the case of a full-service or gross lease agreement, the rental price includes all business expenses. Any operating costs or property taxes are already taken into account in the base rent. However, the landlord may expressly reserve the right to pass on future increases in operating costs to the tenant.