Think your commercial landlord cannot change your annual rent? Think again! Some commercial landlords insist on lease provisions giving them the unfettered right to re-measure the square footage of the office space. Such clauses may provide, "The rentable square feet of the premises and the building are subject to verification from time to time by the landlord." Such clauses provide the landlord a unilateral right to re-measure tenants' office space any time. Of course, the landlord will likely "re-measure" only if it results in a rental rate increase.