The number of square meters that the tenant pays rent on under the lease agreement. For office and warehouse leases in Russia two systems are widely used for determining the Rentable Area: BTI and BOMA Measurement Standards. For retail leases in shopping centers the Rentable Area is equal to the Usable Area of the store. The BOMA 2010 standard for retail is often now being used in major shopping centers in Moscow. For street retail stores the Rentable Area is equal to the BTI area.