As described elsewhere, we can provide an accompanying set of lease plans for any building we've surveyed, typically to ANSI/BOMA Standards, but of course we can calculate your lease areas based on any other "non-standard" method you specify. We recognize that many times you are dealing with existing leases, often with very specific wording in the lease as to method of measurement. We will always ask to see any such wording in your lease documents, to make sure our calculations are in accordance with your leases. All this means in practice is the lease specifies where we are to draw our lines with respect to inside/outside/center of walls when determining an area. If you tell us there is no wording in your lease, or you're dealing with new leases, our recommendation will be to follow the ANSI/BOMA 1996 Standards.