... space. The realannual rent for A is $20,000, or $60,000 for the life of the lease. The real annualrent for B is $21,870, or $65,610 for the life of the lease.Next, Tom checks on whether eitherlandlord ... for usable space but also for some or all of the thickness of the walls.If you’re comparing two properties, andone landlord includes wall thickness in the square-foot figure but the other doesn’t,you’ll ... compensate them for the unrented common areas, Building A jumpedto $24.00 per square foot. But look whathappened to Building B—when the lossfactor and the adjustment for the thicknessof the walls...