Discuss the comparative costs to the landlord associated with renewing a current tenant, as compared to re-leasing that tenants premises after the lease expired and the tenant vacated. What might these costs be (list categories and speculate amounts), and what might your strategy be if the space were a 40,000 SF premises in a 200,000 sf class A CBD office building in Brooklyn, NYC or Washington, DC. Use CBRE or JLL market studies to formulate your responses or use the ULI Emerging Trends report for 2017