Landlord shall commence construction of the Tenant Improvements within ten (10) days following the later of (i) the approval of the Final Plans, or (ii) Landlord’s receipt of any necessary Permits. Landlord shall diligently pursue completion of construction of the Tenant Improvements and use its commercially reasonable efforts to complete construction of the Tenant Improvements as soon as reasonably practicable. Notwithstanding anything in this Lease or in this Work Letter to the contrary, Landlord’s Construction Allowance, as specified in Item 18 of the Basic Lease Provisions, shall be used only for the construction of the Tenant Improvements, and if construction of the Tenant Improvements is not completed on or before August 1, 2017 (“ Estimated Construction Completion Date ”), then Landlord’s obligation to provide the Landlord’s Construction Allowance, as specified in Item 18 of the Basic Lease Provisions, shall terminate and become null and void, and Tenant shall be deemed to have waived its rights in and to said Landlord’s Construction Allowance.