Rent Commencement Date The "Rent Commencement Date" shall be the date that Tenant first uses the Premises or any portion thereof for any purpose permitted under this lease. In the event this lease pertains to a building or building interior finish to be constructed, the "Rent Commencement Date" shall be the date upon which the buildings and other improvements erected and to be erected upon the premises shall have been substantially completed in accordance with the plans and specifications described on Exhibit "C" attached hereto and incorporated herein by reference, provided however, that if Landlord shall be delayed in such substantial completion as a result of: (i) Tenant's failure to agree to plans, specifications, and cost estimates, within a reasonable period of time; (ii) Tenant's request for materials, finishes or installations other than Landlord's standard; (iii) Tenant's changes in plans; the commencement date and the payment of rent hereunder shall be accelerated by the number of days of such delay, and provided further that if Landlord cannot substantially complete the premises as a result of any events (i) through (iii) above, Landlord may as its election complete so much of Landlord's work as may be practical under the circumstances and, by written notice to Tenant, establish the commencement date as the date of such partial completion, subject to any applicable accelerations due to delays resulting from events (i) through (iii) above. Taking possession by Tenant shall be deemed conclusively to establish that said buildings and other improvements have been completed in accordance with the plans and specifications and that the premises are in good and satisfactory condition, as of when possession was so taken. Tenant acknowledges that no representations as to the repair of the premises have been made by Landlord, unless such are expressly set forth in the lease. After such "Rent Commencement Date" Tenant shall, upon demand, execute and deliver to Landlord a letter of acceptance of delivery of the premises. In the event of any dispute as to substantial completion of work performed, execute or required to be performed by Landlord, the certificate of Landlord's architect or general contractor shall be conclusive.
