If a fire or other casualty causes substantial damage to the Building or the Premises, Landlord shall engage a registered architect to certify, within one (1) month of the casualty, to both Landlord and Tenant the amount of time needed to restore the Building and the Premises to tenantability, using standard working methods. If the time needed exceeds twelve (12) months from the beginning of the restoration, or two (2) months therefrom if the restoration would begin during the last eighteen (18) months of the Term, then in the case of the Premises, either Landlord or Tenant may terminate this lease, and in the case of the Building, Landlord may terminate this Lease, by notice to the other party within ten (10) days after the notifying party’s receipt of the architect’s certificate. The termination shall be effective thirty (30) days from the date of the notice and Rent shall be paid by Tenant to that date, within an abatement for any portion of the space which has been untenantable after the casualty.