[PART B] executes the additional space within  days of receipt of notification from [PARTY B] to rent additional space, make an endorsement or new lease for the additional space [PARTY A], and another very common reason for using this clause is the conclusion of a difficult transaction with a large tenant. For example, if you`re trying to lease the floor of an office building, but you can`t close the store without offering that right to the tenant, you may never be able to close the deal. You may be wondering what makes it a “rejection” in this clause. If you use this form, be sure to fill in all the information in depth so that all parties are fully and equally informed. With the right form and circumstances, including the right of pre-emption, a good business decision can be made. .