Expansion Space Rider
Description: Approximately [number] square feet as outlined in Exhibit [exhibit number/letter].
Rent: [At the Base Rent applicable to the Premises/At the rate of $[amount] per month/[specify other rent]].
Exercise of Option: [At any time during the Term/[specify other time to exercise option]].
Prior Written Notice: At least [number] days before desired date of occupancy.
[Name of landlord]
[Name of tenant]