Available Sq. Ft.: Space in a building, ready for occupancy; can be occupied or vacant. Average Asking Lease Rate: A calculated average that includes net and gross lease rate, weighted by their corresponding available square footage. Building Area: The total floor area sq. ft. of the building, typically taken at the “drip line” of the building. Full Service Gross (FSG) Rate: The landlord assumes responsibility for all the operating expenses and taxes for the property. Gross Activity: All lease transactions completed within a specified time period. Net Absorption: The change in Occupied Sq. Ft. from one period to the next. Positive absorption is reflected when a lease is signed, which may not coincide with the date of occupancy. Rentable Area: The Building Area minus the elevator core, flues, pipe shafts, vertical ducts, balconies and stairwell areas. Vacant Sq. Ft.: Space that is not occupied.