The amount of occupied space at the end of a period less the amount of space occupied at the beginning of the same period. Net absorption accounts for space vacated during the period as well as new additions (ex. new construction) over the applicable period.
Net absorption is calculated by using the formula of total vacant square footage at the start of a time period plus square feet constructed (or “brought online”) during the period, less square feet demolished or otherwise removed during the period less square feet vacant at the end of the time period. For example, if a market has 1,000,000 square feet of space and 50,000 square feet are leased while 20,000 square feet are vacated during the period and there is no new construction or demolition of existing properties, then the net absorption rate would equal 3.0% (50,000 sf leased less 20,000 vacated equals 30,000 sf net absorption divided by 1,000,000 sf total space).