The federal government for the first time has released a trove of data showing how much of its footprint is being used — or not used — in close to real time. 
As mandated by a 2024 law, the 23 largest agencies measured the utilization rates of their leased and owned buildings between Jan. 12 and March 6. 
That data released Tuesday by the federal government’s real estate arm, the General Services Administration, shows that 9,766 government spaces, including offices and other properties, fell below a 60% utilization rate.