The largest of the vulnerable properties are a 450,000-sf building at 11601 Roosevelt Blvd., and a 250,000-sf one at 11501 Roosevelt Blvd. Four others are adjacent properties spanning from 11620 to 11631 along Caroline Road. They range in size from 70,000 sf to 50,000 sf. The seventh building aggregates 46,000 sf at 9815 Blue Grass Road.

The buildings date back to the 1960s and "most of them were originally warehouses that have been modified and enhanced over the years for use by the IRS," the spokesperson says. They are owned by different private entities. The specific leases and the aggregate amount of space that will not be renewed are yet to be determined. IRS administrative jobs unrelated to paper processing will remain in Philadelphia, but require less than half the current space and will not necessarily remain in the buildings already leased here by the government agency.

The timing of all components of the IRS transition here has not yet been determined, says the GSA spokesperson. However, an IRS spokesman in the local office tells GlobeSt.com that the IRS paper processing operation will conclude here in September 2007.