United States, Jan. 26 -- JLL Capital Markets announced that it has closed the sale of 601 Jefferson, a 1,047,748-square-foot office tower in Houston's Central Business District.JLL represented the seller, Net Lease Office Properties, in the sale of the property to Namdar Realty Group.Originally built in 1973, 601 Jefferson stands 42 stories tall and offers flexible floorplates and abundant on-site parking in the adjacent 701 Jefferson St. garage, which was also included in the offering. The property is 92% leased and anchored by KBR, which occupies close to 90% of the building.The office tower and the parking garage comprise 2.94 acres in total in the southern portion of downtown Houston. 601 Jefferson is just a few blocks from Interstate ...