Transwestern to Lease the 40-Story KBR Tower in Downtown Houston’s Cullen CenterRealty News ReportMarch 7, 2016 by Realty News ReportMarch 7, 2016 HOUSTON – Transwestern will lease the 40-story KBR Tower and the 20-story 500 Jefferson buildings in downtown Houston. Combined, the two buildings have 1.4 million...