WMC Mortgage Corp, a wholesale, non-prime lender, recently subleased 24,852 square feet from IBM Corp. on the 5th floor of Colonnade III at 15305 Dallas Pky in Addison, TX for its wholesale regional processing center. The 16-story, 377,639-square-foot Class-A office tower is owned by Equity Office Properties Trust . WMC expects to have a staff of 100 mortgage operations, sales and IT professionals and will ultimately hire between 250 to 300 employees from the local Metroplex job market. Susan McClure and Bill McClung from the Dallas office of Cushman & Wakefield and Carl Muhlstein from the Los Angeles office of Cushman & Wakefield represented WMC in the transaction. Brad Selner and David Cooke of The Staubach Co. represented sublessor IBM in negotiations.