RICHARDSON, TX-After receiving approval from the US Bankruptcy Court in Delaware earlier this year to dispose of its US headquarters campus, Nortel Networks Corp. has finalized the sale of the two-building property. Dallas-based Pillar Commercial acquired the 17.5-acre campus for $43.l million, according to court documents.

Toronto-based Nortel filed for Chapter 11 in 2009. The sale of its campus, located at 2201-2221 Lakeside Blvd. in Richardson’s Telecom Corridor, is one of the final pieces of its global liquidation. The campus includes a 16-story office building plus a research and development facility.

Pillar Commercial, which specializes in repositioning underperforming investment properties, was one of several potential buyers for the property, which was built in 1991. The acquisition, which totals more than 800,000 square feet, marks the firm’s largest purchase since it was formed in 2004.