A source familiar with the deal says the Chicago-based Equity Office and JPMorgan Asset Management Holdings Inc. of New York City most likely felt the time was right to test the market with the class A assets. "They were full, they were stable and they were excellent assets," the source tells GlobeSt.com.

CarrAmerica Realty Corp., now a Blackstone holding, developed the eight-building Riata Corporate Park at 12357-65 Riata Trace Pkwy. and the five-building Riata Crossing at 12535-54 Riata Vista Circle between 1998 and 2008 in a 95-acre corporate park. The buildings are 98% leased to tenants like Apple Inc., Centex Corp., Nvidia Corp., Computer Associates Inc., Janus Capital Group Inc. and Pervasive Software Inc.

Apple, the lead tenant, leases more than 400,000 sf, representing 36.7% of the portfolio. Next is ACS at 210,000 sf, which leases about 19% of the class A office space. Leases of Janus Capital and Pervasive Software make up 8.4%. The average term remaining on the leases is five years.

Senior managing director Andrew S. Levy and managing director Todd W. Savage with Holliday Fenoglio Fowler LP's Dallas office represented the seller. The San Francisco-based buyer used in-house representation. Leasing and management assignments have yet to be determined.

According to HFF's marketing brochure, the 12 acres of development land are entitled for 112,716 sf in two buildings. The proposed additions are Riata Corporate Park 1 at 12301 Riata Trace Pkwy. and Riata Crossing 6 at 12544 Riata Vista Circle.