An unidentified California investor purchased University Business Center and two flex commercial buildings at Promontory Point in Austin. The 114,910-square-foot University Business Center, which includes five buildings, is located at 3019 Alvin Devane Blvd in Southeast Austin. The properties at Promontory Point encompass 50,000 square feet at 2621 Ridgepoint Drive. The sellers were not disclosed. St. Croix Capital Realty Advisors LLC represented the buyers, who also purchased an office building in Midland, Texas. Total value, according to Ken Satterlee of St. Croix, was $60 million.