SAN ANTONIO-As part of a massive portfolio restructuring plan, Winthrop Realty Trust of Boston has sold the 261,663-square-foot One Riverwalk Place to local buyer USAA Real Estate Co. According to media reports in the seller's home town, the sale of the class A office building is helping to make way for acquisitions of other properties, many in the southwest.

One Riverwalk Place, at 700 N. St. Mary's, was developed in 1981. The transaction sales price was kept confidential, and the Bexar Central Appraisal District assesses the property at $19.6 million. Earlier this year, it was announced that CBRE was retained to help lease up the property, which was, at the time, 65% occupied.

As for seller Winthrop Realty, the Boston Business Journal writes that the sale is part of a large portfolio reshuffle. Other activities involved in the process include a buyout of partner Elad Canada Inc. for full control of the 942,000-square-foot Carson Pirie Scott & Co., a retail and office building at 1 S. State St. in Chicago.