The transaction ranks as one of the largest office park sales in the Southeast. : In one of the largest office park sales in the Southeast, six institutional-quality properties in Huntsville, Ala., have sold for more than $80 million. Bluerock Real Estate was identified as the seller, according to Yardi Matrix data, while the buyer of the 1 million-square-foot collection of assets remained undisclosed. Transwestern Real Estate Services brokered the transaction, which included five assets within the Cummings Research Park, the second-largest research park in the U.S. and fourth-largest in the world, and a downtown Huntsville tower.