Former Citigroup executive Mark Rufeh just sold his bayfront home in Key Biscayne for $11.1 million to an unidentified buyer. The deal for the 2,561-square-foot home at 398 Harbor Drive breaks down to about 4,300 per square foot. The waterfront house, built in 1952, sits on a 20,933-square-foot, meaning the land traded for about $530 per square foot. Property records show that Rufeh, who previously served as a managing director and co-head of Citigroup’s global ... [more]