MASTER BROKER LISTING: As reported yesterday by The Real Deal South Florida, Master Brokers Forum member John Reza Parsiani is listing the $27M Coral Gables estate of Grammy-winning singer-songwriter Marc Anthony (article link below.) The 12-bedroom, 21,000-square-foot, three-story mansion at 300 Costanera Road is a 1.3-acre corner property with 480 feet of waterfront.