As president and CEO of Douglas Elliman Realty, Durkin oversees the nation’s fifth largest brokerage, which has nearly 7,000 agents who do approximately $42 billion in annual sales. The company has approximately 120 offices in 10 states. In 2023, Douglas Elliman and UK-headquartered Knight Frank affiliated with The Isles Group to enter the Bahamian luxury market, extending its international presence. Durkin joined Douglas Elliman as COO from the Corcoran Group in 2016.