History
Mark started selling real estate in 1993, and quickly became the #1 agent at Lois Seiden Real Estate, Inc. When the agency sold in 1997, he went on to become the #1 agent at Coldwell Banker Residential Brokerage in Westchester County for six consecutive years (1997-2002). In 2003, Mark established The Mark Seiden Real Estate Team, becoming the top listing agent in Westchester County in 2010. Mark's key to success is having a steadfast determination to excel, allowing him to take the industry by storm. Challenged by traditional business models, he refuses to settle for the standard,