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Madeleine Ganis Associate Real Estate Broker

Agent Badge
  • Associate Real Estate Broker
  • Silver Circle of Achievement
  • Certified Buyer Representative
  • Realtor Short Sale Certificate
  • Member of the Long Island Board of Realtors
  • Member of the National Association of Realtors


Madeleine is proud to be an agent at Daniel Gale Sotheby’s International Realty and is enthusiastic about life on Long Island and sharing her knowledge with her clients. Working as a real estate adviser, Madeleine is adept at keeping her clients well informed with the latest market information. Utilizing her technological expertise is another skill that serves her clientele well. This is an advantage in today’s business world and of course adapting to current conditions. Helping buyers or sellers through the entire process, step by step, and making it as simple as possible, is a skill Madeleine has honed in her years of experience as an agent. She is also active in referring clients helping them find new homes across the United States. You can also find Madeleine on Instagram and Facebook.

Madeleine Ganis, a lifelong New Yorker, has resided in the Locust Valley area for over 30 years. Her children attended the Locust Valley schools where she was an active member of the Parent Councils and the Locust Valley School Board. In addition she volunteered for the Center for Parents and Children in Glen Cove, the Grenville Baker Boys and Girls Club and the Girl Scouts of America. Madeleine was also Co-Director of the Adult Education program at LVCSD geared to promote life-long learning, something that she is passionate about.

Madeleine is frequently one of the top producers at the Locust Valley office. She hopes her record of honesty and integrity, along with her enthusiasm, will be an asset to those who work with her.

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