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Rosemary O'Neill Real Estate Salesperson

Agent Badge
  • Real Estate Salesperson
  • Certified Buyer Representative
  • Accredited Staging Professional for Real Estate (ASPRE)
  • Gold Circle of Excellence
  • Member of National Association of Realtors
  • Member of Long Island Board of Realtors
  • Member of Manhasset Port Washington Real Estate Board


Rosemary has successfully been practicing Real Estate since 1997, and has been recognized as a Top Producer for almost 20 consecutive years.

She specializes in residential sales, luxury homes, first time homebuyers and commercial property. Her personal knowledge of Manhasset and Port Washington also extends to the entire North Shore of Long Island, Garden City and Westhampton Beach area.

Born and raised in Manhasset, Rosemary returned to her home town after graduating from New York University, to raise her own family. She wanted her children to also experience growing up in this wonderful community and enjoy its beauty, excellent schools and proximity to New York City.

Active in her community, Rosemary served on many boards, including Manhasset Women’s Coalition Against Breast Cancer, Manhasset High School Booster Club, AHRC, IHM Board for Our Lady of Grace Montessori School, and CCD teacher for St. Mary’s Parish.

Prior to her Real Estate career, Rosemary taught for many years at both the High School and College level. Her skill set as an educator easily transitioned to her real estate career. Her dedication, integrity, hard work and professionalism are enjoyed by buyers and sellers alike, and also by her peers in the business.

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