About Rosemary

Rosemary O'Neill is a seasoned real estate agent with a career dating back to 1997. Recognized as a Top Producer for nearly two decades, Rosemary specializes in a variety of real estate niches including residential sales, luxury homes, first-time homebuyers, and commercial properties. Her expertise extends throughout the North Shore of Long Island, encompassing areas such as Manhasset, Port Washington, Garden City, and further east to the Westhampton Beach community.

Born and raised in Manhasset, Rosemary's deep-rooted connection to the community led her back after graduating from New York University. She sought to provide her own children with the same enriching upbringing she experienced – surrounded by the area's beauty, and convenient proximity to New York City.

Beyond her professional endeavors, Rosemary is actively engaged in her community, having served on various boards including the Manhasset Women’s Coalition Against Breast Cancer, the Manhasset High School Booster…

Awards & Accomplishments

  • 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
  • Named one of Real Trends America's Best Real Estate Professionals for 2021

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