• 355 Route 111 Unit #22, Smithtown, NY

S & D Commercial Real Estate Long Island

S & D Real Estate (formerly known as Smith & DeGroat Real Estate) is a well-established, full-service real estate and property management firm active on Long Island and in the New York Metropolitan area. The firm has been in existence for over fifty years providing quality service for its Nassau County and Suffolk County clientele.

Matthew Smith and the associates of S & D Real Estate have broad experience in commercial real estate and property management. Areas of service include tenant and landlord representation, investment strategy, property acquisition and disposition, and advisory and consulting services. One of the strengths of S & D Real Estate is our ability to evaluate real estate in terms of highest and best use, feasibility and investment performance.

To learn more about S&D Realty and its agents, please view our Company Profile


An experienced past, a progressive future.  One of the strengths of S & D Real Estate is our ability to evaluate real estate in terms of highest and best use, feasibility and investment performance.
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