Long Island Real Estate Agents

S&D Real Estate has over 20 hard-working employees that focus on a number of areas related to risk analysis, financial analysis, asset review and, of course, due diligence. All of our Long Island real estate agents have the tools, knowledge and experience needed to meet and exceed your property management and commercial real estate expectations.

Take the time to meet our team and find out more about the dedicated professionals that make up S&D Real Estate.

Long Island Real Estate Agents

Meet our Team


Matthew Smith

Matthew Smith is a graduate of St. John’s University College of Business Administration, Jamaica, New York, with a B.S. Degree in Business Management. He is an active member of the Appraisal Institute, keeping current with market trends by attending seminars, meetings and lectures.  Mr. Smith has been engaged in the real estate industry since 1983. […]


Marty Miller

Marty Miller is a licensed real estate Salesperson with 15 years of experience in many phases of commercial real estate. He is a graduate of the University of South Florida with a Bachelor’s Degree in Communications and Advertising. Mr. Miller was a member of the Greater Tampa Chamber of Commerce. He specializes in market and […]

Louis Santosus

Louis Santosus has been a New York State licensed Real Estate Salesperson for over 20 years. Mr. Santosus specializes in the acquisition, disposition and leasing of all types of commercial property in western Nassau County. He is a past Trustee of the Village of Mineola and past Chief of the Mineola Fire Department. Mr. Santosus’ […]

Edward Madden

Edward Madden is a licensed Real Estate Salesperson selling and leasing residential and commercial real estate. Prior to joining S&D Real Estate, he had a successful 35 year career in the securities industry. His responsibilities included securities financing, liquidity management, risk management and various management and administrative roles.  At JP Morgan Securities, he turned around […]

Nathan Schwartz

Nathan Schwartz is a licensed New York Real Estate Agent, Property Manager, as well as Head of Marketing and Web Development at Smith & DeGroat Real Estate. Nathan has previous experience in Sales and Telemarketing with a background in masonry and construction. Nathan is a graduate of the University of Hartford, Barney School of Business […]

Neal Peysner

Neal Peysner has 30 years of extensive Real Estate Appraisal dealing with residential, commercial, high value and historical experience in both Nassau and Suffolk County. Mr. Peysner is a State Certified General Real Estate Appraiser and a Licensed Real Estate Sales Agent.  He has a broad background in special use properties for a variety of […]

Gregory R. D’Esposito

Gregory R. D’Esposito is a graduate of SUNY Stony Brook University, Stony Brook, New York, with a Bachelor of Sciences in Business Management. Mr. D’Esposito is a New York State Licensed Real Estate Salesperson as well as a New York State Certified General Real Estate Appraiser since 2010. He attends continuing education courses as well […]

Office Administrators

Donna Marder

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