Long Island Commercial Real Estate Company

For over 68 years, S&D Real Estate has faithfully served Nassau and Suffolk Counties. We are a well-established, full-service Long Island commercial real estate firm, with over 20 employees. The company operates out of main offices in Mineola and Hauppauge, as well as affiliate offices in Montauk and Manhattan.

About S&D Real Estate

S&D Real Estate is not your average Long Island brokerage firm. At our core, we employ skilled, multi-faceted professionals with the ability to provide financial analysis, asset review, risk analysis and due diligence. In fact, our over 20 employees include a number of:

  • Brokers
  • Agents
  • Property Administrators
  • Property Managers
About SD Real Estate
about us history

Company History

In 1949, Edward Smith, the long-time Mayor of the Village of Mineola, founded Edward S. Smith & Co., Inc., which specialized in real estate developing, planning and sales throughout Nassau and western Suffolk counties.

In 1955, he established Smith & DeGroat, Inc. It quickly became a widely-recognized industry leader in Long Island commercial and residential real estate.

Our Experience

With broad experience in commercial and residential real estate, as well as property management, S&D’s other primary areas of service include:


Tenant and Landlord Representation


Investment Strategy


Property Acquisition and Disposition

Advisory and Consulting Services

Advisory and Consulting Services

Long Island Real Estate Experts

Our strength lies in our ability to evaluate real estate in terms of highest and best use, feasibility and investment performance. With expert knowledge of local and regional markets, we are more than able to match the financial and operational needs of clients with appropriate real estate opportunities. That’s why we were originally chosen to manage Nassau’s historic landmark properties, as well as Veteran and Military housing at Mitchel Field.

Standard Valuation Services

S&D Real Estate also has a long-standing relationship with its sister company, Standard Valuation Services (SVS). Since its inception in 1989, SVS has amassed over 35 employees in the valuation, assessment, GIS and litigation support areas.

Meet our Real Estate Agents

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