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In all of our services provided to you, we are more than your lawyers, we are you partners.

Your Success is Our Success

Schwartz & Sinski, P.C. are your real estate attorneys in Southampton. We have over forty years combined experience in all aspects of real estate law including real estate contracts and real estate closings, land use and zoning including variances and property subdivisions.

Our Practice

Real Estate

Whether you are a first time home buyer, investing in a vacation house, or a seasoned speculator capitalizing on real estate investments, we offer you the experience and expertise to guide you every step of the way.


Wills and Trusts

Creating wills and trusts can be a trying experience for some and we strive to make these processes as comfortable as possible. We give you the straight answers and simplify the experience for you.


Business Law

Anyone can create a corporation. Schwartz and Sinski will help you determine whether incorporating your business is advantageous to you.

Our Partners

Kathleen F. Schwartz, Esq. is the founding partner of our firm. She has dedicated over twenty years building a first class legal practice based upon the principle of zealous devotion to client representation. Ms. Schwartz has earned the trust and respect of clients and colleagues alike.
Kathleen received her BA from Long Island University, Southampton NY and her LLB from the University of Denver, Denver, CO. She has served as an Arbitrator in the Second District Court and an Adjunct Professor of Law at Long Island University, Southampton, NY.
Memberships are maintained in the New York State Bar Association, Suffolk County Bar Association, Suffolk County Women’s Bar Association and the Council of Overseers, LIU, Southampton Campus. She is also active in many local and civic affairs. She received the Distinguished Alumni Award, Southampton College in 1992, and Woman of the Year, East End Women’s Network, 1991.

Douglas C. Sinski, Esq. started his career as counsel to a large metropolitan law firm working primarily in their real estate division. While maintaining his private practice of law, Doug also served as aide / counsel to the mayor of Yonkers and general counsel to an international oil company. He was also special counsel to First American Title Co.. After earning his B. A. from St. Johns University, Doug went on to receive his Juris Doctor Degree from New York Law School. He is admitted to practice law before all courts in New York State and the United States District Court for the Southern and Eastern Districts.
Memberships include the Nassau County Bar Association, The Huntington Township Chamber of Commerce, The National Association of Mortgage Brokers, The New York State Association of Mortgage Brokers, and Advancement for Commerce, Industry and Technology Long Island.