• Dedicated & Professional

    NYC & Long Island Law Firm

  • We're a Full-Service
    Law Firm

    With Offices in Garden City and Hauppauge, NY

Our firm operates
in the State and Federal Courts, at both the trial and appellate level.

Walsh Markus McDougal & DeBellis, LLP is a full service law firm. The Firm's experience extends to matters relating to real estate finance, real estate transactions, municipal and zoning law, and foreclosures.

The Firm also has a wealth of experience in civil, commercial and personal injury litigation, as well as in the area of appellate practice. In addition, the Firm has an experienced trust, estate planning and administration practice. The Firm has assembled personnel uniquely qualified for the scope of its practice.

The Firm regularly represents clients in a variety of transactional areas and in administrative and municipal hearings and in State and Federal Courts, at both the trial and appellate level. The Firm's offices are fully staffed and located in Nassau County in Garden City and in Suffolk County in Hauppauge. These locations accommodate clients in either Nassau or Suffolk County, as well as any of the boroughs of New York City.

Meet Our Team

Kevin M. Walsh
Paul R. McDougal
Claudio DeBellis


  • John Yetman is a highly skilled communicator and legal advisor that is able to translate legal terms into simple logic, which provides an opportunity for the client to make informed and precise decisions. A strategic thinker and very effective negotiator, John has the ability to help his clients achieve their short and long-term goals, ultimately reducing their financial and legal exposure. He is a sharp, passionate attorney who truly cares about his clients, and he is very committed to his work. John was an absolute pleasure to work with over the past two years---and, his business and legal acuman has been invaluable to us. We would highly recommend John Yetman to prospective clients.        - Ronald and Yanique Woodall
  • I believe to say "you have a great Firm" is not enough, because it is the Melinda and the Nikki and the many others that day in and day out treat my files and my customers as their own, that yes... your company is amazing... but it is a sum of the parts that deserve my thanks and praise. Your staff, and moreover YOU personally, are where I am ever grateful for your partnership and counsel. The culture of a company trickles down from the top, and I compliment you and again thank you for Walsh Markus being a well-oiled and critical part in my success. – Anonymous
  • I just wanted to take the time to acknowledge all of the efforts and support of your firm throughout the years we have been working together. Michele, who is my key contact person, is a key counter part of your organization. Through patience and professionalism of both Michele and Paul McDougal, my uncertain transaction went forward and closed with ease. Thank you and your staff for assisting me in my business. – Anonymous
  • I just wanted to say THANK YOU! Once again you have bent over backwards for me and my clients. I have been in the mortgage business for 25 years and I have never had a law firm give me 110% every time I needed them. You have earned a client for life and I will be telling many others about my experience. Thanks again – Anonymous