At our office, we treat you like family—because we are one.

Attorneys Steven and Joseph Costantino are brothers and law partners. Born and raised in Copiague, New York, each earned their Juris Doctorate at St. John's University School of Law and returned to their hometown to open the law practice. Together, their strong relationships and decades of work across Long Island are a testament to their deep understanding of the local community.

  • Steven A. Costantino, Esq.

    FOUNDING PARTNER

    Juris Doctorate
    St. John's University School of Law, 1983

    Bachelor of Science
    St. John's University, 1979

    Suffolk County Bar Association
    New York Bar Association

  • Joseph A. Costantino, Esq.

    FOUNDING PARTER

    Juris Doctorate
    St. John's University School of Law, 1990

    Bachelor of Science
    St. John's University, 1984

    Suffolk County Bar Association
    New York Bar Association

  • Professional, friendly, prompt, and to the point.

    Great team. Joseph and everyone involved were very professional, friendly, prompt, and to the point. Our transaction went smoothly. Great experience. I highly recommend this law firm.

    - JANETY ADAMS
    Google Review

  • Knowledge and attention to detail.

    Thank you, Steve and Carolann, for your tireless work during the closing of my house. Your knowledge and attention to detail during this process made it easy and painless for me. You kept me informed through every step, and I felt very confident from the contract signing until the closing. I would highly recommend your office to anyone who needs a highly competent law office.

    - ELIZABETH LAGRASSA
    Google Review

  • Makes you feel like family from the moment you meet.

    If I could give ten stars, I would! I used Costantino & Costantino as my real estate lawyer. First off, Carolann is AMAZING! She is SO on point with EVERYTHING & kept me updated throughout EVERY detail & aspect of the closing! And Joseph -- what can I say? He literally makes you feel like family from the moment you meet him! They truly are an AMAZING team there! I would recommend them 1000x over! Aside from their professionalism, their courtesy is second to NONE! I couldn't have been happier! Thank you, guys, for going above & beyond!

    - MATTHEW MARCHESE
    Google Review

  • Straightforward lawyers.

    Very nice ladies and very straightforward lawyers helped me with the closing on my home and all the questions I had throughout the process. I totally recommend them. Eight stars!

    - NERY LEON
    Google Review