Photo of Thomas S. Cosma

Thomas S. Cosma



Thomas Cosma has 40 years’ experience advising small and middle-market businesses and in resolving substantial commercial disputes through negotiation, mediation, arbitration and litigation. With a focus on construction, commercial, corporate and business law, Tom has litigated matters before the United States District Court for the District of New Jersey, the Third Circuit Court of Appeals, the United States Supreme Court and New Jersey State courts.

With regard to companies in the construction industry, Tom advises businesses on a wide range of issues, corporate planning, litigation and contract review. Many of his clients are real estate development entities, including federally subsidized housing projects in New York and New Jersey, as well as professional entities such as law firms, engineering firms, architects and other limited partnerships. His clients appreciate his responsiveness, efficiency and ability to anticipate problems that may affect a litigation strategy.

With a strong knowledge of business valuation and estate planning, Tom is also experienced in advising clients on business succession. He has a sophisticated understanding of the complex tax issues involved in the transfer of a business and efficiently resolves the thorny family disputes that often arise in these matters.

Following law school, Tom served as a law secretary to the Honorable Peter W. Thomas, Superior Court of New Jersey, Law Division.


Professional and Community Affiliations

  • Served as a member of the New Jersey Supreme Court District Ethics Committee
  • Member of the Essex County Bar Association and of the New Jersey State Bar Association, for which he has served on the Construction and Public Contract Committee since 1984
  • Served as Chair of both the New Jersey State Bar Association’s Judicial Administration Committee and the Equity Jurisprudence Committee
  • Participates in the Litigation, Business Law and Public Contract Law sections of the American Bar Association. Within the Business Law Section, Tom is a member of the following committees: Business and Corporate Litigation; Legal Opinions; LLCS, Partnerships and Unincorporated Entities; Middle Market and Small Business; Negotiated Acquisitions; and Uniform Commercial Code. He also serves in the Section of Litigation’s Construction Litigation and Business Torts Litigation Committees and the Section of Public Contract Law’s Model Procurement Code and III-Construction Division Committees.
  • Faculty Member, New Jersey Judicial College (2002)
  • American Bar Association
  • Essex County Bar Association
  • New Jersey State Bar Association

News & Insights


Speaking Engagements

  • Presenter, "Damages & Remedies; Pricing the Claim"
    NJICLE: Construction Claims and The Law: Preparation, Proof and Defense, New Brunswick, NJ, 10.2018
  • Lecturer, "Construction Claims and Law: Preparation, Proof and Defense," New Jersey Institute for Continuing Legal Education (NJICLE)
  • Presenter, "Public Contracts and Procurement Regulations in New Jersey"
    Lorman Seminar, (2003, 2005, and 2007)
  • Speaker, New Jersey Assisted Housing Management Association, Spring Management Event 
    (2000, 2002, 2003, and 2005)
  • Lecturer, "Construction Law Basics," New Jersey Institute for Continuing Legal Education (NJICLE) 
  • Lecturer, "Chancery Law Bench-Bar Conference," New Jersey Institute for Continuing Legal Education (NJICLE)
  • Lecturer, "Bid Protests and Appeals Under Federal, State and Local Public Contract Laws," New Jersey Institute for Continuing Legal Education (NJICLE)
  • Lecturer, "Public Bidding Law and Practice in New Jersey," New Jersey Institute for Continuing Legal Education (NJICLE)

Blog Posts


Chambers USA (2020-2021)

  • Construction  New Jersey 

Best Lawyers in America (2016-2024)

  • Construction Law
  • Litigation – Construction
  • "Lawyer of the Year" (Newark): Litigation Construction (2022), Construction Law  (2019, 2023)

"New Jersey's Top Rated Lawyers" (2012), a list compiled by Martindale-Hubbell.

Please see Honor and Award Methodology. No aspect of this advertisement has been approved by the Supreme Court of New Jersey.


  • Honorable Peter W. Thomas, Superior Court of New Jersey, Law Division


Seton Hall University School of  Law (J.D., cum laude, 1977)

Saint Peter's College (B.A., cum laude, 1974)


Back to Page