Since 2007, Keith D. Black has advised clients on a broad range of Trusts and Estates matters, including estate and trust planning, administration and litigation. From 2008 through 2019, Mr. Black headed his own law firm and expanded his practice to include guardianships, elder law, planning for persons with special needs, and real estate. Mr. Black’s practice also encompassed representing high net worth individuals, trusts, estates, family businesses and foundations in sophisticated tax planning and administration.

As a litigator, Mr. Black’s practice developed to include probate contests, accounting and kinship proceedings, discovery and turnover proceedings, trust invalidation proceedings, and proceedings to suspend and remove fiduciaries. Mr. Black frequently receives appointments by the Surrogate’s Courts as a Guardian ad Litem to represent minors and other persons under a disability in Surrogate’s Court proceedings.

Mr. Black’s legal experience began in 2000 when he worked as a law intern in the litigation department of Clifford Chance Rogers and Wells, LLP, in New York City. Mr. Black also worked in the corporate real estate department of Skadden, Arps, Slate, Meagher & Flom, LLP, in New York City, and is a former volunteer with the Nassau / Suffolk Law Services – Pro-Bono Project.

Mr. Black’s career in Trusts & Estates began in 2006 when he served as the law intern to the Honorable John B. Riordan, Nassau County Surrogate. Mr. Black later worked under the supervision of counsel for the office of the Nassau County Public Administrator. From 2019 – 2021, Mr. Black was employed as Counsel to the law firm Lewis Johs Avallone Aviles, LLP in the Estates, Trusts and Elder law department.

Mr. Black is a well-known speaker and lecturer on estate and trust planning, administration and litigation. Mr. Black will be a lecturer at Hofstra University – School of Law, Paralegal Studies Certificate Program for the Spring 2022 Semester teaching a class on Estates, Trusts and Wills.


  • Nassau Lawyers’ Association of Long Island, Inc. – Chairman of the Board (2020-2022); President (2016-2017); Member of Continuing Legal Education Committee and Scholarship Committee
  • New York State Bar Association
  • Nassau County Bar Association