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Erin A. O’Brien is a partner in the firm’s Corporate Department, specializing in Tax Certiorari. She has successfully obtained millions of dollars in property tax savings for national, regional and local clients, including not-for-profits. Her extensive litigation experience in courts throughout New York and Connecticut has led to the establishment of significant legal precedent in the field.

As a founding member of Women in Tax Assessment, Erin is dedicated to advancing diversity and inclusion within her profession. She also contributes her expertise as a member of CIBS W, IPT, LIBDC and various bar associations. Erin is a frequent guest speaker and has shared her insights at numerous symposiums throughout the country.

Practice Areas

Corporate Tax Assessment, Eminent Domain and Property Valuation Real Estate Property Tax Challenges

Industries

Admissions

  • New York
  • Connecticut
  • U.S. District Court for the Eastern District of New York
  • U.S. Court of Appeals for the Second Circuit
  • U.S. Supreme Court

Education

  • J.D., City University of New York Law School, 2005
  • B.A., North Carolina State University, 1996

Professional and Community Activities

  • Member, New York State Bar Association
  • Member, Nassau County Bar Association
  • Member, Suffolk County Bar Association
  • Member, New York City Bar Association, Condemnation and Tax Certiorari Committee
  • Associate Board Member, Association for a Better Long Island
  • Founding Member, Women in Tax Assessment
  • Member, New York State Assessors’ Association
  • Member, Institute for Professionals in Taxation
  • Committee Member, CIBS-W Commercial Industrial Brokers Society

Honors and Awards

  • New York Metro Super Lawyers, 2023
  • “Top 50 Women in Business,” Long Island Business News, 2023
  • “Who’s Who in Tax Certiorari Law,” Long Island Business News, June 2022
  • “Women in Real Estate,” New York Real Estate Journal, September 2019

Publications

  • “The Effects of COVID-19 on Property Taxes,” The Legal Brief
  • “The ‘Dark Store’ dilemma – When Assessors Disregard Fee Simple Valuation,” New York Real Estate Journal 
  • “Property tax exemptions: Are you paying more property taxes than you should be?” New York Real Estate Journal
  • “Home Team Advantage?: The Taking of Private Property for Sports Stadiums,” New York City Law Review

News & Insights