Sean M. Cronin, Esq.

Sean M. Cronin is a founding partner at Cronin & Cronin Law Firm with over 20 years experience. He specializes in negotiating tax certiorari matters for prominent developers, national REITs and tenants in Nassau, Suffolk, and Westchester counties, as well as the five boroughs. He is responsible for successfully reducing the assessments, and thereby the real estate taxes, on many of the largest properties in New York State thanks to his expertise in property valuation issues and knowledge of market conditions and demographics. His clients include developers and owners of all property types, including office buildings, industrial buildings, shopping centers and retail locations, restaurants, apartment buildings and condominium complexes, golf courses and assisted living facilities. 

Sean is an Executive Board member and past Co-President of the Long Island Real Estate Group, a charitable organization created to support local communities.   He is an Executive Board Member of Vision Long Island which advances more livable, economically sustainable, and environmentally responsible growth on Long Island through Smart Growth.   Sean is an Advisory Board Member of the Viscardi Center and on the Board of Advisors of the Energeia Partnership. He is an active member of the Chaminade Lawyer’s Association and Real Estate Group as well as the Washington & Lee Alumni Association. 

Sean is featured regularly in the New York Real Estate Journal’s “Ask the Expert” section and has been quoted in various publications, including the Long Island Business News and Newsday. He has been recognized by the Long Island Business News as a “Who’s Who in Commercial Real Estate” multiple times, most recently in 2023 and by the Long Island Herald as the Top Tax Certiorari Attorney in 2023.