Grassi was founded in 1980 by Louis C. Grassi, with only an empty filing cabinet and a desk. Since then, Grassi has grown to become one of the nation’s largest accounting firms with more than 450 employees and nine office locations in the U.S. and Italy. Grassi specializes in professional services for a variety of industries including construction, financial services, manufacturing and not-for-profit. Our team of experienced CPAs, CFOs, business consultants, forensic accountants, valuation experts, trust and estate specialists and tax advisors offer strategic advice and customized solutions to overcome all obstacles standing in the way of your greatest success. We do this through our commitment to add Strength in Certainty to every business decision and financial move you make. We have been ranked among the Top 100 largest firms in the U.S. by both INSIDE Public Accounting and Accounting Today, the Top 20 largest firms in the New York Metropolitan area by Crain’s New York Business and the Top 10 largest firms on Long Island by Long Island Business News
