O’Connor Davies, LLP, one of the oldest yet fastest-growing accounting and advisory firms in the U.S., has expanded by nearly 10,000 s/f and extended the term of its existing 35,580- s/f lease at 500 Mamaroneck, a property in Harrison, NY owned by Empire State Realty Trust, Inc.
With this transaction, O’Connor Davies will occupy more than 45,000 s/f on two floors through 2026.
It is both the third expansion and third lease extension for the firm, which first moved into the property in 2001.
“With its full suite of amenities and convenient location, 500 Mamaroneck works wonderfully for O’Connor Davies’ successful and growing business,” said Jeffrey H. Newman, senior vice president of ESRT. “We are delighted that we were able to facilitate its third expansion with us.”
Founded in 1891, O’Connor Davies is a full-service certified public accounting and advisory firm that serves clients domestically and internationally. The firm has nine offices in New York, New Jersey, Connecticut and Maryland, and employs more than 550 professionals.
O’Connor Davies is among the 20 largest accounting firms in the New York Metropolitan area, according to Crain’s New York Business and the Westchester and Fairfield County Business Journals.
John McCarthy of McCarthy Associates represented O’Connor Davies in the lease negotiations.
Newman represented the landlord, ESRT, along with senior leasing associate Kimberly Zaccagnino and leasing associate Tara Long.