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O'Sullivan & Zacchea represents clients in the prosecution and defense of claims in commercial disputes and administration proceedings. Our clients benefit from a collaborative approach designed to ensure efficient, cost-effective representation to meet our clients goals. 

We provide expert counsel for civil litigation matters.

We commence and defend civil litigation matters involving real estate, business and partner disputes, contract disputes, complex commercial transactions, debt/financing issues, zoning issues, estate matters, administrative law and foreclosures. Our team has substantial trial experience before courts, administrative agencies and arbitration panels in New York, Queens, Brooklyn, Long Island and Westchester.

We work together with our clients from the inception of their case to create and present a winning argument at trial. We are cognizant of the cost of litigation - both time and money - and we are mindful of our clients' resources.

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