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O'Sullivan & Zacchea represents a broad range of clients in residential and commercial real estate purchases, sales, financing, leasing and development transactions and associated litigation.

We are your real estate and lending experts.

Whether it’s the place of your dreams or just a stop on the road, we can help. We understand the process from start to finish and pride ourselves on making your transaction as easy as possible. We conduct due diligence, negotiate and advise on details of your transaction and let you focus on the bigger picture.


We have extensive experience representing clients in commercial and residential real estate transactions; including Cooperative Units, Condominium, Single & Multi-family homes, foreclosures, short-sales, commercial real estate, deed transfers, share and unit transfers, lien foreclosure and enforcement, landlord-tenant matters, sale of estate property, reverse mortgages, closings by power of attorney, mortgage issues, real estate leases, real estate disputes (partition actions, contract disputes, real estate fraud, boundary disputes and adverse possession claims), purchase or sale of an apartment building, mortgage refinancing, preparing and negotiating letters of intent, financial commitment letters, LLC and ownership agreements, joint venture and development agreements, as well as other ancillary agreements.

    Starting a business is a major event. Whether alone or in partnership, the proper formation is essential to the foundation of the entity. We counsel entrepreneurs, sole proprietors, start-ups, family businesses and small business through the critical process of formation. From understanding the value of incorporation and the various corporate forms to compliance with the rules and regulations of formation, our goal is to provide our clients with the proper platform for success. We regularly advise, draft and analyze operating agreements and partnership agreements, as well as joint ventures and acquisitions.
    Clear communication and mutual understanding is essential to business. Our clients rely on us to negotiate, draft and execute documents that accurately reflect their understanding, comply with regulations and achieve their goals. We counsel clients on reducing liability, mitigating risk and resolving problems before they arise.
    Commercial disputes can be complex and challenging. Businesses require skilled, experienced counsel to advise and advocate for them. We have counseled a wide variety of clients in commercial litigation, including real estate developers, accountants, attorneys and other entrepreneurs in connection with partnership disputes, corporate accountings, liquidations and dissolutions.
    As businesses expand and contract, legal needs often unexpectedly arise. We approach these transitions with our clients' unique financial and strategic plans in mind. We advise and counsel clients in connection with an array of commercial agreements including sales and supply agreements, research and development agreements, licenses, franchise agreements, distribution agreements and indemnifications. We also advise clients on establishing and implementing exit strategies for partners and owners, including transfer of ownership between partners, family members or chosen employees.
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