About

Grainne O’Neill is an attorney with O Neill And Hassen, LLP in Brooklyn, New York, where she practices general law with a client-focused and practical approach. Serving individuals and businesses throughout Brooklyn and the surrounding New York communities, she is committed to providing clear guidance, responsive communication, and dependable legal support tailored to each client’s needs. Her work reflects the importance of careful legal analysis, strong advocacy, and attention to detail in addressing a wide range of legal matters. As a general practice attorney, Ms. O’Neill brings versatility and professionalism to her representation, helping clients navigate legal issues with confidence and clarity. She understands that legal concerns often arise during stressful or uncertain times, and she strives to make the process more manageable by explaining options in straightforward terms and working diligently toward effective solutions. Her approach is grounded in accessibility, preparation, and a sincere commitment to protecting her clients’ interests. Based in Brooklyn, NY 11217, Ms. O’Neill is admitted to practice in New York under Bar Number 5123187. Through her role at O Neill And Hassen, LLP, she continues to provide trusted legal counsel with the professionalism and dedication clients expect from an experienced general practice attorney.

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