Sullivan Mahoney | Leaders in Law

The Firm was founded in 1953 by Philip H. Sullivan and C. Hugh Mahoney, and has established a tradition of integrity, skill and professionalism. 60 years later, we still embrace those values – and they form a solid foundation upon which we’ve grown.

Sullivan Mahoney LLP is the largest law firm in Niagara, providing a full range of legal services to our diverse client base.

We have earned an unsurpassed reputation for impeccable service, thorough and pragmatic legal advice and complete commitment to our clients. Our lawyers are knowledgeable and dedicated to their professional development in order to best serve our clients’ needs.

Not only are we committed to our clients, but also to our communities. We give back through charitable donations, fundraisers and sponsorships.