About the Team at O'Sullivan Estate Lawyers

O'Sullivan Estate Lawyers is a Toronto law firm practising exclusively trust and estate law. Prior to our inception in 1998, our founder, Margaret O'Sullivan, was a partner directing the trusts and estates practice at a major Canadian law firm.

In time, Margaret felt the need to make personalized service accessible to clients in a boutique setting. She eventually struck off on her own path and established O'Sullivan Estate Lawyers. Since then, we have grown to become one of the most trusted and reputable trust and estate law firms in the Canadian legal market.

A Dedication to High-Level Client Service

Our firm is known for providing sophisticated advice and attentive service to a discerning audience. Most of our clients' succession issues involve large, high net worth or complex situations — whether domestic, cross-border or multijurisdictional.

In the early years, we wondered whether such a discriminating clientele would be willing to turn from the large Bay Street firms to a smaller, independent law boutique. After over 20 years of operation, the success of our firm has made the original vision a reality. Clients continue to look to us for our depth of expertise and our unwavering dedication to providing high touch service to each and every client.

"O'Sullivan has a stellar reputation and produces excellent work. We know our referring clients are in safe hands, because their team is capable of handling complex matters and producing excellent work." — Toronto Financial Advisor

A Culture of Leadership and Professionalism

One of the reasons behind our success over the years is our adherence to the highest standards of practice. Our entire team — lawyers, clerks and support staff — all take ownership for their work, carrying it out with a deep sense of professionalism and leadership.

We are a top-ranked, peer-recognized firm. Over the years, our lawyers have won numerous awards, accolades and recognitions as leading legal practitioners. They are also active speakers and writers on trust and estate law and leaders in trust and estate professional organizations. By keeping ahead of and leading new developments, we maintain our commitment to advancing both our clients' interests and our profession as a whole.

Contact Our Firm

We are confident that clients will find in our firm sterling legal advice and service. To arrange a meeting with our team, we invite you to email us through our online form.