O’Sullivan Estate Lawyers is a boutique Toronto firm that focuses solely on trust and estate matters. With over 25 years of experience, the practice provides highly personalized services in estate planning, administration, cross-border succession (Canada–U.S.), complex trust and tax planning, family business succession, situs wills, and modern family structures. Clients include high-net-worth individuals, U.S. connections, and those seeking modern-family estate structuring. Their deeply customized and high-touch approach ensures clarity and security for clients’ legacies.