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Our Lawyers. Our Success.

Andrea Mannell, B.A. (Hons.), J.D.


Phone: 905-688-9410


Areas of Law

Administrative Law, Civil Litigation and Advocacy, Municipal and Land-Use Planning Law


Andrea joined Sullivan Mahoney LLP in 2018 after articling with the Firm. As a member of our Administrative Law and Litigation Groups, Andrea’s practice involves client representation in courts and before administrative tribunals, dealing with a full range of disputes and litigious matters.

Full Bio

Andrea received her Bachelor of Arts (Honours) from the University of Guelph in 2013 and her Juris Doctor from the University of Calgary’s Faculty of Law in 2017. Andrea articled with Sullivan Mahoney LLP and joined the Firm in 2018 as an associate lawyer after being called to the Bar.

As a member of our Administrative Law and Litigation Groups, Andrea’s practice focuses on general civil litigation, municipal law, and land use planning. Andrea has appeared before all levels of court in Ontario, including the Ontario Court of Justice, the Superior Court of Justice, and the Court of Appeal for Ontario.

While attending law school at the University of Calgary, Andrea was involved with various groups, including Student Legal Assistance, Pro Bono Students Canada, and the Faculty of Law’s Student Ambassador Program. Andrea was also involved in the Faculty of Law’s mooting program, participating in the Philip C. Jessup International Law Moot Court Competition in 2016, in which her team placed first in Canada and represented Canada at the Moot’s international rounds in Washington, D.C., and the Gale Cup Moot in 2017.

Andrea is proud to have been born and raised in the Niagara Region. Outside of the office, Andrea enjoys spending time with friends and family, participating in a wide array of sports, and exploring and enjoying Niagara’s amenities.


Admitted to the Law Society of Upper Canada – 2018
Juris Doctor – University of Calgary – 2017
Bachelor of Arts (Honours) – University of Guelph – 2013


Law Society of Upper Canada
Canadian Bar Association
Ontario Bar Association
Lincoln County Law Association