About Mario

Mario founded Deo Condominium Lawyers after completing a B.A. in political science and economics and then law school at the University of Western Ontario. His practice focuses on representing condominium corporations, and he has written and published articles on condominium law over the years. He has lectured for the Law Society of Upper Canada and presented at Canadian Condominium Institute and Association of Condominium Managers of Ontario events, and he has taught condominium law courses at Humber and Seneca College. He served as President of CCI's Toronto chapter from 2014 to 2015, was appointed to the Tarion Consumer Advisory Committee, and previously edited Condo Voice Magazine. He was called to the Ontario bar in 1987 and holds an LL.B. from the University of Western Ontario and a B.A. from the University of Toronto.

Education & credentials

Law school
University of Western Ontario
Undergraduate
B.A., University of Toronto, 1982

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This listing was generated by AI from public sources in September 2026. It may contain errors, and we can’t guarantee it’s accurate or complete. Before you rely on anything here, verify it on their firm’s website. Confirm Mario D. Deo’s licence and standing in the Law Society of Ontario directory ↗

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