Deo Condominium Lawyers
Automatically compiled listing. Details may contain errors.8 lawyers · York Region
One of 262 law firms listed in Vaughan, and one of 53 handling Civil Litigation & Dispute Resolution.
About Deo Condominium Lawyers
Deo Condominium Lawyers is a Vaughan, Ontario firm of eight lawyers who practice condominium law only. It was founded by Mario D. Deo, who was called to the Ontario Bar in 1987 and has taught condominium law to property managers at Humber College and Seneca College since 1993. The firm's work is limited to representing condominium corporations and their boards, spanning everyday governance and by-law questions through to litigation, Condominium Authority Tribunal cases, liens, insurance disputes, and Tarion warranty claims tied to new construction.
Mario Deo served as President of the Canadian Condominium Institute's Toronto Chapter from 2014 to 2015 and received the Association of Condominium Managers of Ontario's President's Award in 2006, and Deo has also been appointed to Tarion's Consumer Advisory Committee to advise on condominium issues. The rest of the team includes lawyers who worked as caseworkers with tenant legal clinics before joining the firm, a former insurance defence litigator, and associates who teach CMRAO-accredited courses and write for Condo Voice Magazine. The firm has been the partner sponsor of the annual Condo Conference since 2023.
In the community
- The firm has been the partner sponsor of the annual Condo Conference since 2023, most recently in 2025.
- Firm lawyers Eric Plant, Lyndsey McNally, Maria Dimakas, and Joy Matthews appeared as guests on TVO's The Agenda with Steve Paikin to discuss whether condo boards still play a vital role as more condominiums rise up across Ontario.
- Firm lawyers sit on the Canadian Condominium Institute Toronto Chapter's board and committees, including its Legislative Committee and its Safety and Legislation Committee.
- Firm lawyers teach CMRAO-accredited courses for property management companies and instruct condominium law courses at Humber College and Seneca College.
- Firm lawyers have published articles on condominium law in Condo Voice Magazine and CM Magazine.
- One of the firm's lawyers founded Kai's Little Library, a community book-sharing initiative.
Good to know
Wheelchair accessibleLawyers 8
This firm’s lawyers at a glance
- Called to the bar
- 1987–2024 · median 16 years in practice 8 of 8 lawyers
- Law schools
- University of Ottawa (3), Osgoode Hall Law School (2), Queen's University, Queen's University Law School, University of Western Ontario 8 of 8 lawyers
- Languages on the roster
- Russian
Where to find them
3100 Steeles Ave. W., Suite 300, Vaughan, Ontario, Canada L4K 3R1 · 905-760-1800
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Criminal DefenceThis 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 the firm’s own website. Verify licence status in the Law Society of Ontario directory ↗
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