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John Margie



John Margie is certified as a Specialist in Construction Law by the Law Society of Ontario. Since his call to the Bar in 1995, John has practiced exclusively in construction and surety bond law, including complex international construction disputes, construction claims, construction liens, trust claims and surety bond claims. John has been involved in disputes related to large infrastructure, industrial and commercial projects, including hydroelectric projects, pipelines, mines, power plants, hospitals, waste and recycling treatment plants, roadworks, sewer and watermain projects and large commercial buildings. John represents parties at all levels of the construction supply chain.

John specializes in arbitration, litigation and mediation of complex construction disputes.

John is a Fellow of the Canadian College of Construction Lawyers and has a BV® Distinguished Peer Review Rating from Martindale Hubbell.

John is the author of several articles related to construction law, construction liens in Ontario and the co-author of several articles on construction litigation.


  • Canadian College of Construction Lawyers
  • Ontario Bar Association, Construction Law Section
  • The Advocates’ Society

Representative Publications

  • “Project Bank Accounts: Their Time Has Come” (2015) 31:6 Construction Law Letter
  • “Trust Claims and Lien Claims Are Different Concurrent Remedies” (2015) 32:2 Construction Law Letter
  • “Comstock Canada Ltd. (Re), A Model of Efficiency” (2015) Journal of the Canadian College of Construction Lawyers
  • J. Margie, “Bidding and Tendering: What Have We Done?”, in Glaholt LLP and Borden Ladner Gervais LLP, Review of Construction Law: Recent Developments (Toronto: Carswell, 2012) at pg 1.

Education & Admissions