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  • Call to the Bar
    • Called to the Bar of Ontario, 2005
  • Education
    • LL.B., Osgoode Hall Law School, 2004
      Trinity College Dublin, 2004 (First Class Hons.)
      Canadian Aviation Institute (Hons.),
  • Memberships
    • Member, Law Society of Ontario
      Member, Canadian Bar Association
      (Ontario) Construction and
      Infrastructure Law Section
      Board of Directors, Canadian
      Construction Association
      Member, American Bar Association
      Member, Toronto Lawyers Association
      Member, Women’s Executive Network

Catherine DiMarco


Called to the Ontario Bar in 2005, Catherine has practiced law for nearly 15 years, primarily dealing with construction claims and general civil litigation. Catherine is certified as a Specialist in Construction Law by the Law Society of Ontario.

Catherine is an Executive member of the Ontario Bar Association Construction and Infrastructure Law Section, on the Board of Directors of the Canadian Construction Association and on the CCA Executive Committee.Catherine previously served a two-year term as a member of the Board of Directors of the Canadian Association of Women in Construction.

Catherine is one of the founding partners of Heal & Co. LLP after having practiced at a prominent Toronto-based full-service firm, including as a partner. Catherine was a member of the Architectural/Engineering Services Group (“ACES”) where she helped organize, and regularly spoke at, the ACES Group’s annual Construction Law Update on topics including rights and obligations relating to holdback funds and lien and trust remedies under the Construction Lien Act. Heal & Co. LLP is a member of the Toronto Construction Association, the Ontario General Contractors’ Association and the Canadian Construction Association. Catherine regularly leads Heal & Co.’s sponsorship, speaking and attendance at the events and seminars hosted by these organizations.

Catherine was previously with the Ontario Ministry of Natural Resources and worked for a number of years for the Aviation Flood and Fire Management Branch where she received the Amethyst Award for the Branch’s efforts during the Eastern Ontario ice storm of 1998.

Catherine’s practice encompasses many different sectors of the construction industry. She represents owners, general contractors, subcontractors and suppliers, as well as design and engineering professionals, both on the claims side and on the defence of claims, in the insurance and non-insurance context. Catherine has defended public authorities, including municipalities, in matters involving allegations of negligent design, supervision and inspection.

In November 2012, Catherine obtained the Osgoode Certificate in Construction Law.

Catherine has also taught a course on construction law at the George Brown College School of Architectural Studies and Construction Management and Trades.

Catherine regularly attends at the Superior Court of Justice on a variety of construction and civil matters.

Catherine is vice-chair of the Manufacturers, Suppliers and Services Council of the Canadian Construction Association, The Advocates’ Society, the Ontario Bar Association Construction and Infrastructure Law Section, the American Bar Association, the Women’s Executive Network and the Toronto Lawyer’s Association.