Marc McAree


Certified Specialist in Environmental Law by The Law Society of Ontario

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Noted for his perseverance, hands-on approach and pragmatism, Marc McAree goes the extra mile to deliver decisive results for clients.

He prioritizes building strong relationships with clear communications based on forthright legal advice. Marc enjoys building rapport with clients and this helps him learn the nuances and complexities associated with their businesses and environmental matters. Having now practiced environmental law for over 25 years, Marc knows what it takes to craft successful strategies and outcomes for clients.

As a Law Society of Ontario Certified Specialist in Environmental Law, Marc leads a litigation practice where he takes on civil lawsuits, judicial reviews, appeals of regulatory orders and approvals, and defence of regulatory prosecutions. He has and continues to represent clients at all levels of Ontario Courts and before administrative tribunals. When preferred by the litigants, Marc brings considerable experience to negotiating favourable settlements for clients.

In addition to litigation, Marc advises clients about various environmental matters involving contaminated land, excess soil, nuisances, discharges, spills, approvals, risk mitigation, insurance, day-to-day compliance, and due diligence. Marc helps clients navigate environmental aspects of land purchases and sales, share purchases and sales, asset purchases and sales, leases and financings. Uniquely, Marc has a subspecialty in on-road vehicle emissions including compliance with U.S. Environmental Protection Agency (U.S. EPA) and California Air Resources Board (CARB) emission standards in Canada, and resulting regulatory investigations and enforcement actions.

A trusted and respected name in environmental law, Marc has earned a reputation for leaving no stone unturned as he helps clients achieve their objectives. He does not shy away from challenging issues, and he strives to deliver effective and commercially-reasonable solutions.

Marc has been celebrated for his work by being named for several years now by Lexpert as one of the Leading 500 Lawyers in Canada, and also has and continues to be honoured by his peers by being named one of the Best Lawyers in Canada for environmental law. Lexpert has specifically identified Marc as a top environmental lawyer in Canada.


  • Called to the bar of British Columbia (2008)
  • Certificate of Conflict Management, University of Waterloo (1999)
  • Chemistry for Environmental Professionals, University of Toronto, Continuing Engineering Education (December 1997)
  • Called to the bar of Ontario (1995)
  • LL.B., Osgoode Hall Law School (1993)
  • Master in Environmental Studies, Environmental Land Use Planning, York University (1993)
  • B.A. (Hons.), Geography and Urban Studies, York University (1989)


  • The Law Society of Ontario—Member, Certified Specialist in Environmental Law (2004-)
  • Ontario Bar Association—Environmental Law Section Executive Committee member (1996-2014), Chair (2006-2008), Vice-Chair (2004-2006); Legislation Sub Committee member (1996-1998); Lender Liability Sub-Committee member (1996-1997); Co-Program Coordinator (2000-2001)
  • Canadian Bar Association—National Environmental, Energy and Resources Law Section Executive Committee member (1996-); Young Lawyers’ Division—Ontario Chair (1997-1998), Vice-Chair (1996-1997); member of the Executive (1995-1997)
  • American Bar Association—Toxic Torts and Environmental Law Committee Vice-Chair (2010-); member of the Environment, Energy and Resources Section and Toxic Tort & Insurance Practice Section (2010-)
  • Canadian Environmental Law Association, member (1988-)
  • Ontario Environmental Review Tribunal, former member of the Client Advisory Committee
  • Environmental Law Network (U.S.), member
  • Toronto Construction Association,  Environment Committee member (2003-)