Louis-Pierre Grégoire Partner National Litigation Lead - Construction & Infrastructure

Speaks:  English, French

Year of Call: 2002 - Ontario

Primary phone: +1 613-786-0110

Fax: +1 613-788-3636

Email: louis-pierre.gregoire@gowlingwlg.com

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Primary office:  Ottawa

Louis-Pierre Grégoire

Louis-Pierre Grégoire is a partner in Gowling WLG’s Ottawa office. His practice focuses on construction law and civil litigation. He advises many parties in the construction industry, including financial institutions, owners, contractors, subcontractors, material suppliers, entrepreneurs, consultants (engineers and architects), manufacturers, building officials and home inspectors.  

Louis-Pierre is a Certified Specialist in construction law by the Law Society of Ontario and he holds a civil engineering degree. He is an active member of trade and industry associations, including as a founding member of the Ottawa Young Construction Leaders, a youth-focused networking group within the Ottawa Construction Association.  Louis-Pierre is also a frequent speaker on various topics related to the construction sector, including, in particular, the modernization of the new Construction Act in Ontario.

Louis-Pierre practises in both English and French.

Career & Recognition

Filter timeline:


  • Association des juristes d'expression française de l'Ontario
  • Canadian Bar Association
  • Ottawa Construction Association
  • The Advocates' Society
  • The Law Society of Upper Canada
  • Toronto Construction Association
  • "Get ready for Bill 142!" OCA Construction Comment, June 2017.
  • “Municipal Liability: Building Construction and Inspection Issues," co-authored, 54 C.L.R. (3d) 9, 2006.

Previous speaking engagements

Representative Work

  • Represented a major Canadian airline in connection with a $2 million claim against consultants for design errors.
  • Represented a teaching hospital in Ottawa and a general contractor in a series of proceedings in connection with a $10 million claim for electrical design errors committed by professional consultants (engineers and architects) in a renovation project.
  • Defended the interests of the City of Ottawa in a civil action concerning the title of a property.