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. He is a certified specialist in construction law and holds a civil engineering degree. His practice is focused on construction law and civil litigation, with an emphasis on construction matters, commercial disputes, condominium law, insurance, product liability and professional responsibility.

He has represented many parties in the construction industry, including financial institutions, owners, contractors, subcontractors, material suppliers, entrepreneurs, engineers, manufacturers, building officials and home inspectors.

Louis-Pierre appears frequently before the Superior Court of Justice and Court of Appeal for Ontario and provides guidance to his clients throughout the litigation process.

He is ranked in The Best Lawyers in Canada for his leadership and expertise in the area of construction law.

Prior to beginning his law career, Louis-Pierre spent a year in France at the Institut National des Sciences Appliquées de Lyon studying engineering. Following his articles, he spent six months in Hong Kong working as a research assistant and political attaché.

Fluently bilingual, Louis-Pierre practises law in both English and French.

Louis-Pierre is a founding member of the Ottawa Young Construction Leaders of the Ottawa Construction Association.

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.

Insights & Resources

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.