Alain Castonguay

Alain Castonguay

Partner, Notary, Legal Advisor

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French version is available here.

Alain Castonguay is a co-leader of our Real Estate strategic team and a member of the Wealth Protection strategic team as well as of the Mergers and Acquisitions team.

Mr. Castonguay has broad experience in notarial law related to business, and more specifically in the fields of financing, acquisition and sale of commercial, industrial and multi-unit residential buildings, land assembly, development, management, construction of commercial, industrial, residential and mixed use real estate assets, the drafting and negotiation of contracts and agreements, and estate law. He serves a business clientele primarily comprised of large institutions, promoters and entrepreneurs.

Professional affiliations

  • Canadian Bar Association
  • Chambre des notaires du Québec
  • Urban Development Institute of Québec

Representative work

Mr. Castonguay has recently participated, on behalf of the federal government (Department of Justice), to the acquisition by Her Majesty the Queen in Right of Canada, Department of Public Works, of the International Civil Aviation Organization (ICAO) headquarters in Montréal.


Very active in his professional community, Mr. Castonguay has gotten involved in various organizations since the beginning of his career. He has been a member of the board of directors of the Association de planification fiscale et financière. Mr. Castonguay has also published articles in the Revue du Barreau and was a member of the committee of the Chambre des notaires du Québec in charge of preparing a factum to be submitted to the Government of Quebec.


514 397-6906

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25th Floor
1100 René-Lévesque Blvd West
Montreal, Quebec   H3B 5C9
tel. : 514 397-8500
fax : 514 397-8515