LAWYER PROFILE

Mark St. Cyr

Canada 2026

Cassels Brock & Blackwell LLP

Ranked in 1 practice area

Construction

Nationwide - Canada

4 years ranked

About

Provided by Cassels Brock & Blackwell LLP

Canada

Practice Areas

Provides strategic and practical legal advice to clients at any stage of a construction project. Advises clients on how to navigate and redistribute project risks from initial concept, through design, procurement, and construction. Counsels clients on how to navigate and redistribute project risks. Broad drafting, negotiating, and solutions-driven experience. Represents clients on a wide variety of projects across nearly every industry, throughout Ontario, the rest of Canada, and several other parts of the world. Practice includes both “front-end” project structure and delivery advice, as well as “back-end” dispute resolution. Recognized as a leader in his field by Best Lawyers and Lexpert.

Chambers Review

Provided by Chambers

Chambers Canada Guide

Construction - Nationwide - Canada

Band 4

Individual Editorial

Mark St. Cyr is a Toronto-based lawyer at Cassels Brock & Blackwell with a non-contentious construction practice. He has noteworthy experience providing legal guidance to municipalities and educational providers on a host of construction projects.

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Strengths

Provided by Chambers

Mark is timely, practical and provides creative advice.
ConstructionChambers Canada Guide
Mark has been an excellent partner and I would have no issues in recommending him on commercial, contracts or strategies to support the business at the speed the business requires.
ConstructionChambers Canada Guide
Mark St. Cyr has provided excellent procurement and contract support for projects and is highly regarded by our procurement team. He provides tremendous support and is well respected.
ConstructionChambers Canada Guide
Mark always goes above-and-beyond. He is always aware of the legal and commercial needs of the firm and will always go the extra mile to get our projects built.
ConstructionChambers Canada Guide