Matthew R. Alter
Cassels Brock & Blackwell LLP
Recognized since 2008
Toronto, Ontario
Construction Law
Public Procurement Law


Matthew Alter* is a partner in the Litigation Group at Cassels and a member of the Construction Law and Infrastructure Law teams, ranked Band 1 by Chambers Canada for his expertise. Matthew’s practice focuses on representing public and private owners and developers, general contractors, and other construction industry participants in all aspects of construction and procurement. He advises clients on project delivery methods and procurement processes and drafts and negotiates various agreements for construction and infrastructure projects and related acquisitions, including Public-Private Partnership arrangements. Matthew also represents industry participants in all types of contract and project disputes and litigation, including: tendering claims and defences, contractor defaults, interference and delay claims, liens, trust claims, insolvency claims, and surety bond claims. Recognized internationally as a top construction and procurement lawyer, Matthew is certified as a Specialist in Construction Law by the Law Society of Ontario and is proud to have served as a past President of the Canadian College of Construction Lawyers.
Select recent publications and presentations include:
- Chair: The Modern Construction Law Landscape, 22nd Annual Meeting of the Canadian College of Construction Lawyers, Niagara-on-the-Lake (May 2019)
- Speaker: Implications of Prompt Payment for Construction, 2019 Construction Adjudication Symposium, Toronto (May 2019)
- Co-Author: Construction and Projects in Canada, Thomson Reuters for Practical Law (March 2019)
- Speaker: Looking Through Different Lenses: Tactical and Technical Concerns When Representing the Owner or the Contractor, ABA Forum on Construction Law 2019 Fall Meeting, Montreal (October 2018)
- Speaker: Practical Considerations: The Ultimate Payee’s Perspective, Osgoode Professional Development (April 2018)
- Speaker: Pre-litigation Claim Management, Construction & Infrastructure Litigation 201, OBA Institute (February 2018)
*Services provided through a Professional Corporation
- Lawyer Page: https://cassels.com/our_team/Matthew-R-Alter/
- Suite 3200, Bay Adelaide Centre – North Tower, 40 Temperance Street
Toronto, ON M5H 0B4
Canada
- English
- Ontario, The Law Society of Upper Canada
1 The Best Lawyers in Canada™ award


- Public Procurement Law, Toronto, Canada (2018)
- Public Procurement Law, Toronto, Canada (2015)
- Construction Law
- Public Procurement Law
- The Best Lawyers in Canada: Lawyer of the Year 2015 (Public Procurement Law)
- The Legal 500 Canada (Public Procurement)
- Legal Media Group Guide: Best of the Best (Global) (Construction)
- Chambers Global (Construction)
- Canadian Legal Lexpert Directory (Construction Law)
- Who's Who Legal: Canada (Construction and Public Procurement)
- Lexpert/American Lawyer Guide to the Leading 500 Lawyers in Canada (Construction Law)
- The Best Lawyers in Canada (Construction Law; Public Procurement Law)
- Lexpert Special Edition: Canada's Leading Infrastructure Lawyers
- Chambers Canada (Construction)
- Martindale-Hubbell, AV Preeminent™ Peer Review Rating
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