
John specializes in litigation, arbitration and mediation of construction disputes. He is certified
as a Specialist in Construction Law by the Law Society of Ontario and is a Fellow of the Canadian
College of Construction Lawyers.
Prior to co-founding Margie Strub Construction Law LLP, John was a partner and former
managing partner for a mid-sized construction law firm in downtown Toronto.
Since his call to the Bar in 1995, John has practiced exclusively in construction and surety bond
law, and his experience includes international construction disputes, construction claims,
construction liens, trust claims and surety bond claims. John has been involved in disputes
related to residential, infrastructure, industrial and commercial projects, including hydroelectric
projects, pipelines, mines, power plants, hospitals, waste and recycling treatment plants,
roadworks, sewer and watermain projects. John represents parties at all levels of the
construction pyramid.
John is a Fellow of the Canadian College of Construction Lawyers, the Chair of the College’s
Website Committee and a former Governor of the College. John is recognized by L’Expert as one
of 500 leading construction and infrastructure lawyers in Canada and is a repeatedly
recommended lawyer in the area of construction law by L’Expert. John is also recognized by Best
Lawyers. John also holds an Executive MBA from the Ivey Business School.
John is the author of several articles related to construction law, construction liens in Ontario,
the co-author of the Simplified Guide to Modernization of the Construction Lien Act and the co-
author of several articles on construction claims. John is also a frequent speaker at conferences
on construction law issues and recently, John was a panelist at the Canadian Institute Urban
Transit conference.
John and Joshua co-founded and taught, along with another colleague, the Construction Law
course at Western Law in London Ontario.
Experience
Representative Work
Transportation
- Representation of a rail works contractor regarding the Toronto-Pearson Express rail
project. - Representation of a contractor in an ad-hoc arbitration related to delay and cost
overrun claims regarding system integration of a microprocessor-based fixed-block
signalling system. - Representation of road builders in delay claims, lien claims and breach of trust claims
Energy
- Representation of a contractor in a multi-million dollar claim regarding time extension
and additional cost claims in respect of the construction of an electrical transformer
station. - Representation of a foreign contractor regarding the construction of a hydro-electric
project. - Representation of an international concrete supplier in a domestic ICC Arbitration
regarding the supply of concrete for a hydro-electric project. - Representation of a mechanical and electrical contractor with respect to claims for extra
work, delay and loss of productivity related to a co-generation project, an institutional
building and two automotive plants. - Representation of a heat energy system designer, fabricator and supplier in a multi-
million dollar lien claim and domestic ICC Arbitration regarding the construction of a
truss-joist plant.
Mining and Natural Resources
- Representation of a Canadian mine operator in a $200+ million international ICC
Arbitration regarding the design and construction of a power plant. - Representation of a Canadian mine operator in a $100+ million international ICC
Arbitration regarding the construction of a pipeline with respect to delay and additional
costs claims. - Representation of a mine owner in claims by its contractor regarding the construction of
a tailings dam facility including the representation of the mine owner in lien claims by
subtrades and claims by the mine owner against the surety. - Representation of a mine owner in domestic arbitrations and claims regarding six
matters in respect of a mine development project in Northern Ontario
Automotive and Assembly Facilities
- Representation of an automotive assembly line fabricator in a domestic arbitration
regarding a subcontractor mechanical claim. - Representation of a mechanical and electrical contractor with respect to claims for extra
work, delay and loss of productivity related to a co-generation project, an institutional
building and two automotive plants.
Institutional / Commercial Buildings
- Representation of a mechanical and electrical contractor with respect to claims for extra
work, delay and loss of productivity related to a co-generation project, an institutional
building and two automotive plants. - Representation of a pre-cast panel fabricator and installer including lien claims, delay
and loss of productivity claims.
Industrial / Mining
- Representation of a mechanical and electrical contractor for extras and delays regarding
the construction of a paper processing plant. - Representation of process equipment manufacturers regarding EPC claims in respect of
the construction of a multi-density fibre board plant. - Representation of mechanical contractor regarding the construction of an orientated
strandboard plant, including the defence of the mechanical contractor’s surety
regarding a multi-million dollar performance bond claim.
Professional Services
- Representation of insurer in professional liability cases regarding negligence claims
against lawyers in construction lien matters.
Select Reported Cases
- Prasher Steel Ltd. v. Pre-Eng Contracting Ltd., 2024 ONSC 4772 (Div. Ct.)
- MGW Homes Design Inc. v. Pasqualino, 2024 ONSC 2852 (Div. Ct.)
- MGW-Homes Design Inc. v. Pasqualino, 2024 ONCA 422
- H. R. Doornekamp Construction Ltd. v. Canada (Attorney General) (Department of Public Works
and Government Services), 2022 ONSC 2247 (Div. Ct.) - H.R. Doornekamp Construction Ltd. v. Attorney General of Canada, 2019 ONSC 3101
- Deslaurier v. Le Groupe Brigil, 2012 ONSC 3350
- B.R. Davidson Mining & Development Ltd. v. Lac des Iles Mines Ltd., 2003 CanLII 28537 (ON SC)
- Sesco Ltd. v. Life Centre (Non-Profit) Housing Corp. (Ajax), [1998] 37 OR (3d) 764 (Div. Ct.)
Awards and Recognition
Best Lawyers in Canada, Construction Law, 2025
Litigation Star, Benchmark Litigation, 2025
Professional Contributions
- Canadian College of Construction Lawyers, Fellow; Chair, Website Committee; Former Governor
- Law Society of Ontario, Certified Specialist in Construction Law
- Ontario Bar Association, Construction & Infrastructure Section, Recognized Speaker
- Canadian Institute, Urban Transit Conference, Panelist
- Western University, Faculty of Law, Co-Founder and Instructor, Construction Law Course
- University of Toronto, Author of Several Articles on Construction Law Topics
Speaking and Publications
Speaking Engagements
- Speaker, Selected Adjudication Topics, Ontario Wastewater Association Construction
Conference, February 6, 2020 - Speaker, Prompt Payment and Adjudication, Northern Colloquium, Sudbury Conference,
October 17, 2019 - Table Talk, Prompt Payment and Adjudication, Canadian Corporate Counsel Association,
October 3, 2019
- Table Talk, Modernization of the Construction Lien Act, Canadian Corporate Counsel
Association, March 27, 2019 - Client Seminars on Adjudication, Prompt Payment and Modernization of the Construction Lien
Act, November 2018 - The Consolidated Contractors Group Case, Society of Construction Law, North American
Chapter, The International Society of Construction Law, September 28, 2018 - Construction Lien Act Update, REALPAC 2018 Real Estate Law Course, September 11, 2018
- Panelist, Construction Claims: Working with Experts, Glaholt Leadership Series, Ivey Tangerine
Leadership Centre, Toronto, November 8, 2017 - Panelist, Leveraging the In-House and Outside Counsel Relationship, Construction
Superconference, Las Vegas, NV, 2016 - Panelist, International Arbitrations, CBA-National Construction Law Conference, Toronto,
September 20, 2014 - Guest Lecturer, Construction Trusts, Procedure under the CLA; Construction Contracts – Extras,
Notice and other Topics, York University LL.M. (Real Estate), Construction Law Module, 2010 - Speaker, Construction Lien Act, Selected Topics, Client Seminars, February 2006
- Speaker, Innovative Dispute Resolution, 15 th Annual Construction Superconference, Canadian
Institute, Toronto, November 22, 2005 - Speaker, Recent Developments in Construction Lien Law, Operation Up-Date, Ontario Bar
Association, Toronto, October 2005 - Co-Chair, 14th Annual Construction Superconference, Canadian Institute, Toronto, November
2004 - Speaker, Ontario’s New Limitations Act (J. Margie and M. Rotterdam), 14th Annual Construction
Superconference, Canadian Institute, Toronto, November 2004 - Speaker, Access to Information and Bidding and Tendering, 14th Annual Construction
Superconference, Canadian Institute, Toronto, November 2004 - Co-Chair, 13th Annual Construction Superconference, Canadian Institute, Toronto, November
2003 - Moderator, Criminalization of Safety Violations, 13th Annual Construction Superconference,
Canadian Institute, Toronto, November 2003
Select Publications
Procedural Fairness and Adjudication Under Ontario’s Construction Act
Prompt payment on P3 projects: a gap in the Construction Act
Avoiding Discovery Obligation Pitfalls
Priorities for Liens and Arrears of Prior Mortgages
Public-Private Partnerships and the Allocation of Risk
The Transition Provision – Know Which Act Applies
Project Bank Accounts: Their Time Has Come
Education and Admissions
Education
- University of Western Ontario, MBA, 2010
- University of Wales, College of Cardiff, LL.B., 1991
- University of Western Ontario, B.A. Hons., 1987
Bar Admission and Certifications
- Ontario Bar, 1995