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John Mascarin



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Admitted to the Ontario Bar: 1989

John is a partner and a member of the Municipal and Land Use Planning Group.

PracticeJohn practises in the areas of local government and municipal law, development, land use and planning law, and building and construction regulation. He provides advice, counsel and representation to both private and public sector clients on all matters relating to municipal law as well as land use planning and development matters, including development charges, building regulatory matters and various contractual arrangements. John appears regularly before municipal councils, committees, public authorities and boards, administrative tribunals (particularly the Ontario Municipal Board) and the Ontario Courts. He is an acknowledged expert on the Municipal Act, 2001 and on matters pertaining to municipal powers, authorities and jurisdiction. John's opinions and comments respecting municipal law are much sought after by the media as demonstrated by his many interviews on television and radio as well as in numerous print sources.

Special Designations

Recognized in The Best Lawyers in Canada in the fields of Municipal Law and Real Estate Law and named the Best Lawyers' 2016 Municipal Law “Lawyer of the Year” for Toronto.

Appears in The Canadian Legal Lexpert Directory as a leading practitioner in the area of Property Development.

Certified Specialist in Municipal Law: Local Government and Land Use Planning and Development by the Law Society of Upper Canada.

IMLA President's Award for Most Outstanding Associate Member (2011) Lifetime Honourary Membership – Canadian Association of Certified Planning Technicians (2009).

Professional Activities


A Comprehensive Guide to the City of Toronto Act (with Leo Longo)
Annotated Ontario Building Code Act (with Jeffrey Levitt)
Annotated Land Development Agreements (with Paul De Francesca)
Ontario Municipal Act and Commentary (with Christopher Williams)
Annotated Municipal Act (2nd Edition) (with Stephen Auerback)


Editor-in-Chief, Municipal & Planning Law Report (1995-present)
Editor-in-Chief, The Digest of Municipal & Planning Law (1990-present)
Co-Editor-in-Chief, Real Property Reports (1992-present)
Former Editor, Digest of Real Property Law (1991-1993)


Halsbury's Laws of Canada – Municipal
Ontario Planning Act and Commentary
Ontario Land Development: Legislation and Practice
Canadian Commercial Real Estate Manual
Practice and Procedure Before Administrative Tribunals
Canadian Abridgment
(Municipal Law Real Property Titles)

John's numerous articles, commentaries and papers have been extensively published and he is a frequent speaker at professional, industry and continuing legal education conferences.

MembershipsCanadian/Ontario Bar Association (Past Chair, Municipal Law Section)
Canadian Association of Certified Planning Technicians
International Municipal Lawyers Association (Associate Member)

Teaching Engagements

Adjunct Professor (2008-2016) – “Land Use Planning Law”
York University – Faculty of Environmental Studies – M.E.S. Program
Osgoode Hall Law School – J.D. Program

Adjunct Professor (2014 and 2016) – “Municipal Law”
Osgoode Hall Law School – J.D. Program

Guest Lecturer (2008-2016) – “Securing Public Benefits from Urban Development”
Ryerson University – School of Urban & Regional Planning – M.E.S. Program

Course Director (2006, 2011 and 2015) – “Municipalities in a Legal & Policy Context”
Osgoode Hall Law School – LL.M. Program

Guest Lecturer (2015) – “Land Use Planning Law”
University of Windsor, Faculty of Law – J.D. Program

Course Director (2012) – “Ethics and Municipalities”
Osgoode Hall Law School – LL.M. in Municipal Law

Course Director (2010) – “Land Use Regulations & Property Development”
Osgoode Hall Law School – LL.M. in Real Property Law

Guest Lecturer (2007-2008) – “Land Development”
Schulich School of Business – M.B.A. Program

Guest Lecturer (2005 and 2007) – “Land Use Planning Law”
York University – Faculty of Environmental Studies – M.E.S. Program


LL.B., Osgoode Hall Law School, 1987
M.A., University of Toronto, 1984
B.A., University of Toronto, 1983

*Practising as a professional corporation