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Sidney H. Troister, LSM

Tel: 416 777 5432 Fax: 1 888 312 0072

A senior partner in our Commercial Real Estate Group, Sidney has a very broad business and commercial law practice.

In addition to his traditional real estate law practice involving the purchase, sale and financing of commercial property, he is consulted regularly by industry, title insurers and lawyers for his expertise and his practical and creative approach to real estate problem solving, trouble shooting, and getting deals done. He also serves as counsel to the Lawyers’ Professional Indemnity Company and title insurers, providing opinions, strategy and litigation support regarding the standard of practice of real estate lawyers in Ontario. He is also an arbitrator and mediator of real estate and commercial leasing disputes.

He is considered one of the leading members of the Ontario real estate bar. From 1990 to 2000, he was the co-head of the Real Estate Law section of the Ontario Bar Admission Course. He continues to chair the Law Society of Ontario's annual Real Estate Law Summit which he founded in 2004. A noted teacher, he is a frequent speaker at continuing legal education programmes for the Law Society, the Ontario Bar Association, and many local Ontario law associations on a wide range of real estate law-related topics.

In 2008, he was awarded the Law Society Medal for his contribution to the practice of law in Ontario.

Sidney is the author of "The Law of Subdivision Control in Ontario", a text on Section 50 of the Planning Act and is generally considered by Ontario lawyers as the leading expert on subdivision control in the province. He co-authored "Real Estate Conveyancing in Ontario: A Nineties Perspective", for the Lawyers’ Professional Indemnity Company, which analyzed the role of lawyers in real estate transactions in Ontario. He is a contributing author to "Agreements of Purchase and Sale" and to the 5th edition of "Falconbridge on the Law of Mortgages".

Sidney has authored special bulletins for the legal profession on mortgage fraud in real estate transactions, published annotations on leading judicial decisions and issued cautions to the profession on the standard of real estate practice. He is a past member of the Executive of the Real Property Section of the Ontario Bar Association and was the co-chair of the 2002 Special Lectures of The Law Society of Upper Ontario. He chairs The Law Society of Ontario’s Annual Real Estate Law Summit. In 2015, he was elected a Bencher (governor) of the Law Society of Upper Canada. Much in demand as a speaker, Sidney has been a leader and educator in continuing education programmes for lawyers in Ontario.

Visit my Real Estate Dispute Resolution site  


Awards & Recognition


Community Involvement



Best Lawyers Award Badge


Canadian Legal Lexpert Directory


  • The Advocates’ Society Mediation Workshop, July 1997
  • Arbitration and Mediation Institute of Ontario Inc; Arbitration Course Part 2, December, 1995
  • LL.B., Osgoode Hall Law School at York University, 1972
  • B.A., York University, 1969
  • Osgoode Hall Law School of York University – The Prize in Income Tax 1972
  • York University Entrance Scholarship 1966


  • Certified by the Law Society of Upper Canada as a Specialist in Real Estate Law 2004
  • Called to the Ontario Bar, 1974
  • Designated Chartered Arbitrator (C. Arb.): ADR Institute of Canada

Publications & Presentations


Real Estate Law & Practice Bulletin

Torkin Manes LegalPoint: First-Time Homebuyers Rebate - Lawyers Beware
May 16, 2016

13th Annual Real Estate Law Summit

Chair, The Law Society of Upper Canada
Apr 20, 2016

Real Estate Law & Practice Bulletin

Torkin Manes LegalPoint: First-Time Homebuyers Rebate - Lawyers Beware
Nov 2, 2015

Real Estate Law Update

Torkin Manes LegalPoint: Encroachments on Rights of Way
Jun 25, 2015

News & Media

Firm News

Torkin Manes lawyers featured in The Best Lawyers in Canada© 2019

The Best Lawyers in Canada We are pleased to announce that 22 of our partners have recently been recognized as leaders.
Aug 21, 2018
In the News

Don't fall for the old 'It's standard' line from a real estate agent. There's nothing standard about their forms — Sidney Troister speaks to the Financial Post

If unaffordable prices, bidding wars and news that the real estate industry is supplying questionable statistics to the public isn’t enough, hom...
Jul 26, 2018
Firm News

Sidney Troister to speak at the Ontario Association of Committees of Adjustment and Consent Authorities Annual Conference

Join Sidney Troister on June 4th at the annual Ontario Association of Committees of Adjustment and Consent Authorities conference, where he will speak...
Jun 21, 2018

Sidney Troister to speak at the County of Carleton Law Association’s 24th East Region Solicitors Conference

This 1.5 day program covers a wide-range of topics to update attendees on current practicing trends.
May 4, 2018


Back to Planning Act Basics: 90 Minutes on Section 50

Do you have a question for Sid Troister, renowned as a Planning Act guru? This is your chance! First, he delves into detail on section 50, h...
Jan 22, 2019: 12:00 - Dec 10, 2018: 13:30