Welcome to Canada's first fully online tribunal!

The Condominium Authority Tribunal, or the CAT, is a new online tribunal that helps to settle and decide condominium-related disputes in Ontario.  The CAT has developed an online dispute resolution system (CAT-ODR) to help people resolve their disputes conveniently, quickly and affordably, while encouraging everyone to work together in healthy condominium communities.

As of November 1, 2017, anyone with a dispute about the records of a condominium corporation in Ontario can file a case at the CAT. Records disputes are covered by section 55 of the Condominium Act, 1998.

The CAT Process

This information will help Users prepare to file or join a case at the CAT. It describes the CAT process and tells you what to do before you file a case, how to file or join a case, and what happens next.

CAT Rules, Policies and Guides

The CAT shares its rules and policies to help you understand how the CAT and its Members will operate, as well as what you need to know if you are involved in a dispute that now involves the Tribunal.

CAT Members

The Members of the CAT have been appointed to the Tribunal to mediate or to hear and decide on applications. Meet the Chair, Vice-chair and the eleven Members, and read the Chair’s message.


File a new tribunal case

Please note that currently you can only file a case for records-related disputes .

Join a tribunal case

If you have been asked to join a tribunal case, you need to register for a personal profile to join.

Access an existing tribunal case

If you want to access an existing tribunal case, login with your existing personal profile.