Welcome to Canada's first fully online tribunal! The Condominium Authority Tribunal, or the CAT, is an online tribunal that helps to resolve 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.

File a new application

Looking to file a new application with the CAT? Select your application type from the drop-down below and click "File Application" button.


Join a case

If you have received a Notice or invite to join a case, click the "Join" button.

Access an existing case

If you want to access an existing tribunal case or an application in progress, click the "Access" button.

The CAT Process

This information describes the CAT dispute resolution process and tells you how to file an application, how to join a case and what happens in each of the three dispute resolution stages.

CAT Rules, Policies and Guides 

The CAT's Rules describes how the CAT operates, and what you need to know or do when you are involved in a CAT case.

CAT Members

The Members of the CAT have been appointed to the Tribunal to mediate or to hear and decide on applications. This page includes bios on the Chair, the Vice-Chairs and the Members.