Skip to content


CAO Guide to Returns: Before Filing

Condo corporations are legally required to file returns with the Condo Authority of Ontario.

Learn more about condo returns, notices of change and the steps involved before filing a return.

You will also find a checklist at the end of the guide to ensure you have all the required information before you file.

What are condo returns?

A condo return is a document which includes specific information about the condo corporation such as the date it was registered, its address for service and information about the condo board of directors.

Read the CAO’s article on condo returns to learn more about types of condo returns, frequency and deadlines.

What is a notice of change?

A notice of change is a document which must be filed within 30 days when certain information in a filing has changed or needs to be corrected. For more information, please read the CAO’s article on notices of change.

How will the information in condo returns be used?

Condominium corporations must ensure that the information provided in their condo returns is current and accurate because it is included in the CAO Condo Registry and used to determine the annual assessment fee payable to the CAO.

The filing process

  1. Create an account or log in– You will need an account and the ability to act on behalf of your condo corporation to file condo returns or notices of change. Learn how to create an account.
  2. Review the Condo Authority’s filing guides:
  3. Gather your information — You’ll need to provide specific, current information about your condo corporation, outlined in this Summary of the Information Required for Condo Returns and Notices of Change.
  4. File your condo return or notice of change.


How can we make this guide better?

Provide your feedback
Icon of a survey

Stay in the know with CAO!