MPAC mails more than 800,000 Property Assessment Notices across Ontario

The Municipal Property Assessment Corporation (MPAC) has begun mailing over 800,000 Property Assessment Notices to property owners across Ontario. The notices reflect changes in assessment that have taken place over the last year.

While 2018 is not a province-wide Assessment Update year, MPAC continues to review properties and update property information on a regular basis  in order to return an accurate assessment roll each year.

“At MPAC, we take our responsibility seriously because our assessments provide the very foundation that municipalities use to base the property taxes needed to pay for the services we use every day,” said Carmelo Lipsi, Vice President of Valuation & Customer Relations and Chief Operating Officer. 

This year, property owners will receive a Notice from MPAC if there has been a:

  • property value increase/decrease reflecting a change to the property; for example, a new structure, addition, or removal of an old structure;
  • change to property ownership, legal description, or school support;
  • change to the property’s value resulting from a Request for Reconsideration, an Assessment Review Board decision, or ongoing property reviews; or
  • change in the classification or tax liability of the property.

“We encourage property owners to visit to learn more about how their property was assessed, see the information we have on file and compare it to others in their neighbourhood,” added Mr. Lipsi. “If a property owner is still concerned with their property’s assessment, we will review it free of charge through a Request for Reconsideration (RfR).” 

Property owners can login to using their Roll Number and Access Key, which can be found on their Property Assessment Notice. For greater convenience, RfRs can also be filed directly through Property owners have until April 1, 2019 to file an RfR for the 2019 property tax year.

More information on the 2018 Property Assessment Notices is available at

Quick Facts

  • In 2016, every property owner in Ontario received a Property Assessment Notice as the result of a province-wide Assessment Update, reflecting a legislated January 1, 2016 valuation date. 
  • The 2016 assessed value is the basis for property taxes for the 2017-2020 property tax years.
  • Assessment Updates are phased in gradually over four years. Under the phase-in provision in the Assessment Act, an increase in assessed value is introduced gradually. A decrease in assessed value is introduced immediately.
  • MPAC continues to review and update property assessment information in non-Assessment Update years. 
  • Properties change ownership, new homes or additions are built, structures are removed or demolished and properties change use. Notices are mailed each year to reflect these changes.

About MPAC

The Municipal Property Assessment Corporation (MPAC) is an independent, not-for-profit corporation funded by all Ontario municipalities, accountable to the Province, municipalities and property taxpayers through its 13-member Board of Directors. Our role is to accurately assess and classify all properties in Ontario in compliance with the Assessment Act and regulations set by the Government of Ontario.

We are the largest assessment jurisdiction in North America, assessing and classifying more than five million properties in Ontario, representing $2.59 trillion in property value. Our assessments provide the foundation that municipalities use to base the property taxes needed to pay for community services.

For more information, about 2018 Property Assessment Notices mailed this fall, visit

Media Contact

MPAC is committed to providing the media with timely, accurate and comprehensive information about property assessment in Ontario.

For all media inquiries, please contact:

Customer Inquiries

1 866 296-6722
TTY 1 877 889-6722