Fact Sheet - 2018 Assessment Roll Return

  • MPAC delivers an assessment roll annually to municipalities and the Province of Ontario to support the calculation of property and education taxes.
  • 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.
  • In November, MPAC mailed more than 800,000 Property Assessments Notices to property owners reflecting changes in assessment that have taken place over the last year.

2018 Assessment Roll

  • Total number of properties on the Assessment Roll: 5,293,723
  • Total Current Value Assessment: $2.78 trillion

New Assessment

  • In 2018, MPAC captured $38.4 billion in new assessment
  • New assessment refers to new construction and/or additions to existing property that have not been assessed by MPAC

38.4 billion new assessment captured in 2018

Assessment summary by property type:

Property Type

Number of Properties

Total Value



$2 trillion



$126.2 billion



$303.75 billion



$109.6 billion



$135.64 billion



$107.85 billion

Breakdown of changes triggering a Property Assessment Notice:*

  • Ownership change - 378,631
  • School support - 280,906
  • Mailing address - 245,147
  • Property value - 183,643
  • Tax apportionment - 165,734

*Properties may have more than one change triggering a Property Assessment Notice.

Requests for Reconsideration:

  • If a property owner is concerned with their property’s assessment, MPAC will review it free of charge through a Request for Reconsideration (RfR)
  • From January 1 to October 31, 2018, MPAC completed a total of 27,917 RfRs. This reflects:
    • 20,843 residential
    • 1,508 farm
    • 4,780 business properties, and
    • and 786 of all other property types
  • The total number of RfRs represents 0.5% of Ontario’s more than 5 million properties

Media Contacts:  

Paula Chung, paula.chung@mpac.ca

Cathy Ranieri-Sweenie, cathy.ranieri-sweenie@mpac.ca

Customer Enquiries, www.aboutmyproperty.ca, 1 866 296-6722, TTY 1 877 889-6722

Note: The applicable law prevails to the extent there is any conflict between this information and the current law. This information is not intended to provide legal advice and should not be relied upon as such.