Property Assessment

All properties in Ontario are assessed by the Municipal Property Assessment Corporation (MPAC), using current market valuation. 

MPAC’s main responsibility is to accurately value and classify all properties in Ontario according to the Assessment Act and regulations established by the Ontario Government.

Properties are assessed every four years, a Property Assessment Notice is issued to every property owner and assessment values are phased in over a four year period.

To establish your property’s assessed value, MPAC analyzes property sales in your community to determine the Current Value Assessment (CVA).  For residential properties, they consider all of the key features which affect market value. 

Five of the major factors that usually account for 85% of the value are:

  • location;
  • lot dimensions;
  • living area;
  • age of the structure(s), adjusted for any major renovations or additions; and
  • quality of construction

MPAC is also responsible for the classification and assessment of Farm, Commercial, Industrial, Multi-Residential, Pipe line and Managed Forest property types. 

MPAC has developed a site to access more details and learn more about your property: 

If you disagree with MPAC’s assessment or classification of your property, a Request for Reconsideration (RfR) form can be filed and MPAC will review your assessment, free of charge.

The deadline to file an RfR with MPAC is printed on your Property Assessment Notice. If you do not have your Property Assessment Notice, please contact MPAC at 1-866-296-6722 to request a copy.

To file a Request for Reconsideration, follow this link:

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