Click here to view an informative presentation on
how MPAC assesses residential properties. 
How MPAC assesses properties
Property Information
Key Features
How MPAC assesses properties
MPAC’s job is to accurately classify and value properties in Ontario in compliance with the Assessment Act and regulations established by the Ontario Government. To establish your property’s assessed value, MPAC’s assessment professionals analyze property sales in your area. These sales provide the basis for assessed values. Our experts understand local real estate markets and work in our 33 offices located across the province. We continually collect and update detailed information for every property in Ontario to ensure that similar property types are valued consistently within the market area. This method is called Current Value Assessment. It is used by most assessment jurisdictions in Canada and around the world.
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Property Information
In addition to sales, our experts regularly analyze property information through a number of sources, including:
- land title documents;
- building permits;
- on-site property inspections and communication with property owners;
- income and expense information (for apartment buildings or hotels); and
- real estate boards
MPAC's database contains over two billion pieces of data, and is one of the most detailed in the world. Like all assessing authorities, MPAC is able to determine accurate values for large groups of properties based on common data and mass appraisal techniques.
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Key Features In addition to recent sales, MPAC looks at the key features of every property. Although as many as 200 different factors are considered when assessing the value of a residential property, there are five major factors that account for 85% of the value: For more information, click on the name of the Key Feature.
Age of the House
Building Area
Location
Lot Dimensions
Quality of Construction
Some other key features may also affect the value. For more information, click on the name of the Key Feature.
Primary Structures
Secondary Structures (e.g. garages, sheds or inground pools)
Site Features
Structural Features
Click here for a printable PDF version of the Residential Property Assessment Brochure.
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