Residential Property Assessment in Ontario

Click here to view an informative presentation on how MPAC assesses residential properties.  

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. Their experts work in  33 offices located across the province.

MPAC 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 North America.

Property Information

In addition to sales, MPAC 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; and
  • income and expense information (for apartment buildings, hotels and others).

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.

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
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

Property Classification

In addition to valuing your property, MPAC also classifies your property. There are seven major property classes: Residential, Multi-Residential, Commercial, Industrial, Pipe line, Farm and Managed Forests. There are also several sub-classes for properties with specific or unique characteristics.

Some properties may belong to more than one class. For example, if a small business is being operated out of the home, the property would fall into two classes (Residential and Commercial).

A Simple Test

To find out if your assessed value is accurate, simply ask yourself this question – could you have sold your property for its assessed value on the valuation date listed on your Property Assessment Notice?  If the answer to this question is yes, then your assessed value is probably correct.

MPAC want to make sure the classification and assessed value of your property are accurate.  If you don’t think they are, call MPAC .

To Learn More

You can obtain detailed information about your property and information on up to 24 additional properties of your choice and up to six selected by MPAC, free of charge.  To do so, visit AboutMyProperty™,

You may also send a written request to:


Attention: GRAD
P.O. Box 9808
Toronto; ON M1S 5T9
Fax: 1 866 297-6703

Property Taxes

When your municipality/local taxing authority sets property tax rates, they are applied to the assessed value of your property to determine your property taxes.  Questions about your local tax rate should be directed to your municipality/local taxing authority.  Education tax rates, which are set by the Ontario Government, are also applied to the assessed value when determining property taxes.

Note: The information contained in this brochure has been developed to provide the public with a general understanding of the legislation respecting the assessment of residential properties.  The applicable law prevails to the extent there is any conflict between this brochure and the current law.  This brochure is not intended to provide legal advice and should not be relied upon as such.

Click here for a printable PDF version of the Residential Property Assessment Brochure.

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