Assessment roll

2021-2022-2023 new property assessment roll

To consult the public notice, click here

The new three-year property assessment roll has been tabled and is available for consultation by clicking here

This new assessment roll, which reflects market conditions on July 1st, 2019 will go into effect on January 1st, 2021.     

Real estate values have grown by 4.80%, increasing from $2.84 billion when the assessment was conducted to $3.02 billion. The real estate portfolio consists of 5,543 assessed units.  

Main variations by real estate category
Variations in values represent the evolution of the real estate market between July 1st, 2016 and July 1st, 2019.    The real estate sector alone accounts for 74.19% of real estate values as a whole. The increase in the overall taxable value of properties in this sector, all categories considered, grew by 6.31%. The value of single-family homes, meanwhile, increased by 7.38%.    The taxable value of non-residential properties dropped by an average of 1.23%.  Finally, the value of vacant taxable properties increased by 6.04%. This category consists mainly of vacant lots. 

Increase in value by categories

Breakdown of the 2021-2022-2023 roll

Average value of a single-family home


The owners have until April 30, 2021 to contest their new assessment for 2021-2022-2023. They must fill out the “Administrative review of municipal property assessment” form in the Forms section and submit it to the Finance Department by the deadline (along with a non-refundable fee). If property owners don't agree with the new assessment, they may submit their case to the Tribunal administratif du Québec.

By mail:
Finance Department 
Property Assessment Review 
100 Charbonneau Street
Rosemère (Québec) J7A 3W1

From $0  to  $500,000 = $80.55
From $500,001 to $2,000,000 = $322.05
From $2,000,001 to $5,000,000 = $536.75
From $5,000,001 and over = $1,073.50

Choose the type of assessment roll you wish to access:

The assessment roll consists of a summary of the inventory of real estate properties on the territory. It indicates the value of each property based on its real value and real estate market conditions at a specific date: July 1 of the year preceding the tabling of the assessment roll. Once established, this value serves as the basis for determining the municipal tax.

The expression "triennial roll”, sometimes used as a synonym for "assessment roll”, results from the fact that data is valid for a period of three years, unless modifications have been made to the property.

About the appraiser’s job

The real estate assessment is produced by a chartered appraiser and his collaborators.

The appraiser’s work is governed by:

  • the Act respecting municipal taxation and its regulations
  • practice standards of the "Ordre des évaluateurs agréés du Québec” (Québec Order of Chartered Appraisers)
  • Québec property assessment manual.

The appraiser’s job consists in:

  • producing an inventory of real estate properties located on the municipality’s territory and establishing their true value,
  • identifying, on site, the physical characteristics of the properties such as the size of the land and its building, the architecture, materials and characteristics of the location
  • obtaining information related to the properties’ income and expenditures in the case of buildings producing rental income: industrial, commercial or multi-residential-type buildings.

At least every nine years, the appraiser must confirm the accuracy of the data for each unit evaluated, as required by article 36.1 of the Act respecting municipal taxation.

Visit of your property

The appraiser must revise the assessment roll to take into account events such as the addition or removal of materials or components (garage, pool, finished basement, demolition, etc.) covered by the Act respecting municipal taxation, which could modify the value of your property.

Free access to your property is essential, therefore, for establishing its true value. The appraiser or his representative must be allowed to visit your property, examine it and ask questions needed to complete the file on your property. LBP Évaluateurs agréés is the firm mandated by the Town to carry out this work.

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