Assessment Appeal

Learn how to file an assessment appeal in Canada, when it's worth doing, and how it can lower your property tax bill.

Assessment Appeal

May 22, 2025


What is an Assessment Appeal?

An assessment appeal is the formal process by which a property owner challenges the assessed value of their property as determined by a municipal or provincial authority.

Why Assessment Appeals Matter in Real Estate

In Canada, assessed values are used to calculate property taxes. If a homeowner believes their assessed value is too high or based on incorrect information, they may file an appeal.

Assessment appeals may be filed when:

  • The assessed value exceeds the home’s market value
  • There are factual errors (e.g., wrong square footage)
  • Comparable properties are assessed lower

The process typically involves:

  • Reviewing the assessment notice
  • Filing a formal appeal by the deadline
  • Presenting evidence (e.g., sales data, appraisals)
  • Attending a hearing or review board meeting
Successful appeals can lower property taxes. However, appealing does not always guarantee a reduction and may require time and documentation. Understanding how to appeal ensures fair taxation and helps homeowners hold municipalities accountable for valuation accuracy.

Example of an Assessment Appeal in Action

A homeowner in Ottawa files an assessment appeal after discovering nearby homes with similar features are assessed $50,000 lower.

Key Takeaways

  • Challenges a property’s assessed value.
  • Filed through municipal or provincial authorities.
  • Requires evidence and a formal process.
  • Can lead to reduced property taxes.
  • Must be submitted before deadlines.

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