Property Assessment Appeal Checklist - Markham

Taxation and Finance Ontario 3 Minutes Read · published May 24, 2026 Flag of Ontario · By Daniel Roy

In Markham, Ontario, property assessment disputes start with the Municipal Property Assessment Corporation (MPAC) and may proceed to an independent tribunal. This checklist explains who can start an appeal, the two common routes (Request for Reconsideration with MPAC, then an appeal to the Assessment Review Board), typical timelines, required documents and how to submit papers in Markham.

Overview

Property assessments in Markham are prepared by MPAC; if you disagree with your assessed value you generally first request a review from MPAC and, if unsatisfied, file an appeal with the provincial tribunal that handles assessment matters. Read guidance from MPAC and the Assessment Review Board to confirm current steps for your property class and assessment year. MPAC[1]

Penalties & Enforcement

There are no criminal penalties for filing an appeal; this process concerns assessment values and tax calculations rather than bylaw fines. Specific monetary fines for filing or missing appeal steps are not specified on the cited pages. For enforcement related to tax non-payment or bylaw breaches that might follow an unchanged assessment, the City of Markham's tax and enforcement branches administer collections and related notices.

  • Fines/fees for appeals: not specified on the cited pages; see MPAC and the tribunal for fee details where published.[1]
  • Deadlines for review/appeal: variable by notice and tribunal rules; specific statutory time limits are not specified on the cited MPAC/tribunal landing pages and must be confirmed on the related application form pages.[2]
  • Enforcer/decider: MPAC administers assessments; an independent tribunal (Assessment Review Board or its current tribunal host) decides appeals.[3]
  • Inspection and complaint pathways: complaints about assessment start with MPAC; collection or tax enforcement is handled by the City of Markham Finance/Taxation office (see Help and Support below).
  • Non-monetary outcomes: tribunal orders changing assessed value, directions to MPAC, or case dismissal; court enforcement may follow for tax arrears.
If a deadline has passed, confirm whether relief or late filing is available before taking further steps.

Applications & Forms

Common filings and where to submit them:

  • Request for Reconsideration (RFR) with MPAC - used to ask MPAC to review an assessed value; submit online through MPAC’s portal or by the form indicated on MPAC’s site.MPAC RFR details[2]
  • Appeal to the Assessment Review Board (tribunal) - if MPAC review does not resolve the dispute, file an appeal with the tribunal indicated by provincial guidance; check tribunal filing rules and form names on the tribunal site.Assessment Review Board - tribunals site[3]
  • Filing fees: if fees are required, they will be listed on the tribunal or MPAC forms page; not specified on the cited overview pages.[2]
Keep copies of all MPAC notices, tax bills, and supporting evidence such as recent appraisals.

Action steps:

  • Check your assessment notice date and start the RFR process promptly.
  • Assemble evidence: sales comparables, income/expense records for income properties, photographs and building permits.
  • If MPAC’s RFR outcome is unsatisfactory, file the tribunal appeal within the time limit shown on tribunal instructions.
  • Contact MPAC or the tribunal registrar for procedural questions before filing.

FAQ

Who can file a property assessment appeal in Markham?
Property owners and authorized agents may request a review from MPAC and, if necessary, appeal to the provincial tribunal that hears assessment matters.[1]
What is a Request for Reconsideration (RFR)?
An RFR asks MPAC to review an assessed value before a tribunal appeal; you submit supporting documents to MPAC via their RFR process.[2]
Where do I file an appeal if MPAC review does not resolve it?
File the appeal with the Assessment Review Board or the tribunal that handles assessment appeals in Ontario, following the filing instructions and deadlines on the tribunal site.[3]

How-To

Steps to file a typical assessment appeal:

  1. Review your assessment notice and record the issue you dispute (value, classification, property description).
  2. Gather evidence: comparable sales, income statements, building permits, photos and any municipal records.
  3. Submit an RFR to MPAC through their online portal or form and await MPAC’s response.
  4. If unsatisfied with MPAC’s decision, prepare and file an appeal with the Assessment Review Board per tribunal filing rules.
  5. Attend any case conferences or hearings and follow tribunal directions; the tribunal issues a binding decision.
Document submission deadlines vary by notice and tribunal rules; always confirm dates on the official form pages.

Key Takeaways

  • Start with MPAC’s Request for Reconsideration before appealing to the tribunal.
  • Collect clear evidence and maintain organized records for hearings.
  • Follow tribunal filing rules and deadlines precisely to preserve appeal rights.

Help and Support / Resources

  1. [1] MPAC - Municipal Property Assessment Corporation
  2. [2] MPAC - Request for Reconsideration (RFR) details
  3. [3] Tribunals Ontario - Assessment Review Board

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Daniel Roy

Daniel Roy

Municipal Bylaw Analyst

Daniel analyses municipal bylaws across Canadian provinces and territories. He checks every guide against official municipal and provincial sources.