Property Assessment Methods - Markham, Ontario

Taxation and Finance Ontario 4 Minutes Read · published May 24, 2026 Flag of Ontario

In Markham, Ontario property owners rely on municipal and provincial systems to determine assessed value and tax obligations. This guide explains common valuation approaches used by assessors, how municipal processes interact with provincial assessment, and practical steps to request reviews or appeal assessments. It highlights the offices responsible, the forms commonly used, enforcement pathways, and where to find official notices and contacts for Markham residents.[1]

How valuation works

Assessments used for municipal taxation in Markham are based on provincially administered assessment frameworks and municipal tax policies. Common valuation approaches applied by assessors and appraisers include the sales comparison (market) approach, the income approach for income-producing properties, and the cost approach for newer or special-use properties. Local assessment notices and municipal tax calculations reference assessed values determined or confirmed by the provincial assessment authority.[2]

  • Sales comparison (market) approach: value derived from recent comparable sales.
  • Income approach: capitalization of net income for rental or commercial properties.
  • Cost approach: replacement cost minus depreciation, for special-use or unique structures.
Assessors choose the method that best reflects a property's market behaviour and use.

Penalties & Enforcement

Enforcement related to property assessment and tax collection in Markham involves municipal finance and by-law teams and may include notices, collection actions, and escalation to provincial tribunals for disputes. Specific monetary fines or penalties directly tied to valuation method misrepresentation are not routinely listed on the municipal assessment pages; amounts or daily fines are not specified on the cited pages.[1][2]

  • Monetary fines: not specified on the cited page.
  • Escalation: first, repeat, and continuing offence ranges are not specified on the cited page.
  • Non-monetary sanctions: collection notices, tax arrears registration, and court or tribunal actions may apply; specific orders or seizures are not specified on the cited page.
  • Enforcer: City of Markham Finance/Taxation for municipal collection; MPAC for assessment data; appeals heard at the Assessment Review Board (Tribunals Ontario). Official contacts are provided in Help and Support / Resources below.[1][3]
  • Appeals/reviews: administrative review with MPAC (Request for Reconsideration) and tribunal appeal routes via the Assessment Review Board; time limits and procedural deadlines should be checked on the official MPAC and ARB pages as they are not specified on the cited municipal assessment page.[2][3]
If you disagree with an assessed value, start with MPAC's review process before filing a tribunal appeal.

Applications & Forms

The common procedures include a Request for Reconsideration (RfR) submitted to MPAC and, if necessary, an appeal to the Assessment Review Board via Tribunals Ontario. Exact form names, numbers, fees, submission methods, and deadlines are published by MPAC and the Assessment Review Board; where form numbers or fees are not shown on municipal pages they are not specified on the cited page.[2][3]

  • Request for Reconsideration (MPAC): use MPAC guidance and forms for an initial review.
  • Assessment Review Board appeal: follow Tribunals Ontario filing instructions for hearings.

How to dispute an assessed value

Follow a sequence of review and appeal steps focusing on documentation, official forms, and deadlines. Keep records of communications and comparable evidence to support your position.

  1. Review your Property Assessment Notice and compare to recent sales for similar properties.
  2. Gather evidence: recent sale data, income/expense statements for rentals, and construction records.
  3. Submit a Request for Reconsideration (RfR) to MPAC using their official form and guidance.
  4. If MPAC’s response is unsatisfactory, file an appeal with the Assessment Review Board following Tribunals Ontario procedures.
  5. Attend hearings, comply with disclosure requests, and follow tribunal directions.

FAQ

What is the difference between assessed value and market value?
The assessed value is the value used for taxation based on provincial assessment processes; market value reflects what a buyer would pay in the open market. For provincial assessment rules see MPAC guidance.[2]
Who determines my property assessment in Markham?
Assessments are administered by the provincial assessment authority and applied to municipal tax calculations; the City of Markham administers tax billing and collection.[1]
How do I request a review of my assessment?
Begin with a Request for Reconsideration submitted to MPAC; if unresolved you can appeal to the Assessment Review Board at Tribunals Ontario.[2][3]
Are there fees to appeal my assessment?
Fees and filing requirements are set by MPAC and the Assessment Review Board; specific fee amounts are published on their official sites and are not specified on the cited municipal assessment page.[2][3]

How-To

  1. Check your Property Assessment Notice and note the valuation date and assessed value.
  2. Collect supporting documents: comparable sales, rental income records, or cost records.
  3. Complete and submit MPAC’s Request for Reconsideration form with evidence.
  4. Review MPAC’s decision; if dissatisfied, prepare and file an appeal with the Assessment Review Board.
  5. Attend any scheduled hearings and follow tribunal directions to resolve the dispute.

Key Takeaways

  • Assessments in Markham rely on provincial assessment frameworks implemented in municipal billing.
  • Start disputes with an MPAC Request for Reconsideration before escalating to the Assessment Review Board.

Help and Support / Resources

  1. [1] City of Markham - Property Taxes and Assessment
  2. [2] MPAC - Municipal Property Assessment Corporation
  3. [3] Tribunals Ontario - Assessment Review Board

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