Property Assessment Appeal - London Bylaw Guide

Taxation and Finance Ontario 3 Minutes Read · published February 12, 2026 Flag of Ontario

In London, Ontario, property owners who disagree with their assessed value should first review their assessment notice and available municipal guidance. The municipal website explains taxes and assessments and directs owners to the Municipal Property Assessment Corporation (MPAC) and the provincial assessment tribunal for formal reviews and appeals. City of London: Property taxes & assessments[1] For a formal reconsideration of an assessment contact MPAC or file a tribunal appeal if reconsideration does not resolve the issue. MPAC[2]

Overview of the appeal process

Disputes normally follow two stages: (1) Request Reconsideration (RR) with MPAC to review facts and data; (2) if unresolved, file a formal appeal with the provincial tribunal that hears assessment matters. The tribunal regionally administers hearings, evidence exchange and decisions. Assessment Review Board / Tribunals Ontario[3]

Start with MPAC's Request Reconsideration before filing a tribunal appeal.

Penalties & Enforcement

Appealing an assessment is separate from municipal tax collection. The official pages consulted do not list monetary fines tied specifically to filing or pursuing an assessment appeal; penalties for unpaid property taxes are managed by the City of London and may be described on its tax pages.

  • Fines or monetary penalties for assessment appeals: not specified on the cited page.
  • Escalation for repeat offences or continuing noncompliance: not specified on the cited pages.
  • Non-monetary sanctions: tribunal orders can confirm assessed value; municipal actions for unpaid taxes (interest, collections) are handled by the City of London.
  • Enforcer and contact: MPAC administers assessments and requests for reconsideration; the provincial tribunal (Tribunals Ontario / Assessment Review Board) hears appeals; the City enforces tax collection.
  • Appeals/review routes and time limits: specific statutory deadlines or time limits are not specified on the cited pages; check MPAC and the tribunal pages for current filing deadlines and windows.
  • Defences/discretion: common defences include factual errors in property data, comparable property evidence, or eligible exemptions; tribunal panels exercise discretion based on evidence.
Check MPAC and the tribunal site for exact filing deadlines before taking action.

Applications & Forms

  • Request Reconsideration (MPAC): MPAC's RR process is the first formal review step; specific form name or number not specified on the cited page.
  • Tribunal appeal filing: appeals are filed with the provincial tribunal that handles assessment disputes; the exact form number or filing fee is not specified on the cited page.
  • Fees: filing or hearing fees, if any, are not specified on the cited pages.
If you cannot find an MPAC form online, contact MPAC by phone for guidance on submitting a Request Reconsideration.

Action steps - what to do now

  • Gather documentation: recent appraisals, sales of comparable properties, photos, building permits and error evidence.
  • Contact MPAC to request a reconsideration and confirm the RR process and any submission deadlines.
  • If RR does not resolve the dispute, prepare to file an appeal with the tribunal, including required evidence and witness statements.
  • Pay attention to municipal tax payment deadlines to avoid collection penalties while your appeal proceeds.

FAQ

How do I start an appeal of my property assessment?
Begin with a Request Reconsideration through MPAC; if unresolved, file a formal appeal with the provincial assessment tribunal.
Will an appeal delay my tax bill?
Filing an appeal does not automatically stop tax collection; check the City of London tax rules and payment options to avoid interest or collection action.
How long does the appeal take?
Timelines vary by case and tribunal schedule; the cited pages do not specify a standard duration.

How-To

  1. Review your assessment notice and compare the property data for errors.
  2. Gather supporting evidence: comparables, permits, photographs and valuations.
  3. Submit a Request Reconsideration to MPAC and document the submission.
  4. If unsatisfied, file a tribunal appeal, follow evidence exchange rules, and attend the hearing.
  5. Receive the tribunal decision and, if successful, confirm municipal tax adjustments with the City.

Key Takeaways

  • Start with MPAC's Request Reconsideration before escalating to a tribunal appeal.
  • Keep clear records and comparable evidence to support your case.

Help and Support / Resources

  1. [1] City of London - Property taxes & assessments
  2. [2] Municipal Property Assessment Corporation (MPAC)
  3. [3] Tribunals Ontario - Assessment Review Board

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