When Should You Appeal a Court Decision in Ontario?

Losing a court case can be devastating, but it does not always mean the fight is over. If a judge made a legal error, misapplied the law, or reached a decision that is clearly unreasonable, you may have grounds to appeal. Understanding when an appeal is available — and when it is not — is the first step toward deciding how to move forward.

What Is an Appeal?

An appeal is not a new trial. It is a review of the original court's decision by a higher court. The appellate court examines whether the trial judge made errors in law, procedure, or in assessing the evidence. In Ontario, most appeals from the Superior Court of Justice go to the Ontario Court of Appeal, while appeals from the Ontario Court of Justice typically go to the Superior Court. Appeals from administrative tribunals — such as the Landlord and Tenant Board or the Human Rights Tribunal of Ontario — generally go to the Divisional Court.

Common Grounds for Appeal in Ontario

Not every unfavourable decision can be appealed. Appellate courts will only intervene where there is a reviewable error. The most common grounds include:

• Errors of law: The trial judge misinterpreted or misapplied a legal principle. This is the strongest ground for appeal because appellate courts review legal questions on a standard of correctness.

• Errors in fact-finding: The trial judge made a palpable and overriding error in assessing the evidence. This is a high bar — appellate courts give significant deference to trial judges on factual findings.

• Mixed errors of fact and law: The trial judge applied the wrong legal test to the facts, or drew legal conclusions from facts that cannot support them.

• Procedural unfairness: You were denied a fair hearing, denied the right to present evidence, or the judge showed bias.

• Unreasonable verdict: In criminal cases, the verdict is one that no properly instructed jury or judge could reasonably have reached.

Time Limits for Filing an Appeal

Time limits for appeals in Ontario are strict and cannot usually be extended without a court order. In most civil cases, you have 30 days from the date of the order to file a Notice of Appeal with the Court of Appeal. For criminal matters, the deadline is also typically 30 days from the date of sentence. Missing these deadlines can extinguish your right to appeal entirely, which is why it is critical to consult an appellate lawyer as soon as possible after an unfavourable decision.

What an Appellate Lawyer Does Differently

Appellate advocacy is a specialized skill that differs significantly from trial work. Trial lawyers focus on presenting evidence and examining witnesses. Appellate lawyers focus on legal argument and persuasive writing. The core of any appeal is the factum — a written argument that sets out the facts, identifies the errors in the decision below, and explains why the law requires a different result. A well-crafted factum is often the single most important factor in the outcome of an appeal.

When an Appeal May Not Be the Right Path

It is equally important to recognize when an appeal is unlikely to succeed. If the trial judge made no legal errors and the factual findings are reasonable, an appellate court will not substitute its own view of the evidence. Appeals are not an opportunity to re-argue the case. A candid assessment of the merits before committing to an appeal can save significant time, money, and emotional energy. The best appellate lawyers are the ones who tell you honestly whether your case has legs.