- Ontario's Small Claims Court handles claims up to $50,000, which covers most residential renovation and repair disputes.
- Common contractor claims include defective work, incomplete or abandoned jobs, overcharging, and deposits taken for work never done.
- Your damages are usually the cost to fix or complete the work properly — which means getting quotes from other contractors.
- Strong evidence wins these cases: the contract, photos, texts, invoices, payment records, and sometimes an expert opinion.
- You must sue the correct legal entity — the company, or the individual if they are a sole proprietor — or you may win a judgment you cannot collect.
- A demand letter first is often worth it, and most claims resolve at the mandatory settlement conference rather than trial.
The Short Answer
You can sue a contractor in Ontario Small Claims Court for up to $50,000 when they do defective work, fail to finish the job, abandon it, or take a deposit for work never performed. The keys to winning are proving your damages — usually the cost to fix or complete the work, backed by quotes from other contractors — assembling strong evidence, and suing the correct legal entity so any judgment can actually be collected.
When You Can Sue a Contractor
Contractor disputes are among the most common claims in Small Claims Court. Typical grounds include:
- Defective or substandard work that does not meet a reasonable standard or the agreed specifications
- Incomplete or abandoned work — the contractor stopped partway through
- A deposit taken for work never started or performed
- Overcharging beyond the agreed price without justification
- Damage caused to your property during the work
At its core, a contractor claim is a breach of contract case — the contractor agreed to do something for a price and did not deliver what was promised. Our overview of contractor disputes covers the common scenarios in more detail.
The $50,000 Limit
Ontario's Small Claims Court hears claims up to $50,000, excluding interest and costs. That ceiling covers the majority of residential renovation and repair disputes. If your damages are somewhat above $50,000, you can either pursue the full amount in the Superior Court of Justice (a more complex and expensive process) or choose to cap your claim at $50,000 to keep it in the faster, more accessible Small Claims Court.
It helps to total your likely damages before deciding where to sue. Our Small Claims calculator can help you estimate your claim, including interest, so you know whether you are comfortably within the limit.
Proving Your Damages
Winning a contractor case is not just about showing the work was bad — it is about proving, in dollars, what you are owed. In most cases, your damages are the reasonable cost to repair the defective work or complete the unfinished work. That is why the single most important piece of evidence is often a quote (or two) from another qualified contractor setting out what it will cost to put things right.
Obtain written quotes from reputable contractors to fix or finish the job. These translate a vague complaint about “bad work” into a concrete, provable dollar figure — which is exactly what the court needs to award damages.
The Evidence You Need
Contractor cases are won on documentation. Assemble as much of the following as you can:
| Evidence | Why It Matters |
|---|---|
| The contract or written quote | Establishes what was agreed — scope, price, and timeline |
| Payment records | Proves what you paid and when (receipts, e-transfers, cheques) |
| Photos and video | Shows the defective or incomplete work clearly |
| Texts and emails | Documents promises, admissions, and the breakdown |
| Repair quotes | Quantifies your damages in dollars |
| Expert opinion | Supports technical claims about workmanship or standards |
Our guide on evidence in Small Claims Court explains how to organize and present it effectively.
Suing the Right Entity
This is where people most often trip up. You must sue the legal entity you contracted with. If the contractor operates through a corporation, you generally sue the corporation. If they are a sole proprietor, you sue the individual, along with any registered business name. Getting this wrong can leave you with a judgment against an entity that has no assets — a win on paper you cannot collect.
A business name on a truck or invoice is not necessarily who you sue. Check whether the contractor is incorporated (and get the exact corporate name) or operating as an individual. Suing the wrong party is a common and costly mistake.
Start With a Demand Letter
Before filing, a clear demand letter is usually worth sending. It sets out the problem, the amount you want, and a deadline to respond, and it sometimes prompts a settlement without litigation. It also shows the court you acted reasonably, which can matter when costs are considered. Our guide on demand letters before suing explains how to write an effective one.
The Step-by-Step Process
Give the contractor a final chance to fix the problem or pay, with a clear deadline.
Complete and file the Plaintiff's Claim with the Small Claims Court, naming the correct entity and setting out the facts and the amount you are claiming.
Serve the claim on the defendant according to the court's rules so the case can proceed.
This mandatory step brings both sides before a judge to explore settlement. Many contractor claims resolve here.
If no settlement is reached, present your evidence and witnesses at trial for a decision.
Defences a Contractor May Raise
Expect the contractor to push back. Common defences include:
- The work met a reasonable standard and your expectations were unrealistic
- You changed the scope or interfered with the work
- You failed to pay, justifying stopping the job
- The problems were caused by something other than their work
- You did not give them a chance to fix the issues
Anticipating these — and having documentation that answers them — is a big part of how to win in Small Claims Court.
Collecting Your Judgment
Winning is only half the battle — you then have to collect. A judgment does not pay itself, and if the contractor has no assets or has folded the corporation, enforcement can be difficult. This is another reason suing the right entity matters. Our guide on collecting a judgment in Ontario explains the enforcement tools available.
Before you invest time and filing fees, it is worth a realistic look at whether the contractor can actually pay. A contractor who is established, insured, and running a solvent business is a far better collection prospect than one who works cash-in-hand and dissolves companies. Enforcement tools such as garnishing wages or a bank account, or filing a writ against property, only help if there is income or an asset to reach. None of this should discourage a legitimate claim — but factoring collectability in from the outset keeps expectations grounded and helps you name the strongest possible defendant.
What It Costs to Sue
The cost of a contractor claim comes in a few layers, and it is worth budgeting for them before you file. There are court filing fees to issue a Plaintiff's Claim, and further fees at later stages such as requesting a trial or taking enforcement steps. These fees differ depending on whether you are an occasional or frequent claimant. On top of that, you may incur costs for obtaining repair quotes and, where needed, an expert opinion.
The good news is that a successful party can usually recover some of their costs, including the court fees and a limited allowance toward representation, though Small Claims Court generally caps the costs it will award. The economics matter: for a modest dispute, the fees and effort should be weighed against the amount at stake and the realistic prospect of collecting. For a larger renovation claim well within the $50,000 limit, the process is usually well worth pursuing. Estimating your total claim — including interest — with our Small Claims calculator helps you make that call before committing.
Common Mistakes
- Suing the wrong entity, or a business name that is not a legal person
- Failing to get repair quotes to quantify damages
- Not documenting the defects with photos before repairs are done
- Waiting too long and risking the limitation period
- Refusing the contractor any opportunity to remedy the work
Common Myths
Myth: “If the work looks bad, I automatically win.”
False. You must prove both the breach and your damages in dollars — usually with repair quotes and evidence, not just complaints.
Myth: “I can sue the guy personally no matter what.”
False. If you contracted with a corporation, you generally sue the corporation, not the individual. The correct defendant depends on how the contractor operates.
Myth: “A judgment means I get paid.”
False. A judgment is a right to be paid; you may still need to enforce it, which is easier against a solvent, correctly named defendant.
Dealing with a bad contractor or an unfinished renovation? Call our Toronto Small Claims team at 416-274-2222 for a free, confidential consultation.
Frequently Asked Questions
Yes, if your claim is for $50,000 or less, Small Claims Court is the usual venue for contractor disputes such as defective work, incomplete jobs, or a deposit taken for work never performed. Larger claims may need to proceed in the Superior Court of Justice.
Small Claims Court in Ontario handles claims up to $50,000, not counting interest and costs. If your damages exceed that, you can either pursue the larger amount in a higher court or choose to limit your claim to $50,000 to stay in Small Claims Court.
Typically, the cost to repair or complete the work properly, the return of a deposit for work never done, and related losses that flow from the breach. The goal is to put you in the position you would have been in had the work been done correctly, so quotes to fix or finish the job are central.
The contract or quote, proof of payments, photographs of the defective or incomplete work, text and email communications, and quotes from other contractors to fix or finish the job. In more technical cases, a written opinion from a qualified tradesperson or engineer can be persuasive.
Not always. For clear-cut issues, photos and repair quotes may be enough. For disputes about workmanship or building standards, an opinion from a qualified professional can significantly strengthen your case, though it adds cost. Whether it is worth it depends on what is in dispute.
You sue the legal entity you contracted with. If the contractor operates through a corporation, you generally sue the corporation; if they are a sole proprietor, you sue the individual (and any registered business name). Suing the wrong entity can leave you with a judgment you cannot enforce.
Usually yes. A clear demand letter sets out the problem, what you want, and a deadline, and it sometimes resolves the matter without a claim. It also demonstrates to the court that you acted reasonably, which can matter for costs.
Ontario generally has a two-year limitation period, running from when you knew or ought to have known about the claim. For construction defects that are not immediately obvious, when the clock starts can be a live issue, so it is wise to act promptly and get advice if timing is tight.
That can be relevant to your claim and to consumer protection issues, but it does not by itself guarantee success — you still need to prove the breach and your damages. It can, however, affect the overall picture and the contractor's credibility.
You can represent yourself in Small Claims Court, and many people do. That said, a paralegal or lawyer can help you frame the claim correctly, assemble the right evidence, sue the correct entity, and present the damages persuasively — which can make a real difference in the outcome.