- CAT was established under Ontario’s Condominium Act, 1998 as a specialized tribunal for resolving certain categories of condo-related disputes without requiring a full court proceeding.
- CAT’s jurisdiction has expanded since it was first created, so treat this table as a general guide rather than an exhaustive or permanently fixed list — always confirm current…
- CAT proceedings are typically structured in stages, moving from informal resolution toward a binding decision only if needed: 1.
Not every disagreement with a condo corporation — or a neighbour — needs a courtroom. Ontario created a dedicated, online tribunal specifically for certain condo disputes, designed to be faster and less formal than going to court.
The Condominium Authority Tribunal, usually shortened to CAT, is part of the Condominium Authority of Ontario. It hears a defined — and growing — set of dispute types, entirely online. Understanding what falls inside its jurisdiction, and what still has to go elsewhere, can save you time and legal fees if a dispute comes up in your building.
What CAT Is
CAT was established under Ontario’s Condominium Act, 1998 as a specialized tribunal for resolving certain categories of condo-related disputes without requiring a full court proceeding. It operates as an online tribunal, meaning most or all of the process — filing, evidence exchange, and hearings — happens through a digital platform rather than in person.
Disputes CAT Can and Can’t Hear
| Dispute Type | Generally Within CAT’s Jurisdiction? |
|---|---|
| Access to condo corporation records | Yes |
| Nuisance-type disputes (noise, odour, smoke, vibration, light) | Yes, in many cases |
| Pet-related rule disputes | Yes, in many cases |
| Parking and vehicle-related disputes | Yes, in many cases |
| Fee or common-expense disputes | Generally no — often handled elsewhere |
| Governance disputes over board decisions generally | Generally no — outside CAT’s specific mandate |
| Construction deficiency or builder disputes | Generally no |
| Personal injury or property damage claims | Generally no |
CAT’s jurisdiction has expanded since it was first created, so treat this table as a general guide rather than an exhaustive or permanently fixed list — always confirm current jurisdiction before assuming a dispute belongs there.
How the CAT Process Generally Works
CAT proceedings are typically structured in stages, moving from informal resolution toward a binding decision only if needed:
- Negotiation. The parties are prompted to try to resolve the issue directly online, before anything more formal happens.
- Mediation. If direct negotiation doesn’t resolve it, a CAT mediator helps the parties work toward a resolution.
- Tribunal decision (adjudication). If mediation fails, the dispute proceeds to a formal decision by a CAT adjudicator, whose decision is binding.
This staged structure means many disputes resolve before ever reaching a formal hearing — part of the point of having a dedicated, streamlined process for these dispute types.
What CAT Can Order
Where a dispute proceeds to a decision, CAT can generally issue orders tailored to the type of dispute — for example, directing a corporation to produce records it wrongly withheld, or addressing an ongoing nuisance issue. Specific remedies, including any cost awards or penalties, depend on the dispute type and current rules, and are worth confirming with a lawyer rather than assuming a particular outcome.
When You Still Need to Go Elsewhere
Plenty of condo-related disputes still fall outside CAT and need to go through the regular courts, or be addressed through the corporation’s own governance processes. This includes most construction and builder disputes, many fee and financial disputes, and broader governance disagreements about how a board is exercising its judgment. A lawyer can help you sort out which track applies before you spend time filing in the wrong place.
Frequently asked questions
Do I need a lawyer to use CAT?
No — CAT is designed to be accessible without a lawyer, and many people represent themselves through the online process. That said, for disputes with real stakes, legal advice before you file, or respond, can still be valuable.
How much does it cost to file with CAT?
CAT filing fees exist but vary by dispute stage and type, and figures can change — confirm the current fee schedule directly with the Condominium Authority of Ontario before filing rather than relying on a remembered number.
Can I go to CAT and also sue in court over the same issue?
Generally, if a dispute falls within CAT’s specific jurisdiction, you’re expected to use that process rather than pursue the same issue separately in court — but overlapping issues can get complicated, which is exactly the kind of situation worth a lawyer’s input before you choose a path.
What if my dispute involves both a CAT-eligible issue and something CAT doesn’t cover?
This comes up often — for example, a nuisance dispute tangled up with a broader governance disagreement. A lawyer can help you figure out which parts belong at CAT and which need a different venue.
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Start a file online — flat, published fees, reviewed by a licensed Ontario lawyer before a dollar is owed.