Treadstone Associates
Article · 7 min read

Incident and Liability Reporting in Buildings

A slip in a lobby and a flood from a unit above it feel like the same category of problem — something went wrong, someone has to pay — but they run through two entirely different legal channels, and neither one goes through the Condominium Authority Tribunal, which is the venue managers reach for out of habit and which explicitly does not hear either kind of claim.

Treadstone Associates · Updated 2026

Key takeaways

Two questions determine how an incident actually gets resolved, and neither of them is "was this a condo issue." The first is whether the loss is a bodily injury or illness, or property damage. The second is who had actual control over the condition that caused it. Getting the first question right rules the CAT out immediately; getting the second one right determines which insurance policy, and whose, actually responds.

Why the Condominium Authority Tribunal is the wrong venue

It is a common assumption that condo disputes generally end up at the CAT, and for pets, parking, records and certain nuisances, that is correct. But the CAO's own jurisdiction page is explicit about what falls outside its jurisdiction: "matters that are likely to cause damage to property or cause injury or illness to a person," alongside governance, budget and repair disputes generally. A manager who tries to route a slip-and-fall or a flood claim toward the CAT is not just picking a slower venue — it is the wrong venue outright, and the claim needs to be reframed around occupiers' liability and insurance from the start, not filed and then redirected after the fact.

Control, not ownership, decides who is liable

Ontario's Occupiers' Liability Act establishes the actual test for a bodily-injury or illness claim: an occupier is "whoever has control over a property — which is not necessarily the legal owner, but could be a tenant, property manager, or contractor in charge of the space," and the duty is to "take reasonable care" that visitors and their property are "reasonably safe," not to guarantee absolute safety. Treadstone Law's guidance on multiple occupiers goes further: multiple parties can each be an occupier of "different parts, or different aspects, of the very same premises, depending on their specific roles," and "each occupier's duty is then assessed based on the degree of control they actually had over the specific condition that caused the injury." A corporation that has delegated common-element maintenance to a manager, and grounds care to a separate contractor, may find liability for a single incident split three ways rather than resting entirely on the corporation.

What actually needs to be documented, and how fast

Treadstone Law's guidance on icy-parking-lot liability is specific about what protects a corporation after an incident: "getting the relevant details, photographs, and documentation as soon as possible after a fall matters considerably to how a claim like this can later be pursued," and "a reasonable system for monitoring and treating hazardous conditions given the weather" is the actual standard, not perfect conditions. In practice that means an incident report filled out the same day, with photographs of the condition as found, the maintenance log for the area covering the days before the incident, and the name of whoever last inspected or serviced that specific location. A report written a week later, from memory, after the hazard has already been fixed, is materially weaker evidence than one written within hours — and "the maintenance contracts and service logs" that establish who was actually responsible "are usually inaccessible without legal assistance" once a claim is already underway, which is exactly why they need to already be organized before that point.

Worked example: a leak that is two claims, not one

Water from a third-floor unit's failed supply line runs into the hallway below and floods a storage locker, damaging a neighbouring owner's property; the same water leaves a slick patch on the hallway floor that a resident slips on an hour later, before cleanup crews arrive. These are two separate legal tracks. The property damage to the storage locker runs through the chargeback mechanism: if the source unit's owner failed to maintain the supply line, the corporation can charge back the repair cost or its insurance deductible, whichever is less, under ss. 92, 98, 105(2) and 57(4) of the Condominium Act. The slip-and-fall is a separate occupiers' liability claim entirely, turning on who had control over hallway maintenance and response time at the moment of the fall — the corporation, the management company, or a contracted cleaning service, depending on how that responsibility was actually assigned. Treating both events as "the leak claim" and filing one incident report risks losing the documentation each track separately needs.

Who actually needs to be told, and in what order

A reporting workflow that only escalates to the board misses two parties who need to hear about a significant incident faster than a board meeting allows: the corporation's insurer, and, where a claim is plausible, legal counsel. Most commercial property policies carry a notice-of-loss clause with its own deadline, separate from anything in the Condominium Act, and a late notice can jeopardize coverage regardless of how strong the underlying facts are. A practical order is: immediate first aid or hazard containment, same-day documentation while the scene and witnesses are fresh, notice to the insurer within whatever window the policy specifies, and only then a board update summarizing what happened and what has already been done — rather than waiting for a board meeting to trigger the insurer notice, which is the sequence most likely to blow through a policy deadline unnoticed.

The corporation's own insurance deductible is a separate exposure to track

Even where the corporation is not ultimately found liable, or is only partially liable alongside a contractor, a claim against the corporation's own policy still exposes it to its deductible — a cost that shows up on the corporation's books as a common expense whether or not any individual owner is chargeable for it. Tracking incident-driven deductible hits separately from routine maintenance spending gives a board a clearer signal for whether a recurring hazard — the same icy entrance, the same slow leak location — is costing more in repeated deductibles than a permanent fix would cost outright.

The same control-based logic runs through snow and grounds contract management and parking and storage administration — wherever a hazard could plausibly originate from weather, equipment, or a third-party contractor's own work, the first question is still who had control over that specific condition when it caused the loss. The property-damage side of a claim connects directly to insurance deductible chargebacks and how that cap is actually calculated.

FAQ

Does the Condominium Authority Tribunal hear injury or property-damage claims?

No. The CAT's jurisdiction explicitly excludes matters likely to cause property damage or personal injury or illness. Those claims run through occupiers' liability and insurance, not the CAT.

Who is liable for an injury in a common-element hallway?

Whoever had actual control over the specific condition that caused it — which may be the corporation, the property manager, or a maintenance contractor, and can be split between more than one of them depending on their roles.

Is a property-damage chargeback the same thing as a liability claim?

No. A chargeback recovers repair costs or the insurance deductible from an owner whose unit caused damage, capped at whichever is less. A bodily-injury claim from a third party is a separate occupiers' liability matter with its own insurance line.

What should be documented immediately after an incident?

Photographs of the condition as found, a same-day written report, the maintenance log for that location covering the preceding days, and the name of whoever last serviced or inspected it. Evidence gathered promptly is materially stronger than a report reconstructed later.

Can one incident produce two separate claims?

Yes. A leak that damages property and also causes a slip-and-fall generates a property-damage chargeback track and a separate occupiers' liability track, each needing its own documentation.

See where AI pays off first in your business.

A 30-minute call is enough to tell you whether AI pays for itself here.