Condo and Strata Liability: Who Pays When Water Comes From Your Unit

Water damage that starts in your unit and spreads to the units below is not just your problem — it's the corporation's problem, and the corporation has a statutory tool for making it your problem again. In Ontario, section 105 of the Condominium Act, 1998 lets the corporation add its own insurance deductible to your unit's account. In BC, section 158 of the Strata Property Act lets the strata corporation sue you to recover it. Owners routinely believe this can't happen. It's routine.

Here's the mechanism, the real numbers as reported, and where an owner's own coverage picks up the difference.

The scenario#

A washing machine hose lets go on a Tuesday while you're at work. By the time anyone notices, water has travelled down through two floors below yours, soaking flooring, drywall, and a neighbour's hardwood. The corporation's master insurance policy pays for the building repairs — that part works exactly the way owners expect.

Then a letter arrives: the corporation is charging back its insurance deductible to your unit, because the water originated there. Depending on the building and the province, that number can run from a few thousand dollars to well over a hundred thousand.

How the chargeback actually works#

The corporation's master policy is not your policy, and its deductible is not automatically your deductible — until the corporation's bylaws make it exactly that. Two provinces, two different statutory routes to the same destination.

Ontario: "condo," "condo corporation," "status certificate"#

Can an Ontario condo corporation charge back its deductible to you? Yes. Section 105 of the Condominium Act, 1998 allows a corporation to add the cost of repairing the unit where the damage originated — capped at the lesser of the actual repair cost or the corporation's insurance deductible — to that unit's account as a common expense. Unpaid, it becomes collectible the same way unpaid condo fees are: by lien against the unit.

The base statutory rule only reaches the origin unit itself — not the units below it, and not common elements. In practice, that limitation rarely survives contact with a corporation's actual governing documents: many Ontario corporations have adopted a deductible by-law, permitted under the Act, that extends the chargeback to cover repairs in other affected units and common elements too, up to the full deductible amount. Whether your corporation has adopted one of these by-laws is the single most important fact in this entire scenario, and it's answered by one document.

That document is the status certificate — the disclosure package a corporation must provide within 10 days of a request, at a fee commonly capped around $100. It bundles the declaration, by-laws, budget, and insurance information. If you're buying into a building, read the deductible by-law before you close. If you already own, request it (or the bylaws directly from your property manager) rather than guessing.

British Columbia and Alberta: "strata," "strata council," "special assessment"#

Can a BC strata charge back its deductible to an owner? Yes. Section 158 of the Strata Property Act lets the strata corporation sue an owner to recover the deductible portion of an insurance claim where the owner is responsible for the loss. The word "responsible" is doing real work here: depending on how the strata's own bylaws are written, responsibility can mean the loss simply originated in your strata lot — no carelessness required — or it can require the strata to actually prove negligence. Read your strata's specific bylaw on deductible recovery; don't assume the Act's default applies unmodified.

Where this gets genuinely large is the number itself. BC strata water-damage deductibles are widely reported by insurance brokers and industry publications in the $100,000 to $250,000 range, and some older Metro Vancouver towers with claims history are reported carrying deductibles of $500,000 or more. A single overflowing toilet, charged back in full, is a number most households have never budgeted for. Alberta condo corporations operate under a similar condominium-property framework and can pursue comparable chargebacks — confirm the specifics with your own corporation, since Alberta's numbers are less widely reported than BC's.

If a special assessment gets levied because a large deductible payment wiped out the contingency reserve, that's a related but separate event from an individual chargeback — an assessment spreads a cost across every owner, while a chargeback targets the unit of origin specifically.

What if my tenant caused the damage, not me?#

You're still the one the corporation charges back. Both the Ontario and BC/AB mechanisms run against the unit, not against whichever human happened to be negligent — the corporation's relationship is with the owner, not with the owner's tenant. If you rent out your unit and your tenant's washing machine is the one that fails, the chargeback still lands on your account, and recovering any of it from your tenant afterward is a separate, harder conversation that depends on your lease and your tenant's own coverage, if they have any.

This is exactly the situation tenant insurance and a landlord's own rental property coverage are built to sit behind.

What if the damage happened to my unit, not from it?#

Flip the scenario and the mechanics change. If water originates in the unit above you and damages your flooring and drywall, the corporation's master policy generally pays for the repair, and its insurer can pursue the unit where the water actually originated through subrogation — recovering what it paid from the responsible owner's chargeback exposure, exactly as described above, just pointed the other way.

As the damaged owner, you're not the one facing a chargeback in this version, but you're not automatically made whole either: your own deductible, any upgrades beyond the standard unit, and your own inconvenience are typically yours to absorb unless your own unit-owner policy responds first. Practically, this means every owner in a building — upstairs and downstream — benefits from knowing where the corporation's deductible sits and what their own policy does or doesn't cover.

Which policy actually responds — and where it stops#

Three coverages can be involved, and confusing them is the whole problem:

Whether an umbrella policy extends over a chargeback specifically is a real, honest question, and the answer is: ask your broker to confirm it in writing. Chargebacks sit in an unusual spot — part contractual assessment, part liability-flavoured recovery — and policy wordings differ on how they treat it. A page like this shouldn't promise a blanket yes.

How umbrella coverage changes the outcome#

Where a personal umbrella or excess policy does clearly help: if the corporation's insurer, having paid for the building repairs, turns around and pursues you directly as a subrogated claim rather than (or in addition to) a bylaw chargeback, that's an ordinary liability claim, and your home or condo policy's liability section — with an umbrella above it — is exactly the coverage built to respond. A $1 million umbrella typically costs $200–$300 a year for the first million and roughly $50–$75 per additional million (estimates from typical Canadian broker pricing, not quotes) — inexpensive insurance against a deductible that, in some BC buildings, runs into six figures on its own.

The comparison worth making before anything leaks#

Confirm three numbers this month, not after a claim: your corporation's actual insurance deductible (from the insurance certificate, not a rumour in the building group chat), your own policy's loss-assessment or by-law-coverage limit, and your personal liability limit. If the first number is bigger than the second, you have a real, quantified gap — and it's one an insurance conversation closes far faster than a dispute with your corporation's board ever will.