Is a burst pipe covered by home insurance in Ontario?

Usually, yes, since it's considered a sudden, accidental event. You'll typically pay your deductible, and the insurer covers the rest, subject to your policy limits and any specific exclusions.

Is basement flooding from a storm covered?

It depends on the source. Water that backs up through a sewer or drain is often covered if you have sewer backup coverage, which isn't always included by default. Overland flooding, water entering from ground level outside the home, usually needs a separate flood endorsement.

Will filing a water damage claim raise my premium?

It can, particularly if you've filed multiple claims in a short period. Some insurers offer claims-free discounts that a claim would interrupt. It's a reasonable thing to weigh for a smaller loss, but not a reason to skip a claim for genuine, significant damage.

What can get a water damage claim denied?

The most common reasons are damage tied to gradual leaks or long-term neglect rather than a sudden event, missing documentation, or a cause that falls under an exclusion in your specific policy, like overland flooding without the right endorsement.

Is water damage restoration covered by home insurance in Ontario?

By James Silva · Updated 2026-07-20

Water damage insurance in Ontario is one of the most misunderstood parts of a home policy, largely because coverage depends heavily on the cause of the water, not just the fact that your home got wet. This is general information, not insurance advice specific to your policy; always confirm details directly with your insurer.

The distinction that matters most: sudden vs. gradual

Most standard Ontario home insurance policies cover water damage from a sudden, accidental event, a burst pipe, a failed appliance hose, a supply line that lets go without warning. What they typically exclude is damage from a gradual leak or long-term moisture problem, the kind that built up slowly and could arguably have been caught with regular maintenance. Insurers look at this distinction closely, since it’s the most common point of dispute in a claim.

Coverage by water source

Source	Typically covered?
Burst pipe or supply line	Usually, yes
Appliance failure (washing machine, dishwasher)	Usually, yes
Sewer or drain backup	Only with sewer backup endorsement
Overland flooding (storm, snowmelt from outside)	Only with flood endorsement
Gradual leak or long-term moisture	Usually excluded

Sewer backup and overland flood coverage are two of the most commonly missing endorsements on Ontario policies, since they’re not always included by default. Given how often basement flooding in this region ties back to spring thaw or heavy storms, it’s worth confirming both are on your policy before you need them, not after.

What documentation your insurer will ask for

Photos and video of the damage before any cleanup starts are the single most useful thing you can provide. Beyond that, insurers typically want a rough timeline of when the water appeared and when you reported it, since a delayed report can raise questions about whether the damage worsened due to inaction. Keep every invoice and written scope from your restoration company, both for reimbursement and in case of any dispute over what was actually needed.

Working with a restoration company on a claim

Many restoration companies work directly with insurers and can bill the claim rather than requiring you to pay upfront and get reimbursed. That’s convenient, but it’s still worth getting your own copy of the full scope and invoice, since you’re the policyholder, not the restoration company. If you ever feel pressured to inflate a claim or add unrelated work to it, that’s worth pushing back on, since falsified claims create real liability for you as the policyholder, not just the contractor.

When to call your insurer versus your restoration company first

For anything beyond a minor, easily contained leak, call for restoration help first, since standing water causes more damage every hour it sits, and most companies will document the scene for your claim as part of the initial visit anyway. Report to your insurer as soon as it’s practical, ideally within the first day or two, since prompt reporting supports your claim rather than raising questions later.

Deductibles and how they shape the decision to claim

Your deductible is worth keeping in mind before you file, particularly for a smaller loss. If a repair is likely to cost close to or less than your deductible, filing a claim may not make financial sense, since you’d be paying out of pocket either way while potentially affecting your claims history. For anything clearly above your deductible, filing is usually the right call, and getting an estimate from a restoration company before deciding can help you judge which situation you’re in. Knowing the going rate helps here too; the water damage restoration cost guide lays out typical price ranges by job size.

Comparing coverage before you need it

If you’re not sure what your current policy actually covers, a quick call to your insurance broker to confirm sewer backup and overland flood status is worth doing before the next storm season, not during one. For finding a restoration company that’s experienced with insurance claims assistance specifically, our home page lists vetted local providers, and our ranking method explains how those listings are evaluated.

Insurance coverage for water damage isn’t complicated once you understand the sudden-versus-gradual distinction and know which endorsements you have. What trips people up is finding that out for the first time in the middle of a claim, rather than before one.

FAQ

Is a burst pipe covered by home insurance in Ontario?: Usually, yes, since it's considered a sudden, accidental event. You'll typically pay your deductible, and the insurer covers the rest, subject to your policy limits and any specific exclusions.
Is basement flooding from a storm covered?: It depends on the source. Water that backs up through a sewer or drain is often covered if you have sewer backup coverage, which isn't always included by default. Overland flooding, water entering from ground level outside the home, usually needs a separate flood endorsement.
Will filing a water damage claim raise my premium?: It can, particularly if you've filed multiple claims in a short period. Some insurers offer claims-free discounts that a claim would interrupt. It's a reasonable thing to weigh for a smaller loss, but not a reason to skip a claim for genuine, significant damage.
What can get a water damage claim denied?: The most common reasons are damage tied to gradual leaks or long-term neglect rather than a sudden event, missing documentation, or a cause that falls under an exclusion in your specific policy, like overland flooding without the right endorsement.