What does home insurance NOT cover in Ontario?

A standard Ontario home insurance policy covers sudden, accidental events like fire, theft, and burst pipes, but it leaves out a long list of things. The big ones are overland flooding, sewer backup, earthquake, wear and tear, gradual damage, pest damage, and anything tied to poor maintenance. Many of these gaps can be added back, but only if you ask.

Why doesn't home insurance cover everything?

Home insurance is built to protect you against sudden and accidental losses, not against wear, neglect, or events that are almost certain to happen over time. That is the line insurers draw. A pipe that bursts without warning is usually covered. A pipe that has been slowly leaking behind a wall for months is usually not, because that is treated as a maintenance issue you were expected to catch.

Understanding this "sudden and accidental" principle explains most of the exclusions below. Insurers price a policy around unpredictable events. Things that are predictable, preventable, or guaranteed to wear out are seen as part of owning a home, not as an insurable risk. Some excluded events are also so large or so likely in certain areas that they need their own separate coverage, priced on its own.

The good news is that many common exclusions are not permanent. In Ontario, several of the most important gaps can be added back through optional endorsements. The catch is that they are usually not included by default, so you have to know to ask for them.

What water damage is excluded?

Water is the most misunderstood part of a home policy, because "water damage" is not one thing. A standard Ontario policy typically covers water that escapes suddenly from inside your home, like a burst pipe or an overflowing appliance. But two of the most common and costly water events are usually excluded unless you add coverage.

The first is sewer backup, which is water and sewage that backs up into your home through drains, toilets, or the sewer line during heavy rain or a blockage. This is one of the most frequent claims in Ontario, and it is almost always sold as a separate endorsement rather than being built in.

The second is overland flooding, which is water that enters your home from outside at ground level, such as a nearby river, lake, or heavy surface runoff after a storm. Overland water coverage is also optional and depends heavily on where your home sits. Some higher-risk properties may have limited options.

Then there is groundwater seepage and gradual water entry, such as water slowly working its way through a foundation. This is generally excluded and often cannot be added, because it points back to maintenance and grading rather than a sudden event. If water and basements matter to you, and in Ontario they usually should, it is worth confirming exactly which of these you have.

Does home insurance cover wear, maintenance, and gradual damage?

No, and this surprises a lot of homeowners. Anything that breaks down slowly over time is considered normal wear and tear, which is your responsibility as an owner. A roof that fails because it is thirty years old, a furnace that dies of old age, or flooring that wears out are all maintenance items, not insured losses.

Gradual damage falls in the same bucket. A slow leak, creeping rot, or moisture problems that develop over months are typically excluded because you were expected to notice and fix them. Insurers often draw a hard line between a sudden failure and a slow one, even when the end result looks similar.

Mould is closely tied to this. When mould grows out of a long-standing moisture or maintenance problem, it is usually not covered. When it results directly from a covered, sudden event, some coverage may apply, though often with limits. Pest and vermin damage, such as harm from rodents, insects, or raccoons, is generally excluded for the same reason, since it is viewed as something regular upkeep should prevent.

What situations and property are commonly excluded?

Beyond water and wear, several specific situations tend to fall outside a standard policy. Damage while a home is vacant or unoccupied for an extended period is a big one. Most policies restrict coverage once a home has been empty beyond a set number of days, and events like a freeze-up in an unheated, empty house may not be covered. If you are leaving a property empty, that is a conversation to have before you go, not after.

Earthquake coverage is almost always a separate, optional add-on. Intentional or illegal acts by someone insured are excluded, as is damage tied to certain unlawful activity in the home. Losses connected to running a business out of your home, including business equipment, inventory, or liability from clients visiting, are usually limited or excluded under a personal policy and often need a home-based business endorsement or a separate policy.

High-value belongings also carry internal limits. Jewellery, watches, furs, collectibles, cash, and similar items are typically capped at a set amount for theft. If you own pieces worth more than the sub-limit, they may need to be specifically listed and valued to be fully protected. Finally, very large-scale risks such as war and nuclear events are standard exclusions across the industry.

Which of these gaps can I add back?

Many of them, which is the part worth remembering. In Ontario, sewer backup, overland water, and often a broader enhanced water package are commonly available as endorsements. Earthquake coverage can usually be added. Higher limits or scheduled coverage can protect valuable jewellery and collectibles. Home-based business exposures can be addressed with the right endorsement or a companion policy.

What cannot easily be bought back is anything rooted in wear, neglect, or gradual damage, because those come down to maintenance rather than insurable risk. That is where keeping your roof, plumbing, and systems in good shape does more for you than any endorsement could.

The practical move is to read your policy's exclusions and limits, then match them to your actual home and belongings. A quick review with a broker can show you which gaps are worth closing for your situation and which are not, so you are not paying for coverage you do not need or missing coverage you do.

FAQ

Is flood covered by home insurance in Ontario? Not automatically. Overland flooding from rivers, lakes, or surface runoff, and sewer backup from drains, are usually sold as separate optional endorsements. Availability and limits depend on your location and risk, so confirm exactly what your policy includes rather than assuming.

Does home insurance cover a leaking roof or old furnace? Generally no. A roof or furnace that fails from age or wear is treated as maintenance, which is the homeowner's responsibility. Sudden, accidental damage, such as a storm tearing shingles off, may be covered, but ordinary breakdown from age is not.

Are my valuables fully covered for theft? Only up to the policy's internal limits for categories like jewellery, watches, and collectibles. If you own items worth more than those sub-limits, ask about scheduling them individually or adding higher limits so they are properly protected.

This is general information, not advice on a specific policy. Talk to a licensed broker about your situation.