Flooded Neighbourhoods Cut Nearby Home Values 8.2% Even When Your House Stays Dry

The Statistics Canada study released September 3 is the most current national picture of residential flood exposure, and its numbers are large. In 2022, 39.5 per cent of residential properties in Manitoba's census metropolitan areas and census agglomerations were in high flood hazard areas, ahead of British Columbia at 7.1 per cent and Yukon at 5.1 per cent.

Winnipeg carries almost all of Manitoba's total. A total of 112,085 residential properties in the Winnipeg census metropolitan area were in high flood hazard areas, representing 45.1 per cent of its residential property stock — the highest share of any census metropolitan area or agglomeration studied, and 98.7 per cent of the provincial figure.

Smaller communities showed high shares too. Chatham-Kent had Ontario's largest share at 35.9 per cent, covering 13,860 properties. In the Chilliwack census metropolitan area, 6,310 properties, or 17.8 per cent of the stock, were in high flood hazard areas, and investment properties made up a notably higher share of the stock inside those areas, at 24.6 per cent against 18.9 per cent outside them.

Two further limits belong with the data. The study covers the 2022 reference year, and its source database holds no information on residential properties in Quebec or on reserves, so a Montreal or Quebec City reader is not represented in any figure above. Within that scope, the study also cites a 2022 Public Safety Canada estimate that flooding costs Canadian residential properties an average of $2.9 billion a year.

The infrastructure and policy side of this problem is developing quickly, as our coverage of federal flood-loss projections sets out.

Value is one channel. Insurance is the other, and it is the one a homeowner feels sooner. About 850,000 Canadian homes — roughly six per cent of the stock — cannot obtain overland flood coverage at all, a figure Feltmate cited this month and one the Insurance Bureau of Canada confirmed in a July 2026 market report.

The direction of travel, though, is better than the headline suggests. That same report found roughly 94 per cent of Canadian residential properties are now eligible for overland flood insurance, and that the number of homes unable to access it has fallen nearly 45 per cent in seven years, from about 1.5 million to roughly 850,000. Canada's flood problem is shifting from an access problem to a risk-reduction problem.

Premiums are where the pressure shows up for everyone else. Home insurance premiums rose 6.2 per cent year over year in 2026 according to a Rates.ca analysis reported by The Canadian Press, which put the average annual Ontario premium at $2,235. Over a longer window the climb is steeper: home and mortgage insurance premiums rose 45 per cent nationally between December 2019 and December 2025, more than double overall inflation. Insured losses from extreme weather have averaged more than $3.7 billion a year over the past decade, against $1.4 billion in the decade before.

You do not need to file a claim to participate in that. Pricing follows the risk profile of an area, which is precisely the sense in which a neighbourhood's flood record becomes your household expense.

Provincial variation in this market is significant, and we covered it in detail in our report on uninsurable homes and Alberta premium increases.

Here is the part of the research that costs nothing to act on. The Intact Centre's survey work found that 53 per cent of homeowners do not maintain their backwater valve from one year to the next, and that in a survey of homes across New Brunswick, Quebec, Ontario and Saskatchewan, 70 per cent had landscape grading sloping toward the house rather than away from it. Feltmate's argument, made to Insurance Portal this month, is that homeowners are where the most risk can be removed almost instantly, for very little money or technical expertise. The obstacle is not cost or willingness. It is that most people have never been told what to look at.

The grading and downspout standards come from the Intact Centre's home flood protection guidance, which puts both at a minimum of two metres from the foundation and notes that one in three Canadian homeowners will experience basement flooding. The backwater valve intervals come from the federal government, which advises inspecting the valve at least once a year in the spring and cleaning it at least twice a year to remove dirt and grease, and warns that valves can fail if the cleanout cap is not secure. If your home was built in the last twenty to thirty years you may already have one, because many municipalities require them in new construction.

The insurance checks are the ones people skip because they assume the answer. Coverage for flooding is not typically included in a standard Canadian home or tenant policy. Overland flooding, sewer backup, sump pump failure and storm surge are sold as separate endorsements, availability varies by insurer, and it depends on the flood risk assessed for your specific property. Knowing which of those four you actually hold — and what each one is limited to — is a fifteen-minute phone call that most owners have never made.

Why so few act on any of this, despite rising claims, is the subject of our report on Allstate Canada's external flooding claims data.

Two numbers should stay with you, and they pull in different directions. The first is 8.2 per cent: a real, Canadian, control-group-verified measurement of what happened to sale prices in five communities after catastrophic floods, reaching homes that never took on water. The second is the six-month window it was measured over. This is a demonstrated market reaction, not a permanent write-down, and the evidence base is five cities rather than the whole country.

What sits between those two numbers is the part you control. A neighbourhood's flood record is not something an individual homeowner can change. The grade around your foundation, the state of your backwater valve, and whether your policy carries the endorsement that would actually respond are all things you can settle before the next system arrives. On the evidence, that is where the return is.