IBC Demands Federal Action as Flood Losses Triple and 500,000 New Homes Face Risk

For most Canadian homeowners, the flood story has been a price story. Premiums climb, deductibles widen, and high-risk endorsements become harder to obtain. That narrative is real, but it is not what IBC stepped forward to argue on May 21.

The bureau's framing is structural. According to the Insurance Bureau of Canada via Canadian Mortgage Professional, insured flood and water-related losses have risen more than 350% over the past two decades compared with the prior twenty years, drawing on tracking by CatIQ. The bureau is not asking insurers to absorb more of that loss curve through higher rates. It is asking governments to bend the curve through different decisions about where housing gets built, how it gets engineered, and how risk gets measured before a permit is issued.

That is the shift readers should notice. The premium story is downstream. The planning story is upstream. And upstream is where IBC is now spending its political capital.

The numbers behind the call are not subtle. Canada hit a record $8.5 billion in insured severe-weather damage in 2024, the costliest year on record, followed by another $2.4 billion in 2025. Set against the historical average of roughly $701 million per year between 2001 and 2010 — a figure Canadian Underwriter has tracked alongside CatIQ data — the 2024 total was roughly twelve times the early-2010s baseline.

That pattern shows up in household budgets too. Home and mortgage insurance premiums rose 31% nationally between 2021 and 2025, while overall consumer prices rose about 15% over the same window. Regional pressure has been sharper still: TD estimates cited in industry coverage put five-year premium increases at roughly 68% in British Columbia and 58% in Alberta, both provinces with concentrated wildfire and flood exposure. October 2025 CPI data from Statistics Canada confirms the trend has carried into the most recent quarter, with homeowners' home and mortgage insurance up 6.8% year-over-year and 38.9% cumulatively since October 2020.

This is the part of the story homeowners already feel. What they may not yet see is how loss concentration is reshaping which properties insurers can write at all. Roughly half of all home insurance claims in Canada now relate to water and flooding, and the average flooded-basement repair already exceeds $40,000 according to federal flood-insurance guidance. Overland flood coverage, the layer that actually responds to a creek overtopping its banks, remains an optional endorsement and is priced — or refused — based on the insurer's read of each address's exposure.

That dynamic puts the bureau's policy ask into sharper relief. Without intervention upstream, insurers will keep tightening downstream — by deductible, by exclusion, or by withdrawal.

The piece of the IBC briefing that should give housing planners pause is the exposure embedded in Canada's construction targets. IBC's Liam McGuinty told Canadian Mortgage Professional that of Ottawa's 3.9-million-home target, roughly 500,000 units are sited in high-risk flood zones and more than 200,000 are in high-risk wildfire zones. That is not a marginal slice. It is a meaningful share of the affordability pipeline.

The skew within the existing housing stock is even starker. Drawing on Public Safety Canada studies and IBC's 2025 pre-budget submission, our analysis of Canada's national Flood Risk Finder tool found that more than 1.5 million Canadian households — about 10% of residences — already sit in known high flood-risk areas and account for roughly 78% of expected flood losses. The top 2% of highest-risk homes carry about half of expected losses. Most overland flood policies in force today, however, cover relatively low-risk properties, leaving 90–95% of expected damage concentrated in homes that are largely uninsured or marginally insurable.

Put another way: the risk is not evenly distributed, and the insurance system is not evenly priced against it. New federal mapping makes that imbalance visible at the address level, which is precisely why IBC wants that mapping wired into how municipalities approve subdivisions and how lenders and insurers evaluate properties.

The bureau's policy list reads less like an insurance white paper and more like a planning agenda. It has five components:

This is a regulatory package, not a product pitch. Four of the five items sit outside the insurance industry's direct control. They depend on planning officials, code committees, infrastructure budgets, and political appetite. McGuinty's framing in the same coverage made the rationale explicit: the most effective path to a sustainable home insurance market is more resilient communities, built on better flood maps, smarter land-use decisions, climate-aware codes, and infrastructure investment.

That is a long way from "raise premiums." It is closer to "stop creating new claims."

The reason the bureau's ask has more teeth in 2026 than it did even two years ago is the federal Flood Risk Finder. Public Safety Canada describes the tool as the country's first national, publicly available source of address-level flood hazard and risk information, with a four-point rating scale from low to extreme. Provinces and territories opt in, which means the rollout will be uneven, but the architecture is national.

Underneath the consumer-facing portal sits the Federally Identified Flood Risk Areas dataset maintained by Public Safety Canada, built from a Canada-wide hazard model that combines elevation, rainfall, and water-level data. It produces ratings for coastal, rainfall, riverine, and combined flood types and is designed to support not just public awareness but emergency management and infrastructure screening.

The detail that matters to homeowners is who consumes those ratings beyond the homeowner themselves. Once a federal rating exists for a property, it does not stay on a homeowner's screen. It becomes a data point lenders can request, insurers can incorporate into their pricing models, and municipalities can use to justify zoning decisions. That is the mechanism by which a four-point rating scale quietly becomes a four-tier pricing and approvals framework over time.

There is a quiet wrinkle in the bureau's argument: the affected public has not caught up. Desjardins Insurance research summarized in the May 21 coverage surveyed roughly 4,000 Canadians and found that nearly 70% of insured respondents believed severe weather could damage their home, yet only about one-third had taken protective measures, and just 38% said they were likely to do so within five years.

Brokers describe a similar gap at the transaction point. In the same coverage, an Ajax-based mortgage broker said clients rarely raise rising premiums during applications, and another described home insurance as "not a topic at all" relative to rate and qualification discussions. Buyers are anchored on the rate sheet, not the renewal slip — even though renewal pricing in flood- or wildfire-exposed areas can move several thousand dollars at a single cycle.

That awareness gap is part of why IBC is pushing supply-side levers. Voluntary mitigation, on its own, cannot move the curve at the pace the loss data demands. Codes, zoning, and infrastructure can — but only if they are coordinated.

The piece of the agenda that has not yet moved is a national flood insurance program. Federal budgets have repeatedly signalled support for some form of public-private backstop for high-risk homeowners, but as of May 2026, Ottawa has not committed to a launch timeline. That gap matters: without a federal risk-sharing mechanism, private insurers carry the full underwriting decision on whether a high- or extreme-risk property is offered coverage at all.

Until that backstop arrives, the bureau's planning agenda is effectively the only national lever in play. Better maps, tighter codes, restricted floodplain development, and resilience investment are not just preferable to ever-higher premiums — in the bureau's framing, they are the alternative to insurers continuing to pull back from the highest-risk segments.

For prospective buyers, the practical translation of all of this is that the address itself is becoming a financial variable in a more explicit way than it has been before. A property's flood rating, once visible through a federal tool, will increasingly influence what an insurer will write, what a lender will fund, and what a municipality will permit nearby.

For existing owners, the most concrete signal is what shows up in the renewal letter — and increasingly, in disclosed flood-risk classifications attached to the property. Mitigation works (backwater valves, sump pumps, lot grading, retrofit programs where available) are how individual owners stay in front of that curve. Our deeper coverage of how Canada's home insurance market is tightening around $10,000 deductibles and coverage pullbacks tracks how that pricing dynamic has been playing out.

For developers and municipal planners, the directional read is more straightforward. IBC has effectively published a forward indicator. The combination of federal mapping, code modernization, and political pressure to restrict floodplain development means the floor for risk-appropriate siting is rising, not falling. Projects that pencil today against current zoning may face stricter scrutiny once the next mapping update lands or the next code cycle adopts a higher resilience threshold.

What the May 21 announcement makes clear is that the country's flood problem is being reframed as a planning and underwriting problem rather than a pricing one. Whether governments respond to IBC's specific list is the open question — but the data behind the ask is no longer the subject of meaningful dispute.