Climate risk is now a home-buying factor
The 2021 British Columbia floods caused $675 million in insured losses. The 2023 Halifax floods damaged thousands of homes. The 2023 Kelowna wildfire destroyed over 180 structures. Fort McMurray’s 2016 fire remains the costliest insured natural disaster in Canadian history at nearly $4 billion.
These are no longer rare events. Climate change is making floods, wildfires, extreme heat, and severe storms more frequent and more severe across Canada. For home buyers, this creates real financial risk — not just to personal safety, but to property values, insurance costs, and mortgage eligibility.
Canada’s climate risk landscape
Key climate hazards by region
| Region | Primary risks | Trend |
|---|---|---|
| British Columbia (coast) | Flooding (atmospheric rivers), sea-level rise, earthquakes | Increasing — multiple catastrophic floods since 2021 |
| British Columbia (interior) | Wildfire, drought, flooding | Severe — record wildfire seasons in 2021, 2023 |
| Alberta | Wildfire, flooding, hail | Increasing — Calgary floods (2013), Fort McMurray fire (2016) |
| Saskatchewan / Manitoba | Flooding, severe storms | Persistent — spring flood risk tied to snowmelt |
| Ontario (southern) | Urban flooding, severe storms, ice storms | Increasing — Toronto urban flooding events |
| Ontario (northern) | Wildfire, flooding | Increasing — 2023 evacuation events |
| Quebec | Flooding (spring), ice storms, extreme heat | Recurring — Sainte-Marthe-sur-le-Lac (2019), heat domes |
| Atlantic Canada | Hurricane remnants, coastal erosion, flooding | Increasing — Hurricane Fiona (2022), Halifax floods (2023) |
| Northern Canada | Permafrost thaw, wildfire | Accelerating — structural damage from thawing ground |
How climate risk affects property values
The emerging price discount
Studies in Canada and internationally show measurable price effects:
| Factor | Estimated impact on home value |
|---|---|
| Located in a mapped flood plain | −5% to −15% |
| Previous flood damage (disclosed) | −10% to −25% |
| Within wildfire interface zone | −3% to −10% |
| Previous fire damage to the property or immediate neighbourhood | −15% to −30% |
| Rising insurance costs in the area | Gradual downward pressure |
| Recent climate event in the community (within 2 years) | −5% to −20% (often recovers partially over 3–5 years) |
Important: Canadian real estate markets are still adjusting to climate risk. In many areas, prices do not yet fully reflect the hazard because flood maps are outdated, insurance is still available, and buyer awareness is limited. The discount is expected to grow as mapping improves, insurance tightens, and disclosure rules expand.
Regions seeing the most price pressure
- Fraser Valley, BC — flood-affected areas around Abbotsford and Merritt saw slower recovery after 2021.
- Kelowna / West Kelowna, BC — wildfire-adjacent properties experienced post-2023 discounts.
- Atlantic coast — properties at risk of coastal erosion and storm surge face growing scrutiny.
- Flood-plain properties across Quebec — provincial flood-zone mapping led to some resale challenges.
Insurance: the financial front line
Home insurance is where climate risk hits your wallet most directly. Lenders require insurance as a mortgage condition, so if insurance becomes unaffordable or unavailable, your ability to buy or hold a property is at risk.
How insurance costs are changing
| Year | Average Canadian home insurance premium | Annual increase |
|---|---|---|
| 2019 | ~$1,250 | — |
| 2020 | ~$1,340 | +7% |
| 2021 | ~$1,450 | +8% |
| 2022 | ~$1,580 | +9% |
| 2023 | ~$1,750 | +11% |
| 2024 | ~$1,950 | +11% |
Averages vary widely by province and risk level. High-risk properties may pay 2–4x the average.
Insurance availability by risk type
| Risk | Insurance availability | Typical cost impact |
|---|---|---|
| Overland flood (low-risk area) | Widely available | Modest premium add-on ($100–$300/year) |
| Overland flood (high-risk area) | Limited — some insurers exclude | $500–$2,000+ add-on, if available |
| Overland flood (flood plain) | Very limited — many insurers decline | May require specialized underwriter |
| Sewer backup | Widely available as add-on | $50–$200/year |
| Wildfire (low-risk area) | Widely available | Standard premium |
| Wildfire (interface zone) | Available but expensive | 20–50% premium surcharge |
| Wildfire (high-risk zone) | Limited — some insurers decline | May require specialized underwriter |
| Coastal erosion | Very limited | Often excluded or prohibitively expensive |
| Earthquake (BC) | Available as add-on | $500–$2,500/year with high deductible |
What happens if you can’t get insurance?
If standard insurers decline coverage:
- Specialized or surplus-lines insurers may offer coverage at 2–5x the standard rate.
- Government programs are limited. Canada does not have a national flood insurance program like the US NFIP, though one has been proposed.
- Self-insurance is technically possible but means taking on unlimited personal risk and may violate your mortgage covenant, which typically requires adequate insurance.
- Lender-placed (force-placed) insurance — if you fail to maintain coverage, your lender will purchase a policy on your behalf at a high premium and add it to your mortgage costs. This coverage protects the lender, not you.
Mortgage implications of climate risk
How lenders are responding
Canadian mortgage lenders are increasingly aware of climate risk, though most haven’t yet formalized it into underwriting criteria.
| Lender action | Current status |
|---|---|
| Requiring proof of insurance | Standard — all lenders require this |
| Checking flood-zone status | Emerging — some lenders flag properties in mapped flood plains |
| Climate-adjusted property valuation | Rare — most appraisals don’t explicitly price climate risk |
| Declining mortgages in high-risk zones | Very rare — but happens when insurance is unavailable |
| CMHC climate risk incorporation | In progress — CMHC has published climate risk frameworks |
CMHC’s direction
CMHC has been actively studying climate risk’s impact on housing and mortgage insurance. Key developments:
- Published climate risk assessment frameworks for mortgage underwriting.
- Began requiring more detailed property-level risk data from lenders.
- Exploring how to incorporate climate risk into CMHC insurance premiums — higher-risk properties could eventually pay higher premiums.
- Supporting development of national flood mapping and risk scoring.
What this means for buyers
- Today, you can likely get a mortgage on a high-risk property as long as you can get insurance.
- In the coming years, expect higher insurance costs, tighter underwriting, and potentially higher CMHC premiums for flood-prone or fire-prone properties.
- Properties in high-risk zones may become harder to sell as these changes take effect — affecting your long-term investment.
How to assess climate risk before buying
Step 1 — Check flood maps
| Resource | Coverage | Access |
|---|---|---|
| Federal flood maps (floods.ca) | National (incomplete — many areas unmapped) | Free online |
| Ontario flood mapping | Ontario Conservation Authorities | Contact your local CA |
| BC flood maps | BC government | iMapBC portal |
| Quebec flood zones | CEHQ (Centre d’expertise hydrique) | Free online |
| Alberta flood hazard maps | Alberta Environment | Free online |
| Saskatchewan flood risk | Water Security Agency | Free online |
| Municipal zoning maps | Your city/municipality | Planning department |
| ClimateData.ca | National projections | Free online |
Important: Many Canadian flood maps are decades old and don’t reflect current risk. A property that isn’t in a mapped flood zone may still face significant flood risk from urban flooding, inadequate drainage, or infrastructure limitations.
Step 2 — Check wildfire risk
| Resource | What it shows |
|---|---|
| Canadian Wildland Fire Information System (ciffc.ca) | Current fire conditions and historical data |
| FireSmart Canada (firesmartcanada.ca) | Community-level wildfire preparedness assessments |
| BC Wildfire Service | Historical fire perimeters, current risk |
| Alberta Wildfire | Risk maps and FireSmart community status |
| Your municipal fire department | Whether property is in a wildland-urban interface zone |
Step 3 — Check insurance availability BEFORE making an offer
This is critical. Do not assume you can get affordable insurance. Before firming up an offer:
- Contact 3+ insurance providers for quotes on the specific property.
- Ask about overland flood coverage specifically — it’s often excluded or optional.
- Ask about wildfire surcharges if the property is near forested areas.
- Ask what happens to your premium if a climate event occurs nearby during your policy term.
- Get quotes in writing — verbal estimates are not binding.
Step 4 — Review property history
| What to check | Where to find it |
|---|---|
| Previous insurance claims | Ask the seller (they must disclose known material defects in most provinces) |
| Previous flood events | Municipal records, news archives, neighbours |
| Basement waterproofing / sump pump | Home inspection |
| Lot grading and drainage | Home inspection, survey |
| Distance to nearest water body | Survey, Google Maps |
| Stormwater infrastructure age | Municipal engineering records |
| Building code compliance (flood-resistant construction) | Building permit records |
Step 5 — Factor climate risk into your offer price
If the property has elevated climate risk, consider:
- Pricing in higher ongoing insurance costs ($500–$3,000+ per year above average).
- Budgeting for mitigation upgrades (backwater valve, sump pump, fire-resistant materials, lot grading).
- Adjusting your offer price downward to reflect the risk premium.
- Evaluating the 5–10 year outlook — will this property become harder to insure or sell?
Climate-resilient home features
Properties with these features are better protected and may face lower insurance premiums:
| Feature | Hazard addressed | Approximate cost to add |
|---|---|---|
| Backwater valve | Sewer backup / urban flooding | $2,000–$5,000 |
| Sump pump with battery backup | Basement flooding | $1,500–$3,500 |
| Lot grading away from foundation | Surface water flooding | $2,000–$8,000 |
| Fire-resistant roofing (metal, Class A) | Wildfire ember exposure | $10,000–$25,000 (new roof) |
| Non-combustible siding | Wildfire radiant heat | $15,000–$40,000 |
| Defensible space (1.5m non-combustible zone) | Wildfire direct flame | $2,000–$10,000 |
| Impact-resistant windows | Wind, hail, flying debris | $500–$1,500 per window |
| Roof tie-downs / hurricane straps | Wind uplift | $1,000–$3,000 (new construction) |
| Elevated electrical panel | Flooding | $2,000–$5,000 |
| Waterproof basement membrane | Ground and surface water | $10,000–$30,000 |
Some insurers offer discounts (5–15%) for verified mitigation measures. Ask your insurer what upgrades would qualify.
Government programs and support
| Program | What it covers | Eligibility |
|---|---|---|
| Disaster Financial Assistance Arrangements (DFAA) | Federal cost-sharing with provinces for disaster recovery | Activated after declared disaster — not preventive |
| Intact Centre on Climate Adaptation | Research, education, and resources | Public — free resources |
| CMHC Green Home programs | Partial premium refund for energy-efficient / resilient homes | CMHC-insured borrowers meeting criteria |
| FCM Green Municipal Fund | Infrastructure adaptation funding for municipalities | Municipal governments |
| Provincial adaptation grants | Varies — some provinces offer flood mitigation rebates | Check your province |
Canada is developing a national flood insurance program to ensure baseline coverage is available in high-risk areas. As of 2025, the program is in consultation stage with no confirmed launch date.
Climate risk by property type
| Property type | Key climate vulnerabilities |
|---|---|
| Detached house (urban) | Urban flooding, sewer backup, ice dams, severe storms |
| Detached house (rural/acreage) | Wildfire, well water contamination, road access during events |
| Condo (mid/high rise) | Underground parking flooding, power outages, extreme heat (upper floors) |
| Waterfront property | Flood, storm surge, erosion, rising water levels |
| Basement apartment | Highest flood vulnerability, sewer backup |
| Heritage home | Older building systems, less resilient to extreme weather |
| New construction | Generally better code compliance, but site selection matters |
Long-term outlook for Canadian homeowners
What’s expected over the next 10–20 years
- Insurance premiums will continue rising faster than inflation, especially in high-risk areas.
- Some properties will become uninsurable through standard markets, requiring government backstop programs.
- Property disclosures will likely expand to include climate risk data — buyers will know more before purchasing.
- Mortgage underwriting will increasingly incorporate climate risk — expect CMHC and lender guidelines to tighten.
- Building codes will continue strengthening (BC and Ontario have already updated codes for flood and fire resilience).
- Climate-resilient properties will command a premium, while high-risk, unmitgated properties will see value erosion.
- Municipal adaptation infrastructure (stormwater upgrades, flood barriers, fire breaks) will influence neighbourhood-level values.
What buyers should do now
- Check climate risk before every purchase — treat it like checking the roof or foundation.
- Get insurance quotes early — insurance availability is your real-world test of risk.
- Budget for mitigation — protecting your property protects your investment.
- Think about resale — will a buyer 10 years from now face higher insurance costs or tighter mortgage rules?
- Consider new construction — modern building codes offer better resilience than older stock.