Does Home Insurance Cover Radon in Canada?

Last updated: 31 May 2026

A note before you read. This is general information for Canadian homeowners. It is not insurance, legal, or financial advice. Policies and wordings vary by insurer and province — read your own policy and confirm with your insurer or broker.

Quick answer

Almost never. Standard Canadian home insurance does not cover radon testing or radon mitigation. Insurers pay for sudden, accidental events (fire, theft, a burst pipe), and they treat radon reduction as home maintenance; most policies also carry a pollutant/contaminant exclusion that captures radon gas. The good news: testing is cheap — a long-term RadonTest.ca kit is $89 all-in — and on newer homes, a new-home warranty (not insurance) may pay for mitigation. In Ontario, the Tarion warranty can cover up to $50,000 for radon above the Health Canada guideline, for the full 7 years of the warranty.

Table of contents

1. Why home insurance excludes radon
2. Insurance vs new-home warranty (the key distinction)
3. The narrow exceptions worth checking
4. What actually protects — and funds — you
5. FAQ
6. Sources & disclaimers

1. Why home insurance excludes radon

Home insurance responds to fortuitous perils — sudden, accidental events. Radon is the opposite:

• It's gradual (a long-term average exposure, not an event), and
• It's manageable by the homeowner (you can test and mitigate).

For those reasons, insurers treat radon reduction like other maintenance/environmental issues (e.g., long-term humidity and mould) that fall outside standard coverage. On top of that, most Canadian home policies contain a pollution/contamination exclusion, and radon gas is generally considered a pollutant under that wording. Canadian insurers say so plainly — for example, one major online insurer notes that steps to reduce radon are "considered maintenance," and home insurance is "meant to cover damage from sudden and accidental events."

2. Insurance vs new-home warranty (don't confuse them)

This is the distinction people miss most:

In Ontario, the Tarion new-home warranty can cover radon mitigation — up to $50,000 — when a home exceeds the Health Canada guideline of 200 Bq/m³, for the full seven-year warranty period. Ontario is one of the only jurisdictions in Canada that covers radon remediation in its statutory new-home warranty. See our Tarion radon warranty claim guide and the province-by-province new-home warranty guide.

3. The narrow exceptions worth checking

• New-home warranty (above) — your best shot at funded mitigation on a newer home.
• Builder/contractor liability — if a builder failed to meet a radon-related building-code requirement, that's a builder issue, not an insurance one.
• Specialty endorsements — rare, but ask your broker whether any environmental endorsement applies to your policy.

Don't assume — read your wording and ask your insurer in writing.

4. What actually protects — and funds — you

Since insurance won't pay, your protection is testing + mitigation, and there are funding routes that aren't insurance:

1. Test with a long-term 91+ day kit (cheap, definitive, and a documented report you keep).
2. If ≥ 200 Bq/m³, mitigate with a C-NRPP-certified professional (see radon mitigation cost in Canada).
3. Look for grants, not insurance: the national Lungs Matter grant (up to $1,500), provincial programs, and warranty coverage — all in our radon grants, rebates & tax credits guide.
4. Keep your lab report — useful for resale disclosure and any warranty claim.

RadonTest.ca makes step one easy: $89, everything included — C-NRPP-approved kit, shipping both ways, Canadian certified-lab analysis, and a documented result you keep (English or French). Order your kit »

5. FAQ

Does home insurance cover radon mitigation in Canada? Almost never. Standard home insurance covers sudden accidental perils, not gradual environmental conditions like radon, which are treated as a homeowner maintenance responsibility — and most policies have a pollutant/contaminant exclusion that captures radon gas.

Does insurance pay for a radon test? No. Testing is inexpensive and is the homeowner's responsibility; a long-term kit is about $89 all-in.

What about a new-home warranty? Different from insurance. In Ontario, Tarion can cover up to $50,000 of radon mitigation on qualifying newer homes that exceed 200 Bq/m³, for 7 years. Check your province's program.

Is there any funding if insurance won't pay? Yes — but it's grants, not insurance. The national Lungs Matter grant (up to $1,500), Nova Scotia's low-income grant, Saskatchewan's tax credit, and new-home warranty coverage. See our grants guide.

Will a high radon result raise my insurance or hurt resale? It generally doesn't affect insurance. For resale, a documented test (and mitigation if needed) is a positive — buyers increasingly ask, and a mitigated home shows you handled it.

6. Sources & disclaimers

Sources: Health Canada — radon guideline (200 Bq/m³); standard Canadian home-insurance peril/exclusion structure (e.g., Square One — Radon gas in Canadian homes); Tarion — how your new-home warranty protects you against radon; C-NRPP "Find a Professional" directory.

Important disclaimers. Insurance policies and warranty programs vary by provider and province and change over time; this article is general information as of 31 May 2026 and is not insurance, legal, or financial advice. Coverage limits (including the Tarion figure) and program terms can change — read your policy and confirm coverage with your insurer, broker, or warranty provider.

Insurance won't test your home for you — and testing is the only way to know. Get a $89 all-in RadonTest.ca kit »