Radon Gas Testing: BC Landlord Duties Explained

Maintenance & Repairs British Columbia 3 min read · published June 24, 2026 Flag of British Columbia
Radon is an invisible, radioactive gas that can build up in homes and raise long-term lung cancer risk. As a renter in British Columbia you may wonder what your landlord must do about radon testing, mitigation, and tenant notification. This guide explains practical steps tenants can expect, landlord duties under BC rules, the official forms to use, and where to get help if a problem is not addressed. It uses plain language for tenants, highlights timelines for testing and mitigation, and points to provincial and federal health resources so you can protect your household and document any concerns.

Landlord duties and tenant rights in British Columbia

Landlords in BC have an obligation to keep rental properties safe and fit for habitation under the Residential Tenancy Act and related rules.[1] That duty can include arranging radon testing or responding to elevated test results when radon poses a health risk. Tenants should notify the landlord in writing and request that testing or mitigation be arranged; copies of communications and test results strengthen your position if a dispute follows. For an accessible overview of routine safety expectations for renters see Health and Safety Issues Every Tenant Should Know When Renting.

Keep written records of radon test dates and results.

Health agencies recommend long-term testing (typically a minimum of 91 days) to capture seasonal variation; short tests can miss elevated levels.[4] If a test shows an average above Health Canada’s guideline of 200 Bq/m3, landlords should arrange qualified mitigation to reduce levels. Tenants can ask the landlord to provide the test report and any mitigation plan in writing, and may file an application for dispute resolution with the Residential Tenancy Branch if the landlord refuses to act.[2]

Both tenants and landlords benefit from knowing their basic responsibilities; for a clear summary of obligations see Obligations of Landlords and Tenants: Rights and Responsibilities Explained. If you are hunting for a new rental while prioritizing safety features, you can also Find Vancouver apartments for rent to compare listings and neighbourhood information.

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FAQ

What radon level is considered high in Canada?
The federal guideline is 200 becquerels per cubic metre (Bq/m3); results above that level are considered elevated and usually trigger mitigation recommendations.[4]
Can a tenant order their own radon test?
Yes. Tenants can buy long-term detectors and share results with the landlord; if a landlord fails to act, bring records and test evidence to the Residential Tenancy Branch when applying for dispute resolution.[2]
What form do I use to escalate a landlord who won’t fix high radon?
Use the Residential Tenancy Branch Application for Dispute Resolution (available from the RTB forms page) to ask for an order requiring testing, mitigation, or compensation where appropriate.[2]

How-To

  1. Serve a written notice asking the landlord to arrange a certified long-term radon test and to provide the written results.
  2. If the landlord does not act within a reasonable timeline, place an approved long-term detector and leave it undisturbed for at least 91 days.
  3. Document placement, dates, photos, and packaging as evidence and give copies of results to your landlord and keep originals for yourself.
  4. If the average result is above 200 Bq/m3, ask the landlord to hire a qualified mitigator to reduce radon and agree a completion timeline.
  5. If the landlord refuses or fails to fix unsafe levels, file an Application for Dispute Resolution with the Residential Tenancy Branch with your evidence.

Key Takeaways

  • Long-term radon testing (about 91 days) gives the most reliable results for tenant safety.
  • Keep written requests and copies of test results to document your concerns.
  • The Residential Tenancy Branch can review disputes and order mitigation when landlords do not act.

Help and Support / Resources


  1. [1] Residential Tenancy Act - BC Laws
  2. [2] Residential Tenancy Branch forms and applications
  3. [3] BC Centre for Disease Control: Radon information
  4. [4] Health Canada: Radon measurement and mitigation guidance

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Sarah Mitchell
Sarah Mitchell

Senior Housing Rights Researcher, Tenant Rights Canada

Sarah has spent over a decade researching tenant legislation across Western Canada, with a particular focus on British Columbia and Alberta. She holds a certificate in Housing Policy from Simon Fraser University and has contributed to several housing advocacy organizations.