Dealing with Mold and Infestations in Alberta Rentals

Maintenance & Repairs Alberta 3 min read · published March 09, 2026 Flag of Alberta

If you're a tenant in Alberta facing issues with mold or infestations, it's essential to know your rights and responsibilities. This guide will help you understand the legal aspects, the steps you can take, and the possible actions landlords are required to perform to ensure your rental home is safe and healthy.

Understanding Mold and Infestations in Alberta Rentals

Tenants often encounter problems like mold and infestations which can significantly impact their living conditions and health. In Alberta, both tenants and landlords have specified responsibilities to ensure rental properties are maintained properly.

Mold in Rental Properties

Mold can develop due to excess moisture, often from leaks, poor ventilation, or water damage. Under the Residential Tenancies Act in Alberta1, landlords have a responsibility to maintain the rental property in a way that prevents such issues. As a tenant, you should:

  • Immediately inform your landlord of any signs of mold and possible causes like leaks or water damage.
  • Ensure you are not contributing to the problem through negligence (e.g., not ventilating the bathroom).
Keep dated photos of mold, notes on leaks, and copies of any repair requests. If health risks are present, request a formal mold assessment and a written repair plan from the landlord; you can also contact the Alberta Residential Tenancy Dispute Resolution Service for guidance.

In serious cases, if the landlord does not address mold issues, tenants may file a complaint for emergency repairs. For more detailed guidance, consider reading about Emergency Situations and Repairs: Tenant Rights and Responsibilities.

Infestations in Rental Homes

Dealing with infestations such as rodents or insects is another common issue. Landlords must ensure rental properties are pest-free before tenants move in and address infestations that occur during the tenancy, unless the tenant's actions are responsible for the problem. The process includes:

  • Notifying the landlord immediately upon discovering any infestation.
  • Following prevention and mitigation methods provided by the landlord or pest control services.
Landlords must address pest issues and may be responsible for pest control before move-in and during tenancy; keep records of pest sightings and communications and request a written service plan or timeline from the landlord.

For detailed advice on handling such issues, check Dealing with Pests in Your Rental: Tenant Rights and Effective Solutions.

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Tenant and Landlord Responsibilities

Under Alberta's laws, maintaining a habitable living environment is a shared responsibility between tenants and landlords. While tenants must report issues promptly, landlords need to address them in a timely manner.

The Alberta Residential Tenancies Act emphasizes both tenant compliance and landlord maintenance obligations, ensuring rental homes remain in good condition during occupancy.2

Steps to Address Mold or Infestations

Here are the steps a tenant in Alberta should follow:

  • Document the Issue: Take pictures and notes as soon as you notice mold or signs of pests.
  • Notify the Landlord: Provide a written notice detailing the problem and request for it to be resolved.
  • Follow Up: If the landlord fails to take action, consider bringing the issue to the Alberta Residential Tenancy Dispute Resolution Service (RTDRS).

For comprehensive guidance on the rights and responsibilities of tenants and landlords, visit Obligations of Landlords and Tenants: Rights and Responsibilities Explained.

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FAQ on Mold and Infestation Issues

  1. What should I do if I find mold in my rental? Inform your landlord immediately and document the issue. Ensure the area causing the mold is not due to tenant negligence.
  2. Who is responsible for pest control in Alberta rentals? Landlords are responsible for ensuring the property is pest-free before tenants move in and fixing infestations unless the tenant caused the issue.
  3. Can I withhold rent if my landlord fails to fix mold problems? Withholding rent is not recommended without legal advice, as it could lead to eviction. Instead, apply for repairs through local tenant dispute services.
  4. Are landlords required to disclose past mold or infestation issues? There is no legal obligation, but ethical practice would involve informing tenants of potential recurring issues.
  5. How quickly must a landlord respond to reports of mold or pests? Immediate action is encouraged, but exact timelines depend on the severity and potential health risk of the issue.

Need Help? Resources for Tenants

If you're dealing with unresolved mold or pest issues, contact the Alberta Ministry of Service Alberta or the Alberta Residential Tenancy Dispute Resolution Service for assistance. Additionally, consult local tenant advocacy groups for support and advice specific to your situation.

When seeking help, have your address, a brief description of the mold or pest problem, dates of notices, and copies of photos ready; ask about eligibility for emergency repairs and dispute-resolution timelines.

1. Residential Tenancies Act, RSA 2000, c R-17.1

2. Alberta Residential Tenancies Act Overview

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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.