Alberta Landlord Duty to Disclose Known Defects

Landlord Compliance & Penalties Alberta 4 min read · published June 24, 2026 Flag of Alberta

Many tenants in Alberta face uncertainty when they find defects in their rental home. Knowing what landlords must tell you about known problems — from safety hazards to repair backlogs — helps you protect your health, your quiet enjoyment and your rights as a renter. This guide explains, in plain language, when a defect must be disclosed, how to document problems, what you can ask your landlord to do, and when to use Alberta's dispute resolution services. It also points to the official forms and tribunal you may need and gives practical examples of next steps so you can resolve issues without unnecessary delay.

What counts as a known defect?

A known defect is any problem the landlord is aware of that affects the unit's safety, habitability or intended use. Common examples include heating failures, plumbing leaks, mold growth, pest infestations, or structural damage. Landlords should disclose issues that could affect your health or your ability to live in the unit comfortably.

In most regions, tenants are entitled to basic habitability standards.

Landlord obligations under Alberta law

In Alberta, tenancy rights and duties are set out in provincial legislation and enforced through the provincial dispute service. Tenants can expect landlords to maintain premises in a reasonable state of repair and to tell prospective renters about any known hazards or defects that the landlord is aware of before or shortly after move-in. For the formal legislation, see the Residential Tenancies Act [1].

Detailed documentation increases your chances of success in disputes.

Practical steps for tenants when you discover a defect

Follow clear steps to protect your rights and health. Start by notifying the landlord in writing, keep records, allow reasonable access for repairs, and escalate to the tribunal if needed.

  • Document the defect with photos, dates and a short description of how it affects the unit.
  • Contact your landlord promptly and explain the issue in writing, including a reasonable deadline for repair.
  • Allow the landlord reasonable access for repairs while protecting your privacy and safety.
  • Keep receipts for any temporary fixes you arrange with the landlord's consent.
Keep all rent receipts organized and stored safely.

When to use Alberta's dispute service

If the landlord does not address a serious defect within a reasonable time, you can apply to the Residential Tenancy Dispute Resolution Service (RTDRS) for an expedited hearing and decision. The RTDRS accepts applications about repairs, rent reductions, and other tenancy problems; see the RTDRS information and forms page for how to apply [2].

Respond to legal notices within deadlines to avoid losing rights.
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What the RTDRS can order

The RTDRS can order landlords to complete repairs, reduce rent for the period affected by the defect, reimburse tenants for reasonable repair costs or temporary housing, and issue termination or possession orders when necessary. Decisions can be legally binding and enforceable.

How to prepare a strong application or complaint

  • Gather clear evidence: dated photos, videos, repair requests and any landlord responses.
  • Include copies of written notices you sent and receipts for any emergency repairs or accommodations.
  • Explain the timeline concisely and state the remedy you want (repair, rent reduction, reimbursement, or termination).
Detailed documentation increases your chances of success in disputes.

Tenant remedies and limits

Tenants may be entitled to rent abatement (a reduction) while a defect makes the unit less useful, or to compensation for out-of-pocket expenses. However, avoid unilateral actions like withholding all future rent without legal advice, and follow RTDRS guidance on remedies.

Common examples and outcomes

  • Mold that affects health: RTDRS can order professional remediation and possible rent reduction.
  • No heat in winter: repair orders or emergency temporary accommodation and compensation are common outcomes.
  • Ongoing leaks ignored by landlord: order for repairs and reimbursement for tenant costs may be granted.

What tenants should read next

For details on health and safety concerns, review Health and Safety Issues Every Tenant Should Know When Renting. For a clear summary of obligations on both sides, see Obligations of Landlords and Tenants: Rights and Responsibilities Explained. To look for alternative housing while your issue is unresolved, Explore Houseme for nationwide rental listings.

FAQ

Do landlords have to disclose defects before I move in?
Landlords should disclose known defects that affect safety or habitability; if a landlord tells you nothing, ask for written confirmation and document any issues you later discover.
Can I withhold rent if a landlord won’t fix a problem?
Withholding future rent is risky without tribunal approval. Instead, document the issue and consider applying to the RTDRS for a rent reduction or repair order.
How long does it take to get an RTDRS decision?
Timelines vary, but RTDRS is generally faster than court. Bring complete evidence and follow filing instructions to avoid delays.

How-To

  1. Tell the landlord about the defect in writing and request a repair with a reasonable deadline.
  2. Gather evidence: photos, videos, dated messages and receipts for related expenses.
  3. Allow reasonable access for repairs while protecting your privacy and documenting visits.
  4. If the landlord does not act, apply to the RTDRS with your evidence and desired remedy.
  5. Attend the hearing (virtual or in-person), present your documents, and follow the decision's instructions.

Help and Support / Resources


  1. [1] Residential Tenancies Act (Alberta) - Queen's Printer
  2. [2] Residential Tenancy Dispute Resolution Service (RTDRS) - Alberta.ca

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David Chen
David Chen

Tenant Law Analyst, Tenant Rights Canada

David specializes in Ontario residential tenancy law and Northern territories housing regulations. He has followed developments at the Landlord and Tenant Board closely for over eight years and writes extensively on LTB procedures, rent increases, and maintenance obligations.