Renting in Ontario means you expect a safe, healthy place to live, and issues like mold, persistent pests, or poor ventilation can affect your health and legal rights as a tenant. This guide explains what tenants and renters should do when they discover mold or vermin, how Ontario law treats habitability, the practical documents and steps to report problems, and when to involve public health or the Landlord and Tenant Board. It uses plain language and concrete examples so you can act quickly: how to document damage, what to include in written notices, when a repair request becomes an application to the Board, and where to get government help and official forms in Ontario.
Why mold and pests matter for tenants in Ontario
Mold and infestations can make a unit unfit to live in and can cause health problems for people with asthma, allergies, or weakened immune systems. Under the Residential Tenancies Act, 2006 tenants have a right to a unit that meets basic standards of habitability and safety [1]. If you believe your unit is unsafe you can ask your landlord to fix the problem and, if necessary, escalate to your local public health unit or the Landlord and Tenant Board.
Who is responsible?
Generally the landlord must maintain the structure and systems of the rental unit so it is free from mold caused by building problems, leaks, or poor ventilation. Tenants are expected to use the unit reasonably and report problems promptly in writing. For practical guidance on what landlords and tenants must do, see Obligations of Landlords and Tenants: Rights and Responsibilities Explained and keep a written record when you notify your landlord. If the issue involves pests, consult Dealing with Pests in Your Rental: Tenant Rights and Effective Solutions for targeted steps to resolve infestations.
Common signs and immediate steps
- Document the problem with clear photos or videos, showing dates and affected areas.
- Notify your landlord in writing (email or letter) describing the issue, the date you first noticed it, and any health effects.
- Allow reasonable access for inspections or repairs but request proper notice if you need privacy or precautions.
- Tackle minor, safe steps like improving ventilation while waiting for repairs, and keep receipts for any purchases.
- Contact your local public health unit if the mould is extensive or if occupants are getting sick [3].
When to involve the Landlord and Tenant Board
If your landlord does not address serious mould or persistent pest problems within a reasonable time, you can apply to the Landlord and Tenant Board for remedies such as orders to repair, rent abatement, or termination in some cases. The Landlord and Tenant Board handles tenancy disputes in Ontario and offers guidance on filing an application [2]. Before you apply, gather your documentation, copies of written notices to the landlord, photos, receipts for remedial expenses, and any public health reports.
FAQ
- Can I withhold rent if my unit has mould or pests?
- Withholding rent is risky and generally not recommended; instead, give written notice to your landlord, document the issue, contact public health if needed, and consider filing an application with the Landlord and Tenant Board to request repairs or rent reduction [2].
- How quickly must my landlord fix mould or pest problems?
- Landlords must fix issues within a reasonable time depending on the severity. Immediate health risks require urgent action and may involve public health; non-urgent problems should still be remedied promptly once reported in writing [3].
- What proof should I keep to support a complaint?
- Keep dated photos or videos, written notices to your landlord, repair receipts, medical notes if applicable, and any public health inspection reports.
How-To
- Document the issue thoroughly: photos, videos, dates, and notes about who is affected.
- Send a written notice to your landlord describing the problem and requested repairs; keep a copy and a sent timestamp.
- If the landlord does not act, contact your local public health unit for an inspection or advice.
- File an application with the Landlord and Tenant Board if repairs are not completed; include all evidence and a clear request for remedies.
- Seek free tenant advice or a community legal clinic if you need help preparing evidence or the application.
Key Takeaways
- Document everything with dates, photos, and copies of notices to the landlord.
- Notify the landlord in writing and keep proof of delivery.
- Contact public health for health risks and the Landlord and Tenant Board for legal remedies.
Help and Support / Resources
- Landlord and Tenant Board (Tribunals Ontario)
- Residential Tenancies Act, 2006 (e-Laws)
- Public Health Ontario
- [1] Landlord and Tenant Board (Tribunals Ontario)
- [2] Residential Tenancies Act, 2006 (e-Laws)
- [3] Public Health Ontario
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