Is the Landlord or Tenant Responsible For Damage Caused By An Overflowing Toilet?

The Landlord Is, Generally, Responsibility For the Repair of Damage Arising Due to a Toilet Overflow; However, If the Landlord Can Prove That the Tenant Probably Caused the Damage, Then the Tenant May Be Responsible.


Understanding Who Is Responsible For Damage From An Overflowing Toilet Requires Determination of the Cause

Damage Arising From Toilet Overflow Involving Perceived Misuse Requires Proof of Probable Cause Disputes between landlords and tenants regarding who is responsible for the costs of cleaning up and repairing water damage caused by an overflowing toilet, sewage backup, or other source of water damage, can be costly and troublesome. The cause of such damage can be difficult to determine and thus determining who is responsible for paying for the repairs can lead to heated disagreements.

The Law

The Landlord Tenant Board case of S.M.O.F. v. D.C.TET-71837-16 (Re), 2016 CanLII 72064, provides a thorough explanation for how the determination of responsibility for an overflowing toilet or sewage backup should occur whereas it was said:


24.  With respect to the sewage back up the Tenant’s application is based on the rights set out in sections 20 and 22. The relevant provisions read as follows:

20. (1)  A landlord is responsible for providing and maintaining a residential complex, including the rental units in it, in a good state of repair and fit for habitation and for complying with health, safety, housing and maintenance standards.

22.  A landlord shall not at any time during a tenant’s occupancy of a rental unit and before the day on which an order evicting the tenant is executed substantially interfere with the reasonable enjoyment of the rental unit or the residential complex in which it is located for all usual purposes by a tenant or members of his or her household.

25.  The Landlord’s claim for compensation related to the sewage back up is based on sections 34 and 89(1) which say:

34.  The tenant is responsible for the repair of undue damage to the rental unit or residential complex caused by the wilful or negligent conduct of the tenant, another occupant of the rental unit or a person permitted in the residential complex by the tenant.

89. (1)  A landlord may apply to the Board for an order requiring a tenant to pay reasonable costs that the landlord has incurred or will incur for the repair of or, where repairing is not reasonable, the replacement of damaged property, if the tenant, another occupant of the rental unit or a person whom the tenant permits in the residential complex wilfully or negligently causes undue damage to the rental unit or the residential complex and the tenant is in possession of the rental unit.

26.  The wording of subsection 20(1) indicates that as soon as the sewage backup problem started the Landlord was in breach of the Act. She had an obligation to investigate and repair in a timely fashion. Because of this obligation it is not prudent for a landlord to refuse to do repairs even if the landlord believes the tenant is responsible for the disrepair; rather, the provisions of the Act set out above should be read together. In the situation where the landlord believes the tenant is responsible for causing the disrepair, the landlord should do the repairs and then seek to recover the cost if he or she can establish the tenant, an occupant or a guest wilfully or negligently caused the damage.

The S.M.O.F. case as provided above, shows that the Residential Tenancies Act, 2006, statutorily prescribes the duty for maintenance issues, including the cost of repairing damage, upon the landlord.  Subsequently, where the landlord believes that the tenant or a guest of the tenant caused the damage, the landlord may initiate a proceeding within the Landlord Tenant Board via an Application that seeks an Order directing the tenant to reimburse the landlord for the repair expenses as incurred by the landlord.

When a landlord believes that damage to a rental unit was caused by misuse or misconduct of a tenant or a guest of the tenant, the law imposes the burden to prove such upon landlord. A landlord must prove more than just the possibility, and instead must prove the probability that damage was caused by a tenant or a guest of the tenant.  The burden to prove that damage was more than likely due to the improper conduct of a tenant, or guest of the tenant, was explained within the case of S.M.O.F. where it was stated:


28.  With respect to the Landlord’s application the issue that arises is related to the burden of proof. With respect to her damage claim, she bears the onus of leading sufficient evidence to establish that it is more likely than not that the Tenant, an occupant or a guest wilfully or negligently caused the damage. There is actually no suggestion in the evidence that anyone wilfully caused the plumbing problem. Rather the Landlord’s claim is that someone was negligent in how they use the toilet and that caused a blockage in the sewage line.

29.  The Landlord’s evidence in this regard is entirely hearsay and circumstantial. Hearsay is admissible before the Board and circumstantial evidence can be sufficiently compelling to meet the burden of proof. But here the Landlord’s evidence essentially amounts to a belief that the Tenant or an occupant flushed something down the toilet they should not have. That belief is not unreasonable but there are other plausible explanations for what occurred.

30.  As I stated at the hearing, it is possible that one of the Landlord’s contractors who were present in the residential complex working during the month prior to the incident flushed something they should not have. Further, and absent expert evidence from the Landlord’s plumber, it seems to me it is also plausible that the blockage was caused by something that had been in the sewage system for some time but had been recently dislodged because of the excessive rainfall on July 14, 2016.

31.  In other words the evidence is insufficient to establish that it is more likely than not that the Tenant, an occupant or a guest negligently caused the plumbing problem. It is certainly possible, but the Landlord’s evidence does not establish it is probable.

Summary Comment

A landlord is responsible for repairing damage. If a landlord believes that damage was caused by a tenant or guest of a tenant, then the landlord must prove such cause on a balance of probability, meaning that the alleged cause was more than likely the cause of the damage rather than just possible the cause of the damage.

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