35 (1) A tenant shall not alter the locking system on a door giving entry to a rental unit or residential complex or cause the locking system to be altered during the tenant’s occupancy of the rental unit without the consent of the landlord.
(2) If a tenant alters a locking system, contrary to subsection (1), the landlord may apply to the Board for an order determining that the tenant has altered the locking system on a door giving entry to the rental unit or the residential complex or caused the locking system to be altered during the tenant’s occupancy of the rental unit without the consent of the landlord.
(3) If the Board in an application under subsection (2) determines that a tenant has altered the locking system or caused it to be altered, the Board may order that the tenant provide the landlord with keys or pay the landlord the reasonable out-of-pocket expenses necessary to change the locking system.
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Reproduced from Ontario e-Laws under the King's Printer for Ontario (Open Government Licence – Ontario).
Residential Tenancies Act, 2006 — June 1, 2026 (consolidation period to November 27, 2025).
Always confirm the current version on e-Laws. General information, not legal advice.