Your landlord losing a master key raises important privacy and safety concerns for renters in Ontario. As a tenant, you have rights around notice, entry, security and urgent repairs, and there are clear practical steps you can take to protect yourself, document the incident and request prompt action. This guide explains how to ask for lock changes or rekeying, what evidence to keep, which official forms and tribunals can help, realistic timelines to expect, and when it may be appropriate to involve the Landlord and Tenant Board. It uses plain language and tenant-focused examples so you can act confidently whether you rent a condo, apartment or house in Ontario.
What losing a master key means for tenants
If a landlord reports a lost master key, tenants should treat this as a potential privacy and security incident. The Residential Tenancies Act, 2006 defines rules about entry, notice and landlord obligations that protect tenants' rights[1]. The Landlord and Tenant Board (LTB) can hear disputes if a landlord fails to act or if a tenant seeks orders for repairs, lock changes or compensation[2].
Your immediate steps
- Contact the landlord calmly and ask when and where the key was lost and whether it was reported to the building manager or police.
- Document the notification: save emails, texts or voicemail and write down dates and times you were told.
- Request written confirmation that the landlord will arrange rekeying or lock replacement and ask for a timeline.
What to ask the landlord to do
Reasonable requests include rekeying shared building master systems, replacing your unit lock or changing cylinder cores if you rent a self-contained unit. If the landlord does not agree, ask for the refusal in writing and note their reasons; you can then consider filing an application with the Landlord and Tenant Board for an order to protect your safety.[2]
Evidence and timelines
Good evidence and reasonable timelines make tenant requests stronger. If a landlord promises action, set a reasonable deadline (for example, within one week) and confirm that deadline in writing.
- Gather evidence: copies of the landlords notification, photos of locks, and any witness notes about conversations.
- Send a written request asking for specific remedies (rekeying, lock replacement) and keep a copy.
- Allow a reasonable period for the landlord to act, typically 37 to 14 days depending on urgency, and note any missed deadlines.
When to involve the Landlord and Tenant Board
If the landlord refuses or unreasonably delays needed lock changes and you feel your safety or privacy is at risk, you can file an application with the Landlord and Tenant Board for an order requiring the landlord to take action or for compensation. Before filing, check the LTB forms page for the correct application to use and consider local tenant advice services for help with paperwork. For emergency situations affecting habitability or safety, also review repair and emergency guidance and your options for urgent remedies.
Other tenant protections and practical tips
- Ask for a copy of the landlords risk assessment and any police report if the loss involved theft or unauthorized access.
- If you must pay for a lock change due to landlord delay, save receipts and ask whether the landlord will reimburse you; you may be able to seek repayment at the Board.
- Contact local tenant services for advice on next steps and to find templates for written requests and applications.
If security concerns make your home unsafe or you need to find other housing, consider your options carefully and look for local listings or tools that help you search quickly. You can also consult resources on tenant obligations and emergency repairs for clarity on who must act and when; see Emergency Situations and Repairs: Tenant Rights and Responsibilities and Obligations of Landlords and Tenants: Rights and Responsibilities Explained for background. When you need alternate housing fast, Explore Houseme for nationwide rental listings.
FAQ
- What should I do first if the landlord loses the master key?
- Ask the landlord for details immediately, request written confirmation of planned security steps and document all communications.
- Can a landlord enter my unit without my permission if the master key is lost?
- No. Landlords must follow the rules about notice and entry in the Residential Tenancies Act and cannot enter without proper notice except in limited emergencies.
- How do I ask the Landlord and Tenant Board for help?
- If the landlord wont act, file the appropriate application with the LTB asking for an order to require repairs, lock changes or compensation; check the LTB forms page first.
How-To
- Document the incident: save all texts, emails and notes with dates and times.
- Send a clear written request to your landlord asking for rekeying or lock replacement and set a reasonable deadline.
- Secure your unit while waiting: use secondary locks you are permitted to install or notify building security.
- If the landlord delays, get quotes and receipts if you must arrange a lock change and keep all invoices.
- If the landlord still does not act, file an application with the Landlord and Tenant Board asking for an order and possible compensation.
Key Takeaways
- Tenants have rights to privacy and to request lock changes when a master key is lost.
- Document all communications and set reasonable deadlines for landlord action.
- If necessary, use the Landlord and Tenant Board to seek orders or compensation.
Help and Support / Resources
- Contact the Landlord and Tenant Board
- LTB forms and applications
- Residential Tenancies Act, 2006 (legislation)
