
Key takeaways
- Use this glossary alongside your lease and any notice.
- Terms updated for the 2026 rule changes.
- If a notice uses a term you don’t understand, get help before the deadline.
Renting a home in Ontario comes with its own set of legal terms and industry-specific language. Whether you’re reviewing a lease, speaking with a landlord, or filing an application with the Landlord and Tenant Board, it’s essential to understand the vocabulary being used. This glossary provides plain-language definitions of the most commonly used terms in Ontario’s rental system.
Accessibility modifications: Changes to help tenants with disabilities. Landlords must accommodate up to the point of undue hardship.
Arrears: Rent that is overdue.
Assignment: A permanent transfer of the tenancy to another person, with landlord consent.
Bad faith: Giving a notice without a genuine reason. A T5 application can address it.
Co-signer or guarantor: Someone who agrees to be responsible if the tenant doesn’t pay.
Common areas: Shared spaces, such as lobbies and laundry rooms. Landlords maintain these.
Deposit: In Ontario, a rent deposit of up to one month’s rent, plus a refundable key deposit. Damage deposits are not permitted.
Essential or vital services: Heat, hydro, fuel, and hot and cold water. Landlords cannot withhold them.
Eviction: Ending a tenancy by a Board order, enforced by the Sheriff.
Fixed-term lease: A lease for a set time, usually 12 months. It normally continues month to month afterward.
Human Rights Code: Ontario law that bans discrimination in housing on protected grounds.
Human Rights Tribunal of Ontario: The tribunal that hears discrimination applications.
Illegal unit: A unit that does not meet zoning or safety rules. Tenants still have rights.
Inspection: A record of a unit’s condition at the start or end of a tenancy.
Landlord: The owner or person who rents out the unit.
Landlord and Tenant Board (LTB): The provincial tribunal for rental disputes.
Last month’s rent: A deposit applied to the final month. It cannot be used for damage.
Lease: The rental agreement. Most private leases must use the standard lease.
Mediation: A voluntary way to reach an agreement with Board help.
Month-to-month tenancy: A tenancy with no fixed end date, usually needing 60 days’ notice from the tenant.
N4: A landlord’s notice for unpaid rent, at least 7 days.
N9: A tenant’s notice to end the tenancy.
N11: An agreement to end the tenancy. Be careful before signing.
N12: A notice that the landlord, family or a buyer needs the unit.
N13: A notice for demolition, major repairs or conversion.
Normal wear and tear: Expected aging of a unit. Tenants don’t pay for it.
Occupancy date: The day you can move in.
Quiet enjoyment: Your right to use your home without unreasonable interference.
Rent control: Limits on rent increases under the annual guideline. Most units first occupied after November 15, 2018 are exempt.
Rent receipt: Proof of payment. A landlord must provide one free if you ask.
Right of first refusal: A tenant’s right to return after renovations, if they gave written notice.
Security of tenure: Your right to stay unless a tenancy legally ends.
Sheriff: The officer who enforces Board eviction orders.
Standard lease: Ontario’s required lease for most private tenancies.
Sublet: A temporary arrangement where someone else lives in the unit and the tenant remains responsible.
T1, T2, T5, T6: Common tenant applications. See Chapter 14.
Tenant insurance: Insurance for belongings and liability. A lease can require liability coverage.
Utilities: Hydro, gas, water and similar services. The lease should say who pays.
Visual guide · Rentals
Notices at a glance
| Form | From | About |
|---|---|---|
| N1 | Landlord | Rent increase |
| N4 | Landlord | Unpaid rent |
| N9 | Tenant | Ending tenancy |
| N11 | Both | Agreement to end |
| N12 | Landlord | Own or family use, or buyer |
| N13 | Landlord | Renovation, demolition |
Words that are easy to mix up
Who decides what?
-
LandlordServes a notice
-
TenantResponds or files
-
LTBHears and orders
-
SheriffEnforces eviction
Two words people mix up
VS
