Subletting, Roommates & Guarantors in Ontario — RTA Guide

Understanding your rights and obligations under the Residential Tenancies Act (RTA) regarding subletting, roommate arrangements, and guarantors is essential for both landlords and tenants in Ontario.

Subletting in Ontario

Under the RTA, a tenant may sublet their rental unit but requires the landlord's consent. A landlord cannot arbitrarily refuse a sublet. If a landlord withholds consent unreasonably, the tenant may apply to the LTB.

Subletting vs Assignment

A sublet is temporary — the original tenant retains their tenancy and returns at the end of the sublet period. An assignment transfers the full tenancy to another person permanently.

Roommate Arrangements

A tenant may share their unit with another occupant without requiring landlord approval, provided the unit is not overcrowded. The original tenant remains responsible for rent payments.

Guarantors on a Lease

A guarantor co-signs a lease and accepts legal liability for rent arrears and damages if the tenant defaults. Guarantors should understand their financial obligations before signing.