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Assigning a Commercial Lease in Ontario: What Business Tenants Should Know

  • May 20, 2024
  • 3 min read

Businesses sometimes need to transfer their rights under a commercial lease to another party. This may occur when a business is sold, when a tenant relocates to a new premises, or when a company restructures its operations.



Commercial leases often include detailed provisions governing the assignment of the lease. These provisions determine whether a tenant can transfer the lease to another party and what approvals may be required from the landlord.


Before attempting to assign a commercial lease in Ontario, tenants should carefully review the lease agreement to understand the legal requirements and potential restrictions involved.


What Is a Lease Assignment?


A lease assignment occurs when a tenant transfers its rights and obligations under a commercial lease to a new tenant.


After the assignment takes place, the new tenant typically assumes responsibility for the lease obligations, including:


• payment of rent

• compliance with lease terms

• maintenance obligations


The original tenant may still retain certain responsibilities depending on the wording of the lease agreement.


Lease assignments are common when businesses are sold because the buyer may wish to continue operating from the same premises.


Landlord Consent Requirements


Most commercial leases require the tenant to obtain the landlord’s consent before assigning the lease.


The lease may specify that the landlord’s consent:


• must be obtained in writing

• cannot be unreasonably withheld

• may be subject to certain conditions


Landlords may request financial information or background details regarding the proposed new tenant before granting consent.


Understanding the landlord’s consent requirements is essential before proceeding with an assignment.


Conditions Imposed by Landlords


When a tenant requests consent to assign the lease, landlords sometimes impose conditions before approving the transfer.


These conditions may include:


• reviewing the financial qualifications of the new tenant

• requiring the original tenant to remain liable under the lease

• requiring the new tenant to sign an assignment agreement

• requesting legal documentation to formalize the transfer


Tenants should review these conditions carefully to understand how liability will be allocated after the assignment.


Ongoing Liability of the Original Tenant


In some commercial leases, the original tenant remains liable for the obligations of the lease even after the lease has been assigned.


This means that if the new tenant fails to meet the lease obligations, the landlord may still pursue the original tenant for unpaid rent or other damages.


The extent of this continuing liability depends on the terms of the lease and any assignment agreement negotiated with the landlord.


Tenants should ensure they understand their potential ongoing obligations before completing an assignment.


Assignment vs Subletting


Commercial leases often distinguish between assignment and subletting.


In an assignment, the new tenant assumes the lease directly from the landlord.


In a sublease, the original tenant remains the tenant under the lease but rents part or all of the premises to another party.


Each arrangement has different legal implications, and the lease will typically contain separate provisions governing assignment and subletting.


Tenants should carefully review these provisions before entering into either arrangement.


Documentation for Lease Assignments


When a commercial lease is assigned, several legal documents may be required to complete the transaction.


These may include:


• a formal assignment agreement

• landlord consent documentation

• amendments to the existing lease

• guarantees or indemnities from the new tenant


Ensuring that these documents are properly prepared can help prevent disputes and clarify the responsibilities of each party.


Why Legal Advice Matters for Lease Assignments


Assigning a commercial lease involves legal obligations that can affect both the original tenant and the incoming tenant.


Before assigning a lease, business owners may wish to obtain legal advice to ensure they understand:


• the landlord’s consent requirements

• potential ongoing liability under the lease

• the documentation required to complete the assignment


Carefully structuring the assignment can help protect the interests of the parties involved and ensure that the transfer complies with the lease agreement.


Speak With a Lawyer Before Assigning a Commercial Lease


Businesses considering assigning a commercial lease should carefully review the terms of the lease before proceeding.


If you are assigning a commercial lease or negotiating an assignment agreement in Ontario, you can Book a Consultation to discuss your situation and determine the appropriate next steps.


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