Commercial landlords and tenants in Ontario may face disputes over lease terms, rent, repairs, operating expenses, and termination. These conflicts can disrupt business operations and put rental income or a commercial investment at risk.
Understanding the lease and the applicable legal framework is the starting point for assessing your rights and choosing a practical response.
Key takeaway: Commercial lease disputes follow a different legal framework from residential tenancy disputes. The lease terms, the facts, and applicable law determine the options available to each party.
Residential and Commercial Tenancies: Different Frameworks
Residential tenancies in Ontario generally fall under the Residential Tenancies Act, and many disputes are heard by the Landlord and Tenant Board. Commercial tenancies generally involve the Commercial Tenancies Act, the lease agreement, and applicable common law principles.
Commercial lease conflicts may be addressed through negotiation, mediation, or court proceedings. Do not assume that the procedures or protections available in a residential tenancy apply to a commercial lease.
Common Commercial Lease Disputes
Disagreements between commercial landlords and tenants often concern:
- Unpaid rent, rent adjustments, and disputed charges.
- Taxes, maintenance, insurance (TMI), and common area maintenance (CAM) expenses.
- Repairs, maintenance obligations, and alterations to the premises.
- Permitted use, access, and interference with business operations.
- Renewal options, assignment, subletting, and lease termination.
- Default notices, lockouts, and demands to vacate.
The precise wording of the lease matters. Review it alongside notices, payment records, and correspondence before deciding how to respond.
Protecting Commercial Tenants
An eviction notice, lockout, or interruption of services can have immediate consequences for a business. Tenants may need advice about whether the landlord has complied with the lease and applicable legal requirements.
Depending on the circumstances, counsel may assess whether negotiation, a claim for damages, an injunction, or relief from forfeiture is available. Court relief is not automatic, and prompt advice can help you understand your options.
Enforcing Commercial Landlord Rights
Landlords may need to address rent arrears, property damage, unauthorized use, or other lease breaches. The choice of remedy requires careful consideration of the lease, notices, applicable law, and potential consequences.
- Assessing default and termination rights.
- Seeking possession through an appropriate legal process where necessary.
- Pursuing unpaid rent or damages where supported by the facts and law.
- Responding to tenant claims and requests for court relief.
Choosing a Practical Dispute Resolution Strategy
A commercial lease review may involve the agreement, amendments, notices, rent records, invoices, and correspondence. These documents help identify the disputed obligations and assess the strengths and risks of each party’s position.
Negotiation or mediation may provide a practical resolution. Where court proceedings are necessary, the available remedies depend on the facts and applicable law; no particular outcome is guaranteed.
Learn more about our business, corporate and commercial litigation services.
Discuss Your Commercial Lease Dispute
Hashmi Law Group has 17+ years of legal experience and assists clients in North York, Mississauga, the GTA, and across Ontario. Arrange a consultation to discuss your commercial landlord or tenant dispute.
Legal disclaimer: The information provided in this article is for educational purposes only and is not legal advice. Seek independent legal counsel for advice tailored to your circumstances before taking legal steps.






