The commercial lease is at the heart of the relationship between landlords and tenants of commercial spaces in Quebec. In 2026, real estate pressure in Montreal, combined with the persistent economic consequences of recent years, is fueling a growing volume of litigation between commercial owners and operators. Early termination, default, disputed renewal clauses — the sources of conflict are multiplying, and the financial stakes are often high. Hiring an experienced commercial lease civil litigation lawyer has become essential to navigating these complex disputes.

Explosion of investments and increased complexity of residential projects

The legal framework of commercial leases in Quebec

Unlike a residential lease, a commercial lease is not protected by the provisions of the Act respecting the Tribunal administratif du logement. It is mainly governed by the general provisions of the Civil Code of Québec on leasing (articles 1851 et seq.) and by the terms negotiated between the parties. This contractual freedom means that the obligations of each party depend largely on what is stipulated in the lease — hence the paramount importance of rigorous drafting.

Several elements are frequently a source of dispute: renewal clauses, repair and maintenance obligations, exclusivity clauses, terms of assignment or subletting, and termination conditions. Each clause must be interpreted in light of the Civil Code and the case law applicable to civil and commercial litigation.

The most common commercial lease disputes in Montreal

Failure to pay rent remains the most common cause of dispute. The landlord has specific remedies, including terminating the lease and claiming unpaid rent and damages. However, the courts usually require that the landlord have put the tenant on notice before terminating, and the tenant can sometimes get a grace period.

Disputes relating to the inventory of fixtures are also frequent. The obligation to maintain and repair is often at the centre of the dispute: the tenant criticises the landlord for not keeping the building in good condition, while the landlord invokes the tenant’s routine maintenance obligations. The distribution of these obligations depends on the terms of the lease, which often provide for so-called “triple net” clauses that shift most of the charges to the tenant.

Renewal disputes arise when the parties do not agree on the terms of the new lease. In the absence of an automatic renewal clause, the commercial tenant does not have the right to remain in the premises — a major difference with the residential regime.

Risk factors specific to the Montréal context

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Early termination and its consequences

Early termination of a commercial lease can result in claims of several hundred thousand dollars. The landlord can claim all remaining rent until the end of the lease, relocation costs, loss of ancillary income and the costs of restoring the premises. The tenant, for his part, can invoke the landlord's breach of its essential obligations to justify the termination.

Mediation and arbitration are often effective alternatives to litigation in these situations. A negotiated settlement allows the parties to control the outcome of the dispute and avoid the delays and costs of a full trial.

Protecting your interests from the drafting of the lease

The best strategy to avoid a commercial lease dispute is to negotiate and draft a comprehensive and balanced lease from the start. The essential clauses to check include the duration and conditions of renewal, the distribution of operating expenses, the terms of assignment and sublease, territorial exclusivity clauses, termination conditions and applicable penalties.

A commercial litigation attorney can identify areas of risk in an existing lease and propose changes before those risks materialize into costly litigation.

Our commercial lease services

Compagnie abg conseils juridiques assists landlords and commercial tenants in the prevention and resolution of their disputes.

  • Civil and commercial litigation: representation before the courts in the event of non-payment, termination of lease or breach of contract.
  • Mediation and Arbitration: Expedited resolution of landlord-tenant disputes without recourse to court.
  • Commercial litigation: protection of contractual rights and financial interests in complex leases.

Summary Table — Commercial Lease Disputes in Quebec

Type of disputeFrequencyFinancial stakeMain action
Rent DefaultVery HighMedium to HighFormal notice, termination, complaint
Inventory and repairsHighAverageActual performance, damage
Contested renewalMediumHighNegotiation, mediation
Early terminationMediumVery highClaim for remaining rents, damages
Assignment or sublease refusedLow to mediumVariableCourt application for authorization
Guarantees: useful but often insufficient protection

Our commercial lease services

Compagnie abg conseils juridiques assists landlords and commercial tenants in the prevention and resolution of their disputes.

Why the intervention of a lawyer is strategic

A residential construction case rarely involves a single legal issue. It often involves both a contract for work, the legal guarantee of quality, a guarantee plan such as the RCM, insurance and municipal rules. Identifying the right legal basis, the right defendant, and the right time to act is essential.

The civil lawyer intervenes at several levels: analysis and securing of the contract before signing, supervision of formal notices during the construction site, negotiation of corrective measures, and, when necessary, preparation of a legal recourse. In some cases, The use of mediation allows the conflict to be resolved more quickly than a trial, provided that the strategy is solidly prepared.

Frequently asked questions about commercial lease disputes in Montreal

Is a commercial tenant entitled to the renewal of his lease?

No, unlike a residential lease, the commercial tenant does not have an automatic right to renewal. This right only exists if it is expressly provided for in the lease. In the absence of such a clause, the landlord may refuse to renew the term at the end of the term.

Can the landlord terminate the lease for non-payment without notice?

The landlord must generally give the tenant formal notice before terminating, unless the lease provides for an express termination clause exempting the tenant from this formality. Even with such a clause, the courts can grant a grace period to the tenant in certain circumstances.

What are the tenant’s recourses if the landlord does not comply with its maintenance obligations?

The tenant can request a reduction in rent, the execution in kind of repairs or, in serious cases, the termination of the lease. The qualification of the obligations of each party depends on the terms of the lease, which may have transferred most of the expenses to the tenant.

Is mediation mandatory before going to court?

Mediation is not mandatory in commercial leases, but it is strongly encouraged by the courts and is often the quickest and least expensive way to resolve a dispute. The case management protocol provides for an out-of-court settlement conference in most cases.

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Compagnie abg conseils juridiques accompanies you in all your legal issues. Contact us for a consultation.