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Can a Landlord Refuse to Assign the Lease When You Buy an Ontario Business?

Buying a business in Ontario? Learn when a landlord can refuse to assign the commercial lease, what the Commercial Tenancies Act says, and your options.

Buying & Selling a Business5 min readTSLBy the Treadstone Law Team · OntarioUpdated November 1, 2026
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Key takeaways
  • If a lease bars assignment or subletting without consent, the Commercial Tenancies Act reads in that the landlord cannot unreasonably withhold consent.
  • That protection does not apply where the lease contains an express provision to the contrary, so the assignment clause must be read before you commit.
  • If the landlord refuses or neglects to consent, the tenant, assignee or subtenant can apply to a Superior Court of Justice judge, and a permitted assignment counts as the landlord's consent.

When you buy the assets of a business, the location is often a big part of what you are paying for. Customers know the address, the fit-out is done, and moving would be costly. But the premises are almost always rented, and the lease belongs to the seller, not to you.

That raises a practical question: can the landlord simply say no to the lease being passed to you? In Ontario the answer is often "not without a good reason," but it depends on what the lease says and on the facts. This article explains the general rules so you know what to check and when to get advice.

Why the lease matters in an asset purchase

In an asset purchase, you buy selected items from the seller, such as equipment, inventory and goodwill. The lease belongs to the seller, so how it passes to you depends on the lease and on the deal you make. Many commercial leases contain a covenant against assigning, subletting or parting with possession without the landlord's consent, which is why the Commercial Tenancies Act matters here.

If the landlord will not cooperate, you could end up owning a business with nowhere to operate it. That is why the lease should be treated as a core part of the deal, not a detail to sort out after closing.

What the Commercial Tenancies Act says

Many leases contain a covenant against assigning, subletting or parting with possession without the landlord's consent. Under section 23(1) of the Commercial Tenancies Act, a lease with that kind of covenant is deemed to say that consent is not to be unreasonably withheld.

In plain words, the starting point is that the landlord cannot unreasonably withhold consent. Whether a particular refusal is reasonable depends on the facts, so it is worth confirming with a lawyer. The law does not say the landlord must always agree.

When the lease says otherwise

The protection in section 23(1) does not apply where the lease contains an express provision to the contrary. So a lease that clearly says the landlord may withhold consent in its sole discretion, or that otherwise spells out different terms, may not give you the benefit of the reasonableness rule.

This is why the assignment clause deserves close reading during due diligence. Wording that looks routine can change your options considerably. Look for:

Whether a particular lease clause is clear enough to displace the statutory rule is a question a lawyer can assess once they have read the full lease.

If the landlord refuses or does not respond

If the landlord refuses or neglects to consent to an assignment or sublease, the tenant, the assignee or the subtenant can apply to a judge of the Superior Court of Justice. The judge decides whether consent was unreasonably withheld. The judge can order the assignment permitted, and that permission then counts as the landlord's consent.

Notice that this includes the assignee, which is you as the buyer. You are not always dependent on the seller to bring the application.

Whether a refusal, or a condition the landlord imposes, is "unreasonable" depends on the facts and on how courts have applied the rule. There is no simple checklist that guarantees a result. A court application also takes time and cost, which is hard to fit into a closing timeline. For that reason, most buyers try to settle consent before they are committed to close.

SituationWhat generally applies
Lease bars assignment without consent, and says nothing moreConsent is deemed not to be unreasonably withheld
Lease expressly provides to the contraryThe section 23(1) protection does not apply
Landlord refuses or neglects to consentTenant, assignee or subtenant can apply to a Superior Court of Justice judge
Judge finds consent was unreasonably withheldThe judge can order the assignment permitted, which counts as consent

Practical steps before you sign

An ordinary business purchase agreement does not come with a general statutory cooling-off period, so the contract itself needs to protect you. Deposits, conditions and termination rights depend on what the agreement says. Building landlord consent into it is one of the most useful protections.

Frequently asked questions

Can a landlord refuse to let me take over a commercial lease in Ontario?

Where a lease requires consent to assign, the Commercial Tenancies Act deems it to say that consent cannot be unreasonably withheld. That does not mean the landlord must always agree. Whether a refusal is unreasonable depends on the facts.

What if my lease says the landlord can refuse for any reason?

The statutory protection does not apply where the lease contains an express provision to the contrary. The exact wording matters a great deal, so have a lawyer read the clause before you rely on any assumption.

Can I go to court if the landlord says no or ignores the request?

If the landlord refuses or neglects to consent, the tenant, the assignee or the subtenant can apply to a Superior Court of Justice judge. The judge decides whether consent was unreasonably withheld and can order the assignment permitted, which counts as the landlord's consent.

Should landlord consent be a condition of closing?

In most asset purchases where the premises matter, it is a sensible protection. It lets you walk away or renegotiate if the landlord does not agree, based on what your agreement says. A lawyer can help draft it so your deposit and timing are protected.

Sources

Links go to official government, court and regulator pages. The law changes — confirm you are reading the current version.

This article is general information, not legal advice. Reading it does not create a lawyer-client relationship. Ontario laws, tax rates, and government programs change, and how the law applies depends on your specific facts. For advice about your situation, speak with a licensed Ontario lawyer. Treadstone Law is licensed by the Law Society of Ontario — reach us at 1-844-900-1070 or start a file online.

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