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Can a Landlord Block the Sale of Your Business in Ontario?

See how lease assignment clauses and landlord consent can affect the sale of your business in Ontario, and what to check and arrange before you sign.

Buying & Selling a Business4 min readTSLBy the Treadstone Law Team · OntarioUpdated November 6, 2026
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Key takeaways
  • Whether a landlord can block your sale depends first on what your lease says about assignment, subletting and change of control.
  • A lawyer should review how your lease wording applies to your situation before you rely on any assumption.
  • Lease consent is one piece of the deal; employees, GST/HST and non-competes also need to be lined up.

If your business operates from leased premises, the location may be a big part of what a buyer is paying for. A buyer who cannot take over the lease may walk away, or may want to cut the price.

This article explains in general terms how lease clauses and landlord consent affect a sale. The outcome depends on the exact wording of your lease and the facts, so the lease should be reviewed by a lawyer early.

Why the lease matters to the sale

In an asset sale, the buyer usually needs the right to occupy the premises, which means taking over your lease by assignment or signing a new one with the landlord. In a share sale the tenant company stays the same, but many leases treat a change in ownership of the tenant as if it were an assignment.

Either way, the starting point is the lease itself. Look for the clauses on assignment, subletting, change of control, landlord consent, and what happens to the original tenant's responsibility after an assignment.

Can the landlord refuse consent?

There is no single answer. Some leases say consent cannot be unreasonably withheld, some say nothing about the standard, and some give the landlord broad discretion. The exact wording of your lease and the facts of your situation matter a great deal here. How these pieces interact for your lease, and whether a refusal can be challenged, is a question for a lawyer who has read the lease.

In practice, landlords often ask about the buyer's finances, experience and intended use of the space. They may also ask for a guarantee, a deposit or a fee to cover their costs. Expect to supply information, and plan time for the landlord to respond.

What to check in your lease

Other pieces of the deal that run alongside

Landlord consent is usually a condition of closing, but other items need attention at the same time.

What to do next

Start with the lease before you agree on a price or a closing date, because a buyer's offer will often depend on it. Then:

Frequently asked questions

Does my landlord have to agree to the sale of my business?

It depends on your lease. If the lease requires consent to assignment, or treats a change of control as an assignment, the landlord's consent may be needed. A lawyer can read the clauses and tell you where you stand.

Can a landlord unreasonably withhold consent?

Some leases say consent cannot be unreasonably withheld, others do not say. Whether a refusal can be challenged depends on the lease wording and the facts, so get advice before you respond or sign anything.

Do I stay responsible for the lease after I assign it?

That depends on the lease and on what the landlord agrees in its consent. Check this before closing and get the answer in writing.

Does a share sale avoid the landlord's consent?

Not necessarily. Many leases treat a change of control as an assignment, so check the wording of your lease before assuming a share sale avoids consent.

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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