Expert answer

What happens to my lease if the landlord sells the building?

A commercial lease generally binds a new owner of the building the same way it bound the old one — the new landlord steps into the lease’s existing rights and obligations, and a tenant cannot usually be evicted simply because the property changed hands. If the building sells while you are also buying or selling the business, timing can complicate exactly who has authority to consent to your assignment, and when.

Reviewed

Two separate sale processes running close together, the tenant’s business sale and the landlord’s property sale, can genuinely collide, even though neither party controls the other’s timeline or even necessarily knows about it.

The lease itself usually survives the change

Real property law generally treats a lease as binding on successors in title, meaning a purchaser of the building takes it subject to the leases already in place, rent, term, and renewal rights included. A tenant is not normally left without a lease just because the landlord sold, though who you are now dealing with, and how responsive they are, can change considerably.

A new landlord may not know, or honour, informal arrangements

Side agreements, verbal understandings, or informal flexibility a tenant enjoyed with a longtime landlord do not necessarily carry over to a buyer of the building who has only the written lease to go by. Anything that genuinely matters should be documented and, ideally, confirmed in an estoppel certificate obtained before the landlord’s own sale closes, rather than relied on as an unwritten understanding.

Consent and estoppel requests can stall during a landlord transition

If your own lease assignment or renewal request lands during the window when the landlord’s property sale is closing, you may be asking the outgoing owner for something the incoming owner will actually have to honour, or asking a brand-new owner with no history with your tenancy at all. Either way, expect slower responses and build in extra time rather than assuming the usual pace.

Confirm who actually holds title before relying on anyone’s answer

A quick land registry search confirms the registered owner at any given moment, which matters if you are trying to get a signature, a consent, or an estoppel certificate and are not certain the person you are dealing with still has authority to give it.

Sources

This answer is checked against primary sources. Links were last confirmed on the dates shown.

  1. 01
    Canada Revenue AgencyGovernment
    Selling a business
    canada.ca·Checked Aug 14, 2026
  2. 02
    Treadstone LawLegal commentary
    Getting Landlord Consent to Assign a Commercial Lease in an Ontario Business Sale
    treadstonelaw.ca·Checked Aug 14, 2026
  3. 03
    Treadstone LawLegal commentary
    Getting a Landlord Estoppel Certificate When Selling a Business in Ontario
    treadstonelaw.ca·Checked Aug 14, 2026
  4. 04
    Treadstone LawLegal commentary
    Lease Red Flags to Watch For Before Buying a Business in Ontario
    treadstonelaw.ca·Checked Aug 14, 2026

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