Change-of-Control Clauses in Commercial Leases: What Happens When a Tenant Company Is Sold

Change-of-Control Clauses in Commercial Leases: What Happens When a Tenant Company Is Sold

A change-of-control clause treats a sale of the tenant company itself, a takeover of its shares rather than a transfer of the lease, as if it were an assignment, which means it can trigger the same landlord consent requirement even though the tenant named on the lease never technically changes. If your business is a corporation and you're contemplating a share sale, a merger, or bringing in a new controlling investor, this clause is often the thing standing between a clean transaction and an unplanned conversation with your landlord.

This is a companion piece to our guide on assignment and subletting clauses, which covers the direct transfer of a lease from one tenant to another. Change of control is a different mechanism aimed at a different loophole: what happens when nobody transfers the lease at all, because the company that holds it simply gets new owners.

Why This Clause Exists

Most commercial leases give the landlord a consent right over any assignment or subletting. That right is meaningless if a tenant can get around it by simply selling the shares of the company that holds the lease instead of assigning the lease itself. The lease stays in the same corporate name, on paper nothing has moved, but the business actually operating out of the space, and the people financially responsible for the rent, can change entirely.

Landlords, particularly where the tenant is a numbered company, a single-purpose holding entity, or a shell corporation set up to hold the lease, don't want to allow indirectly what the tenant can't do directly without consent. A change-of-control clause closes that gap: it defines a change in control of the tenant (or of a parent or affiliate that stands behind the tenant) as an event requiring the landlord's consent, on the same terms as an assignment.

"Control" in these clauses is usually defined by reference to voting shares, typically a threshold like 50% or more of the votes needed to elect the board, though the exact percentage and how it's calculated (direct ownership only, or aggregated with related parties acting in concert) is one of the more heavily negotiated details in the clause itself.

How This Plays Out in an M&A Transaction

Whether a change-of-control clause is triggered depends heavily on how the deal is structured, and this is where tenants get caught off guard.

• Share purchase. A buyer acquires the shares of the tenant corporation directly; the corporate tenant on the lease doesn't change, but who controls it does. This is the classic change-of-control scenario, and if the lease has the clause, it almost always applies.
• Asset purchase. A buyer acquires the business's assets, and the lease is assigned to the buyer as one of them. This is a straightforward assignment governed by the assignment clause, not the change-of-control clause, though the practical result for the landlord, a new party now responsible for the space, is similar.
• Amalgamation or merger. Two corporations combine into one surviving entity. Depending on how the lease and the clause are drafted, this can be treated as a change of control, an assignment by operation of law, or neither, and that ambiguity should get resolved before closing rather than after.
• Internal reorganization. A company shifts ownership of the tenant entity between affiliates it already controls, often for tax purposes, with no real change in who runs the business. Whether this trips the clause depends entirely on whether the lease carves out affiliate transfers, one of the more common negotiation points below.

Change-of-control provisions are easy to overlook during deal due diligence precisely because the lease itself never changes hands, so they don't always land on the same checklist as an assignment clause would. Finding out after closing that a reorganization technically breached the lease is a worse position than negotiating around it beforehand.

What Typically Gets Negotiated

• The control threshold. Whether the trigger is a majority of voting shares, a lower threshold like 25% to 33%, or a broader "de facto control" standard that could catch board composition changes or contractual control arrangements even without a share transfer.
• Carve-outs for internal reorganizations. Tenants typically push for an exception allowing a change of control between the tenant and its existing parent, subsidiaries, or affiliates under common ownership, since these transactions carry no real change in who is financially responsible for the space.
• A carve-out for public companies. Where the tenant is, or becomes, a publicly traded company, share ownership changes constantly through normal market trading and can't realistically be tracked or consented to trade by trade. Tenants who anticipate a future public listing, or who already are public, should confirm the clause either excludes public trading entirely or sets a materially higher threshold tied to control rather than ordinary share turnover.
• Notice and reporting obligations. Some leases require the tenant to notify the landlord of a change of control after the fact, or to periodically confirm its ownership structure, rather than requiring advance consent. This is a meaningfully lighter obligation than a full consent right and worth pushing for if a flat prohibition isn't negotiable.
• What counts as "consent not unreasonably withheld." Where the underlying assignment clause carries a reasonableness standard, tenants should confirm the change-of-control clause is tied to the same standard rather than giving the landlord unrestricted discretion to withhold or condition consent.
• Landlord remedies on a breach. Some leases give the landlord a right to terminate the lease outright if an unapproved change of control occurs, rather than simply treating it as a default capable of being cured; this is a materially harsher outcome worth flagging during negotiation.

Common Mistakes

1. Treating the change-of-control clause as boilerplate because "the lease isn't being assigned." The whole point of the clause is that it applies precisely when the lease isn't being formally assigned. A share sale that never touches the lease document itself can still be a default if the lease has this clause and consent wasn't sought.

2. Missing it during M&A due diligence. Lease review during a corporate transaction often focuses on assignment and subletting language because that's the more familiar risk. A change-of-control clause buried further down in the same section, or in a separate definitions section tied to "Control" or "Transfer," gets missed more often than it should.

3. Assuming an internal reorganization is automatically exempt. Without an express carve-out for affiliate transfers, a purely internal restructuring, moving the tenant entity under a new holding company for tax purposes, for example, can technically trigger the same consent requirement as a sale to an unrelated third party.

4. Not confirming reporting obligations before signing. A landlord can only actually enforce a change-of-control clause if it knows a change happened. Some leases require tenants to deliver shareholder or ownership information annually or on request; ignoring that ongoing obligation, even where no change has occurred, can itself be treated as a separate default.

Frequently Asked Questions

Does a change-of-control clause apply if my company is privately held and I'm just bringing in a new minority investor? It depends entirely on the control threshold defined in your specific lease. A minority investment that doesn't cross the defined voting-share threshold, commonly majority control, typically won't trigger the clause, but a lower threshold or a broader "de facto control" definition could catch it. Read the actual defined term, not just the clause heading.

If my numbered company amalgamates with another company I also own, does that count as a change of control? It can, depending on how the lease defines both "control" and "transfer," and whether there's a carve-out for transactions between affiliates under common ownership. This is exactly the kind of transaction that should be checked against the lease language before it closes, not after.

Can a landlord refuse consent to a change of control for any reason at all? Only if the lease says so explicitly. Many change-of-control clauses are drafted to import the same "consent not unreasonably withheld" standard that applies to assignments, but this isn't automatic. Some leases give the landlord broader, unqualified discretion specifically for a change of control, which is a meaningfully worse position for the tenant and worth negotiating before signing.

What actually happens if a change of control occurs and nobody tells the landlord? Depending on the lease, it's typically treated as a default, which could expose the tenant to the landlord's default remedies, potentially including termination. In practice, landlords often have limited visibility into a private company's ownership changes unless the lease obligates the tenant to report them, but relying on a landlord simply not finding out is not a risk-management strategy.

Do public companies need to worry about this clause at all? Yes, if the lease doesn't specifically exclude normal trading in a publicly listed tenant's shares. Without a carve-out, a literal reading of a broad change-of-control clause could be triggered by ordinary market trading crossing the defined threshold, which is clearly not what either party intended. This is exactly why a public-company carve-out, or a "control" definition tied to something other than raw share percentage, should be confirmed before a company goes public or is acquired by one.

Next Step

A change-of-control clause is easy to miss because it lives in the same part of the lease as assignment and subletting language but gets triggered by a different kind of transaction entirely. See our guide on assignment and subletting clauses for the direct-transfer side of this picture, or reach out if you're planning a sale, merger, or reorganization and want your lease reviewed for this exposure before you sign anything.

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This guide reflects general Canadian commercial leasing practice as of September 2026; individual leases vary significantly in how "control" and "transfer" are defined. Confirm the specific language in your lease, and how it applies to a proposed transaction, with legal counsel before closing any corporate sale, merger, or reorganization involving a leased premises. This piece draws on general Canadian commercial leasing texts rather than confirmed Alberta-specific case law; no reported Alberta decision interpreting a change-of-control clause in a commercial lease was confirmed for this piece, and it should be checked before relying on any statement here as a description of Alberta law specifically.