When a Landlord Insists on a New Lease Instead of an Assignment in Ontario

You’ve negotiated a deal to buy a business, and the location’s lease is part of what makes it worth buying. Then the landlord says no to a straightforward assignment — instead, they want the buyer to sign a brand-new lease. It’s a more common outcome than most buyers expect, and it can quietly change the economics of the deal.

This article explains why landlords sometimes prefer a new lease over an assignment, how that’s different legally, and what a buyer should watch for if it happens to you.

Why a Landlord Might Prefer a New Lease Over an Assignment

An assignment lets the buyer step into the seller’s existing lease, on the seller’s existing terms — including whatever rent, term length, and renewal options the seller negotiated, sometimes years earlier. From the landlord’s point of view, that can be a missed opportunity: if market rents have risen, or the landlord wants updated clauses, more current insurance requirements, or a stronger financial commitment from a new tenant, an assignment locks the landlord into the old deal.

Many commercial leases anticipate this by giving the landlord an alternative option when an assignment is requested — instead of simply consenting, the landlord can offer the proposed buyer a new lease directly (often on updated terms), or in some cases terminate the existing lease and re-let the space. Whether a particular landlord has this option depends entirely on the wording of the existing lease.

The Legal Difference Between Assigning and Re-Leasing

Under the Commercial Tenancies Act, where a lease contains a covenant against assignment without the landlord’s consent, that consent generally cannot be unreasonably withheld — unless the lease itself provides otherwise. That “unless the lease says otherwise” carve-out is important here: if the existing lease gives the landlord an express right to require a new lease instead of an assignment, the landlord isn’t necessarily acting unreasonably by insisting on one.

An assignment is a transfer of the seller’s existing leasehold interest to the buyer. A new lease is an entirely fresh contract between the landlord and the buyer, replacing the old one. They can look similar in practice — same space, same buyer moving in — but they are legally distinct documents with potentially very different terms.

What Changes for the Buyer

If the landlord requires a new lease rather than an assignment, the buyer should expect some or all of the following to be back on the table:

• Rent — likely reset to current market rates rather than the seller’s existing (possibly lower) rent
• Term length and renewal options — the buyer may lose the benefit of renewal options the seller had already banked, or be offered a shorter or longer initial term
• Security requirements — a fresh deposit, letter of credit, or personal guarantee, evaluated against the buyer’s own financial profile rather than the seller’s history
• Lease clauses generally — updated permitted-use language, maintenance obligations, or other terms the landlord has modernized since the original lease was signed

Any of these can materially change the value of the location to the buyer, which is exactly why this needs to be resolved before the purchase price is finalized, not after.

Negotiating Leverage When a New Lease Is Required

A buyer isn’t without leverage just because the landlord holds the cards on lease terms. Useful angles include:

1. Asking the landlord for a term and renewal structure that at least approximates what the seller had, if the landlord’s stated reason is business-related rather than purely rent-driven
2. Getting the proposed new lease terms in writing early, so they can be factored into the purchase price and financing before the buyer is committed
3. Making the purchase agreement conditional on the buyer and landlord actually reaching acceptable new lease terms, not just on “landlord approval” in the abstract
4. Involving a lawyer experienced in commercial leasing to identify which new terms are standard market practice and which are landlord overreach

Building This Into the Purchase Price and Timeline

If a new lease turns out to be materially worse for the buyer than the seller’s existing lease — higher rent, shorter term, lost renewal rights — that’s a legitimate factor in renegotiating the purchase price, not something the buyer should simply absorb. It’s also a reason to raise the lease question with the landlord as early as possible in the deal, since new lease negotiations can take meaningfully longer than a straightforward assignment consent and can affect the closing date.

Frequently asked questions