The Vendor’s Lien: The Unpaid Seller’s Claim That Can Survive a Commercial Closing

No one signs it, no one registers it, and your title search will never show it. Ontario equity gives an unpaid seller a claim against the property itself — here is where it bites, and where it breaks.

I am Arthur Zhao. Commercial deals rarely end with a single wire on closing day. Deferred balances, holdbacks, earn-outs, family-company shuffles — money keeps moving long after the transfer registers. Most buyers assume that once title changes hands, the seller is out of the picture. Equity disagrees. It quietly hands the unpaid seller a claim against the property itself — one that no title search will ever surface. This article walks through what that claim is, whom it can reach, whom it cannot, and what each side of the table should do about it.

A lien nobody signed: where it comes from

The vendor’s lien is old law doing modern work. In her Canadian survey The Equitable Lien: New Life in an Old Remedy?, Barbara Cotton traces the remedy to the English Courts of Chancery in the early 1800s and identifies the unpaid vendor’s lien as the textbook example of a lien that arises by operation of equity from the relationship of the parties — not from anything they drafted. Hand over title, receive less than the full price, and equity treats the land itself as security for the shortfall.

Critically, it is an interest in the property, not just a debt claim. The classic enforcement route is a court-ordered sale, with the seller paid out of the proceeds — a far stronger position than lining up as an unsecured creditor.

This is not a VTB mortgage

A vendor take-back mortgage is negotiated, documented, and registered: a charge on title that the whole world can see, ranking by order of registration. The vendor’s lien is its shadow twin — implied by law, signed by no one, invisible on the register.

That difference drives everything about enforceability. A registered charge is protected by the registration system itself. An unregistered equitable lien can only reach two kinds of people: those who knew, and those who did not pay value. Keep that test in mind; the rest of this article is really just that test applied to different fact patterns.

What the Land Titles register promises — and what it does not

Ontario land overwhelmingly sits in the Land Titles system, whose core bargain is that the register is the truth: under the Land Titles Act, R.S.O. 1990, c. L.5, s. 78(4), a registered instrument takes effect according to its nature and intent. Section 44(1) then carves out a closed list of interests that bind land without registration — municipal taxes, easements, leases with a remaining term under three years coupled with actual occupation, construction liens still within their registration window, and a handful of others. The vendor’s lien is not on that list. It gets no statutory free pass; it survives only as far as the notice-and-value rules of equity carry it.

Hosseini v. Salerno (Ont. S.C.J., 2010) shows exactly where that line falls. The seller registered a vendor’s lien days after closing, claiming an unpaid balance. The court held that a mortgage registered at closing — advanced by a lender who paid value and knew nothing of the price dispute — ranked ahead of it, and noted that a seller who wants the lien to outrank later mortgages must expressly reserve it in the transfer.

The deal structures where it actually bites

One condition creates the lien: unpaid purchase money. Any structure that leaves price outstanding after registration is carrying it, whether or not anyone noticed at the closing table.

The unpaid seller’s playbook: get it on the record

If you are the seller left waiting for money, do not lean on the implied lien — it loses to third parties too easily. Escalate in this order: first, negotiate registered security up front — a VTB charge or third-party guarantee beats an equity argument every time; second, if you rely on the lien, follow the direction in Hosseini and reserve it expressly in the transfer; third, use the statute — s. 71(1) of the Land Titles Act lets the holder of an unregistered interest protect it by entering notices or cautions, and s. 128(1) lets a person claiming an interest register a caution so no dealing proceeds without their consent; fourth, sue in time — under the Real Property Limitations Act s. 23(1), an action to recover money charged on land must be brought within ten years of the right to receive it arising.

The buyer’s defence: paper what the search cannot show

You cannot search your way out of an unregistered interest, so the protection lives in the closing documents:

• Payment acknowledgment — have the seller confirm in writing on closing that the purchase price is paid in full and that no lien or interest in the property is reserved;
• Read the transfer — confirm it contains no reservation of a vendor’s lien; under Hosseini, reservation in the transfer is what gives the lien teeth against later interests, so its absence is precisely what you want locked in;
• Express waiver where price is deferred — if the deal genuinely has a deferred balance or earn-out, put the security on the table as a registered VTB charge or an escrow, and have the contract state that the seller waives any implied vendor’s lien. An implied equitable right can be excluded by express terms — trade the ghost for an instrument everyone can see;
• Check the parcel description — on parcels converted from the old Registry system, an unresolved lien from a historic deed can appear as “S/T Vendors Lien in #” in the PIN description (Government of Ontario, land registration Bulletin 2008-05). If it is there, require deletion before closing — the bulletin accepts evidence that the lien was paid off or that its limitation period has expired.