The $8.4M Mansion the Court Unwound: Latent Defect Isn't Just Physical

1000425140 Ontario Inc. v. 1000176653 Ontario Inc. (2023 ONSC 6688, upheld 2024 ONCA 610) and what it changes for listing agents, sellers, and anyone who assumes non-physical issues don't have to be disclosed.

By the Deeded Editorial Team. Last updated April 20, 2026.

TL;DR

• NBA star Shai Gilgeous-Alexander and his partner bought a Burlington mansion for around $8.4 million. They closed on May 10, 2023.
• Four days later, a stranger knocked on the door looking for the previous tenant, Aiden Pleterski, Ontario's infamous "Crypto King," who'd allegedly defrauded investors of more than $40 million.
• The sellers knew about the safety risk before closing. They didn't disclose it. The Ontario Superior Court ordered rescission of the sale. The Court of Appeal upheld the decision in 2024.
• The case pushes the meaning of "latent defect" past physical issues into ongoing safety risks tied to a property's history.

The story

May 2023. An NBA star and his partner closed on an 8.4 million dollar mansion in Burlington. They were planning to start a family there. On paper, a dream home.

Four days later, a stranger showed up at the door asking about the previous tenant.

That tenant was Aiden Pleterski, better known as Ontario's "Crypto King." Pleterski had been running a cryptocurrency and forex "investment" business out of the property, leasing it for about $45,000 a month. His scheme collapsed in 2022. More than 160 investors lost a combined $40 million and change. Pleterski spent the money on private jets, luxury cars, and holidays. He was eventually charged with fraud. He was also kidnapped and held for ransom by angry investors.

After the couple moved in, more visitors came. Some wanted their money back. Some made threats. There were attempts to access the property. Police warned the couple about the ongoing risk. Twelve days after closing, they moved out.

The couple sued. They argued the sellers knew the property carried an ongoing safety risk from Pleterski's creditors and did not disclose it. They asked the court to rescind the deal and refund the purchase price.

What the court found

Justice Robert Centa agreed. In October 2023, he ordered rescission of the agreement of purchase and sale.

Two findings mattered.

Fraudulent misrepresentation. The sellers had told buyers the property was "private and secure." The court found they knew it wasn't. They'd had strangers, police visits, and security incidents tied to Pleterski before the sale closed. Their silence on all of that, combined with the "private and secure" framing, amounted to fraud.

Undisclosed latent defect. Here's where the case breaks new ground. A latent defect usually means something physical, a crack in a foundation, water behind drywall, mould under a basement slab. This court said no, it can be broader. A property with an ongoing, foreseeable safety risk attached to it has a latent defect. The risk in this case wasn't the building. It was who kept showing up at the building.

The Court of Appeal affirmed in August 2024.

The remedy was rescission plus equitable damages to put the couple back in the position they were in before closing: mortgage payments, property taxes, utilities, insurance, and repair costs. Over $75,000 in mortgage payments alone were documented during the rescission dispute period.

Why this matters beyond a famous buyer

The celebrity angle is what made this case a headline. The law it produced is what should make every listing agent pay attention.

Most sellers and agents operate on a simple assumption about latent defect disclosure: if it isn't physical, you don't have to mention it. This case tears that up. The question now isn't just "is there a hidden crack in the wall." It's "is there anything about this property, its history, its occupants, or its context, that a reasonable buyer would consider material to the decision, and that a buyer can't reasonably discover on their own."

That's a much bigger list.

Think about what it can cover. A property with a history of break-ins linked to a specific neighbour. A rental property where a tenant had been involved in criminal activity the community still remembers. A home where a violent crime occurred. A property flagged in ongoing civil litigation that might trigger claims against the title. None of those are physical. All of them can meaningfully affect a buyer's safety or enjoyment. Post-Gilgeous-Alexander, the silence that used to feel like a safe choice now carries real legal risk.

Four things agents should take from this

Silence isn't always "caveat emptor." The old rule (buyer beware) still applies to many issues a buyer could uncover with reasonable diligence. But when something is genuinely hidden, material to safety, and known to the seller, silence can now qualify as fraud. That's a line sellers and their agents need to respect.

"Private and secure" is a representation, not marketing copy. Every listing description is reviewed by a lawyer the moment something goes sideways. The Gupta entity's "private and secure" framing was the hinge of the fraud finding. If your listing language states anything about safety, security, tenancy history, or neighbourhood character, make sure it's true. If you don't know it's true, don't say it.

The SPIS isn't the ceiling of disclosure. A Seller Property Information Statement covers the basics. It doesn't ask every question that might matter. When a seller tells you something material that isn't on the form, your file should reflect that the buyer knew. An email, a cover note, a disclosure rider. The Gilgeous-Alexander sellers didn't have that. Their silence was the evidence used against them.

Rescission is back on the table. For years, rescission was treated as a remedy almost never granted in real estate. Too much downstream disruption, too many reliance interests. This case signals the Ontario courts are willing to order it again where fraud or concealed material defect is clear. Agents advising either buyer or seller on a disclosure fight should factor that in. The range of outcomes isn't just damages anymore.

The client conversations you should be having

With sellers listing a property with a complicated history. Ask them directly. Any police visits, threats, contested tenancy, stalker, neighbour dispute, criminal incidents on the property, civil lawsuits affecting the title? If yes, you need a lawyer in the conversation before the listing goes live. Not after.

With buyers in the due diligence window. Buyers can now ask sharper questions. Has this property had a tenant in the last three years with any legal trouble? Any incidents of trespass or security concerns? Any reason to believe strangers might visit looking for a previous occupant? These used to feel awkward. They don't anymore.

With listing agents thinking about the SPIS. The SPIS is a floor, not a ceiling. Counsel is starting to recommend tailored disclosure addenda for properties with any unusual history. If you're listing a home where "the seller knows things that should matter," push for more, not less.

Deeded's overview of what happens to a deposit if the deal falls through covers the money side of broken deals. Our agreement of purchase and sale explainer is a good one to send to clients who want to understand what they're actually agreeing to.

Latent defect law used to be mostly about physical structure. This case says: not anymore. Use it.

Frequently asked questions

What is a latent defect in Ontario real estate?

A latent defect is a problem a buyer can't reasonably discover on inspection, and that the seller either knew about or should have known about. Historically it was mostly physical (foundation issues, mould, water damage behind finishes). The Gilgeous-Alexander decision extended the concept to ongoing non-physical risks, such as safety hazards from a property's history.

When must a seller disclose something that isn't physical?

If the seller knows about a material issue a buyer couldn't reasonably find out, and the issue affects safety or the property's habitability, the seller has a duty to disclose. Silence, especially when paired with affirmative marketing language, can amount to fraudulent misrepresentation.

What is rescission, and when is it available?

Rescission unwinds a deal. The court puts the parties back where they were before the contract. It's available for fraudulent misrepresentation, certain failures to disclose, and some cases of mutual mistake. Courts don't grant it lightly. The Gilgeous-Alexander decision is one of the rare recent cases where rescission of a closed real estate deal was actually ordered.

Does the buyer get the purchase price back if rescission is granted?

Yes, plus equitable damages to cover mortgage payments, taxes, utilities, insurance, maintenance, and related losses incurred while the dispute plays out. The property returns to the seller.

Can a listing agent be liable for failing to disclose a material issue?

Potentially. If the agent knew about a material issue and was part of the misrepresentation, or didn't take reasonable steps to ensure the listing was accurate, they can face a professional complaint, a civil claim, or both. Counsel on these files almost always recommends documentation of what the agent knew, when they knew it, and what they did with that information.

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Primary sources: 1000425140 Ontario Inc. v. 1000176653 Ontario Inc., 2023 ONSC 6688 (motion) and 2024 ONCA 610 (appeal). This article is general information, not legal advice. For advice on a specific transaction or disclosure question, talk to a licensed Ontario real estate lawyer.

Last updated April 20, 2026.

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