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Misrepresentation, Mistake, and Void Contracts
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A non-profit organization providing employment training services to adults with barriers to work signed a 5-year commercial lease for a former industrial building in a mid-sized Canadian city. The organization had operated for 8 years out of a smaller facility but needed expanded space to accommodate a new vocational program funded by a provincial grant. The executive director identified the property through a commercial real estate listing that described it as "move-in ready for educational or light industrial use" with "all systems updated and code-compliant."

During negotiations, the landlord provided documentation indicating that the building's electrical system had been upgraded 3 years earlier to support manufacturing equipment previously operated by the prior tenant. The landlord also represented that the property had passed a recent municipal inspection and that the loading dock was fully operational for receiving donated materials and equipment. Based on these representations, the non-profit's board approved the lease, which required a $45,000 deposit and monthly rent of $8,500. The organization invested an additional $62,000 in leasehold improvements before occupying the space.

Within 2 months of taking possession, the non-profit discovered that the electrical system could not safely support the industrial sewing machines and woodworking equipment central to its vocational training program. An independent electrical assessment revealed that the upgrade referenced by the landlord had addressed only a portion of the building's wiring and that significant work remained incomplete. The municipal inspection referenced in the landlord's materials had been conducted for a different purpose and did not certify the building for educational occupancy. The loading dock, while physically present, had been decommissioned due to structural concerns and could not bear the weight of standard delivery vehicles.

The non-profit also learned that both parties had proceeded under the assumption that the building was zoned for educational use. In fact, the property sat in a zone that permitted light industrial activity but required a variance for any training or instructional programming. Neither party had verified the zoning before signing. The landlord had leased to a manufacturing tenant for the previous 12 years and had no reason to question the permitted uses; the non-profit had assumed that a building advertised for educational use would already carry the necessary designation.

Complicating matters, the lease had been negotiated during a period when the non-profit was under significant pressure to secure space before its grant funding lapsed. The provincial funder had set a deadline for demonstrating that the organization had secured a suitable training facility, and the executive director had communicated this urgency to the landlord during negotiations. The landlord had offered to expedite the lease process and waived certain standard conditions in exchange for the non-profit agreeing to an early signing date and forgoing an independent property inspection.

Mistake: When Both Parties Got It Wrong and What Happens Next

When two parties enter into a contract believing they share a common understanding, only to discover later that both were fundamentally mistaken about something central to their agreement, the law must grapple with a difficult question: should the contract stand despite the shared error, or should it be unwound as if it never existed? This is the domain of mistake in contract law, a doctrine that operates differently than misrepresentation because here, neither party has made a false statement to the other. Instead, both parties have proceeded under an incorrect assumption about a material fact, and the law must determine whether that shared error is significant enough to undermine the entire foundation of their agreement.

The doctrine of mistake exists because contract law recognizes that genuine consent requires more than signatures on paper. For a contract to be truly binding, the parties must have a meeting of minds regarding the essential elements of their bargain. When both parties are mistaken about something fundamental—the existence of the subject matter, its identity, or some quality so essential that the contract would never have been formed without it—the law may conclude that there was never a true agreement in the first place. This is not about one party deceiving the other or even about unfairness in the usual sense. It is about whether the basic prerequisites for a valid contract were ever present.

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