Lesion Beyond Moiety: Louisiana's Unique Real Estate Rescission Doctrine

What Is Lesion Beyond Moiety?

Lesion beyond moiety (also called "lésion" or "lesion outre la moitié") is a cause of action under Louisiana Civil Code Article 2589 that allows a seller of immovable (real) property to seek rescission of a completed sale — or an increase in the price to the fair market value — if the seller received a price that was less than half the property's fair market value at the time of the sale.

This doctrine is unique to Louisiana among the U.S. states, reflecting Louisiana's civil law heritage. It is derived from Roman law through French and Spanish legal traditions and represents a protection for sellers who sold property at a grossly inadequate price — whether because of financial distress, fraud, misrepresentation, or simple misunderstanding of the property's value.

Who Can Bring a Lesion Claim?

Critically, lesion beyond moiety is available only to sellers of immovable property — not to buyers. A buyer who paid too much for a property cannot seek rescission based on lesion. The doctrine exists to protect sellers who received too little.

The claim must be brought within two years of the date of the sale (La. C.C. Art. 2595). After two years, the claim is prescribed and cannot be brought.

The Standard: Less Than Half the Fair Market Value

For a lesion claim to succeed, the seller must prove that the sale price was less than half the property's fair market value at the time of the sale. A sale at 60% of market value does not give rise to a lesion claim — the price must be below 50% of fair market value. This is a high threshold that limits the doctrine to genuinely distressed or exploitative transactions.

Determining fair market value as of the date of sale requires competent evidence — typically an independent appraisal by a qualified real estate appraiser. The appraisal must establish what a willing buyer would have paid a willing seller in an arm's length transaction as of the transaction date.

The Buyer's Options

If a court finds that the price was less than half the fair market value, the buyer has two options:

• Pay the supplement to the fair market value: The buyer can choose to keep the property by paying the difference between the sale price and the property's fair market value (minus one-tenth, under the Civil Code).
• Return the property: Alternatively, the buyer can return the property and receive a refund of the purchase price.

Practical Implications for Buyers

The existence of the lesion doctrine has important implications for buyers of Louisiana real estate:

• Buyers should always obtain an independent appraisal before closing, to establish that they are paying a fair price and to protect against a future lesion claim.
• Buyers acquiring distressed properties — foreclosure sales, estate sales, or off-market transactions at significant discounts — face heightened lesion risk and should carefully document the basis for the purchase price.
• The two-year prescriptive period means that lesion claims can arise years after a transaction closes, during which time the buyer may have made significant improvements to the property.

Exceptions and Limitations

Several exceptions limit the application of lesion beyond moiety:

• Lesion does not apply to sales made through public auction (including tax sales and judicial sales)
• Lesion does not apply to compromises (settlements of disputed claims)
• Lesion does not apply to sales between merchants when both parties are engaged in commerce
• A seller who waives lesion in the act of sale — with full knowledge of the property's value — may be bound by the waiver