Enforceability of Unnotarized Promise to Sell Real Estate

A plaintiff sued to enforce a promise to sell a property, arguing that a formal agreement confirming the sale, despite not being notarized as required for a definitive property transfer, constituted a valid preliminary contract because the parties had agreed on the essential terms, including the price and the object of the sale. The court rejected the appeal, holding that a promise to sell real estate, even if containing all the necessary conditions for a final sale, must be executed before a notary to be enforceable against a third party or to compel the seller to convey title, as this formality is required for the validity of the transfer itself under the relevant property law provisions.