Immediate Transfer of Ownership in Sale with Deferred Payment

The dispute centered on whether a contract for the sale of an apartment building, where the buyer agreed to take possession immediately but payment was deferred, constituted a sale that transferred ownership upon the exchange of consent, despite the future maturity of the payment obligation. The court affirmed the lower court's decision, reasoning that the contract was a definitive sale under which the transfer of ownership occurred immediately upon the agreement of the parties concerning the thing and the price, in accordance with the relevant civil code provisions, even though the payment of the price was postponed.