Enforceability of Conditional Promise to Sell Real Property Upon Fulfillment of Condition Precedent

A party entered into a promise to sell real property via a notarized agreement, obligating them to sell to the promisee upon a specific event—the seller's acquisition of full ownership through partition—and the promisee subsequently exercised their option to purchase after the condition was met. The court upheld the sale, reasoning that the initial promise to sell, once the specified condition precedent (obtaining full ownership) was fulfilled, automatically conferred the right to demand execution of the definitive sale contract upon the option holder, thereby validating the transfer despite any subsequent unilateral attempt by the promisor to withdraw.