Uniwide Sales Realty v. Titan-Ikeda Construction

Summary

This commercial law dispute involved three construction projects between Titan-Ikeda Construction and Uniwide Sales Realty. The Supreme Court affirmed the Court of Appeals' modification of the CIAC decision, establishing important precedents for construction contract disputes. The Court held that Article 1724 of the Civil Code, requiring written authorization for additional works, does not automatically grant reimbursement rights once payment is made. Payment for unauthorized works constitutes voluntary fulfillment under Article 1423 rather than recoverable mistake under solutio indebiti unless proven otherwise. The decision emphasized the finality of arbitral awards and strict adherence to procedural requirements in arbitration, particularly the Terms of Reference. VAT liability was determined based on documentary evidence showing parties' actual agreement. Claims for liquidated damages were properly rejected for procedural defects, reinforcing that arbitration proceedings require issues to be properly raised and cannot be introduced belatedly. The case demonstrates the Court's policy of supporting construction industry arbitration as an efficient dispute resolution mechanism while maintaining due process standards.