Philippines arbitration landscape strengthens as CIAC marks four decades

As the jurisdiction marked the 40th anniversary of the Construction Industry Arbitration Commission (CIAC) and its statutory framework in 2025, recent institutional initiatives, cross-border partnerships and notable Supreme Court decisions all contribute to a maturing arbitration ecosystem that extends beyond CIAC, even as the construction sector continues to anchor much of the country’s caseload.

• Read more: international arbitration developments and trends for 2025-26

CIAC offers a framework and procedural rules for construction arbitration disputes involving private and public construction projects in the Philippines. CIAC focuses solely on construction arbitration, which sets it apart from most other arbitral institutions. Parties to construction contracts in the Philippines should be mindful of CIAC’s distinctive procedural rules, including its exclusive jurisdiction over construction disputes and specific requirements for the constitution of arbitral tribunals, which include restrictions on the appointment of foreign arbitrators.

The CIAC enforcement regime may appear complex and unfamiliar to international businesses. Nonetheless, judicial precedent demonstrates that the grounds for appeal are both limited and interpreted narrowly. Consequently, parties can expect that CIAC awards will be reliably enforced in the Philippines.

Courts decisions in 2025 have confirmed the limited scope of review of CIAC’s awards and further defined the CIAC’s executory powers.

In April 2025, in Grand Exploit Builder Development, Inc v Hoegaarden Realty Corp, the Supreme Court overruled a decision of the Court of Appeal setting aside a CIAC award due to alleged partiality. It held that the appellate court may only undertake factual review if it is sufficiently shown that an arbitral tribunal’s integrity is compromised or if unconstitutional or illegal acts were committed. Echoing the Supreme Court’s 2021 Global Medical decision, which established limited grounds for challenge, the court stressed that “very stringent and limited instances” justify interference, underscoring judicial restraint in deference to arbitration. Finding no compromised integrity, the court reinstated the award, illustrating the high threshold for challenging CIAC decisions.

Another recent Supreme Court decision confirmed CIAC’s authority to determine who should receive a monetary award and in what proportions, in line with its executory powers under Executive Order 1008 and Article 18.8 of the CIAC’s rules. In this case, since the assets of the involved construction corporation had already been distributed to its stockholders or their heirs, CIAC had the authority to determine the individuals who should receive the monetary award and how much each person should receive.

A few other cases rendered in 2025 are also noteworthy as they bring welcome clarifications for international investors on the Philippine courts’ position on the validity of optional arbitration clauses and the value of foreign arbitral awards.

Ruling on several disputes between Bulk Handler’s Inc, Poro Point Industrial Corp and the government’s Bases Conversion and Development Authority (BCDA), the Supreme Court held that a clause granting parties the right, rather than imposing an obligation, to arbitrate was permissive, not mandatory, and therefore did not bar court proceedings. Its ruling underscores the importance of mandatory wording in arbitration clauses. Furthermore, the Supreme Court adopted the ‘separability’ principle, clarifying that the validity of the main contract did not affect enforceability of the arbitration clause.

In a dispute involving tax exemptions under a service contract between the Philippine Government and contractors, the Supreme Court rejected the Commission on Audit’s claim of undercollection. Two foreign arbitral awards (ICC and ICSID) upholding the contractual tax exemption were considered persuasive, though not binding. The court observed that with the state’s pro-arbitration policy, the “exhaustive contribution” of foreign tribunals was invaluable and deserved respect, particularly where they had made categorical findings in favour of the contractors. This signals a judiciary increasingly willing to engage with international arbitral reasoning where contractual interpretation and state commitments intersect.

CIAC’s anniversary coincided with increased collaboration across the Philippine and international arbitration ecosystems as significant events and partnerships by local and international arbitration institutions were also on the agenda in 2025. They included the first-ever Philippines ADR week organised with the Office for Alternative Dispute Resolution; the Philippine International Centre for Conflict Resolution (PICCR) strengthening ties with other institutes globally through memoranda of understanding (MOIs), such as with the Asian Institute of Alternative Dispute Resolution and the Madrid International Arbitration Centre; and several International Chamber of Commerce (ICC) events held within the country, such as the third Philippines Arbitration Day.

The Singapore International Arbitration Centre (SIAC) also held its third conference in Manila, highlighting the growth in Philippine parties choosing to arbitrate at SIAC over the last five years. Similarity, the Hong Kong International Arbitration Centre held a Philippines conference, as international centres strengthen ties with the jurisdiction.

Co-written by Johanne Brocas of Pinsent Masons.