Short answer. Fifteen days. The Act states the duration flatly, and the order is issued to the applicant on the date of filing after an ex parte determination, then served personally on the respondent immediately afterwards. Nothing in the section provides for it to renew itself when the fifteen days run out.

What the law says

BPOs shall be effective for fifteen (15) days.

RA 9262, Section 14 — Barangay Protection Orders. Read the full provision →

What the law says

During trial and upon judgment, the trial court may motu proprio issue a protection order as it deems necessary without need of an application.

RA 9262, Section 21 — Violation Of Protection Orders. Read the full provision →

Fifteen days, from an order made the same day

The speed and the shortness go together. A Punong Barangay who receives an application issues the order on the date of filing, after an ex parte determination of its basis — the respondent is not heard first. If the Punong Barangay is unavailable, any available Kagawad may act, and an order issued by a Kagawad must be accompanied by that Kagawad's attestation that the Punong Barangay was unavailable at the time. Immediately after issuance it is served personally on the respondent, by the issuing official or a barangay official directed to do it.

Treat the fifteen days as a window, not a period of cover

The practical meaning of the duration is the deadline it sets you. If you want protection lasting beyond it, the court route has to be started inside that fortnight, and it is a separate application to a different body. A single application filed with a court counts as an application for both the temporary and the permanent order, and it goes to the court with territorial jurisdiction over where you live, or to the family court if one exists there.

What the court timetable looks like by comparison

A court's temporary order may likewise be issued on the date of filing after an ex parte determination, but it runs for thirty days, and the court is to schedule the hearing on the permanent order on or before the date it expires. Where that hearing cannot be completed in time, the court is to extend or renew the temporary order for thirty days at a time until final judgment. Applications of this kind are heard ahead of the court's other business, and failing to act on one within the period the Act sets carries administrative liability.

While the barangay order is in force

It must carry a printed warning, in bold type or capitals, that violating it is punishable by law. A complaint for violating it is filed directly with the municipal, metropolitan or municipal circuit trial court having territorial jurisdiction over the barangay that issued it, and violation is punishable by thirty days' imprisonment, without prejudice to any other criminal or civil action for the underlying acts. Note too that during trial and upon judgment a trial court may issue a protection order on its own, without an application.

Related provisions

Note. Statute text quoted on this page is reproduced from the official enactment and is linked to the full provision. The explanation around it is general legal information from Vivas & Nobles Law Office, not legal advice. Whether it applies to your situation depends on facts only a lawyer reviewing them can assess.