Local Autonomy Prevails Defining Boundary Disputes Between Municipalities AND Highly Urbanized Cities

When two local government units quarrel over their territorial boundaries, which body has the legal authority to settle the matter? The Supreme Court has provided a clear answer: under the Local Government Code, it is the respective legislative councils—the sanggunians—of the contending LGUs that hold jurisdiction, not the Commission on the Settlement of Land Problems (COSLAP). This ruling in National Housing Authority v. Commission on the Settlement of Land Problems (G.R. No. 142601, October 23, 2006) reaffirms the principle of local autonomy and clarifies the limits of administrative agencies.

The Dispute Between San Jose del Monte and Caloocan City

The case traces back to a long-standing boundary conflict between the Municipality of San Jose del Monte, Bulacan, and the City of Caloocan. In 1994 and 1995, the Sangguniang Bayan of San Jose del Monte passed resolutions recognizing certain boundary lines between the two LGUs. The Department of Environment and Natural Resources conducted a relocation survey, but the municipality was dissatisfied with the results and filed a complaint with COSLAP against the National Housing Authority (NHA).

Several residents of San Jose del Monte joined the complaint, alleging that the NHA's Bagong Silang Resettlement Project encroached on their properties. Notably, the City of Caloocan was not impleaded as a party. In 1998, COSLAP ruled that the boundary specified in the Sangguniang Bayan's resolutions was correct, effectively holding that the NHA project encroached upon the residents' properties. COSLAP later issued a writ of execution.

The Issue: Did COSLAP Have Jurisdiction?

The central question before the Supreme Court was whether COSLAP had jurisdiction over the boundary dispute between the municipality and the highly urbanized city. The Court answered in the negative.

COSLAP was created by Executive Order No. 561 (1979) as an administrative body to settle land problems expeditiously. However, Section 3 of that order enumerates its powers and limits its jurisdiction to specific cases, such as disputes between occupants and squatters, pasture lease agreement holders, timber concessionaires, government reservation grantees, and public land claimants. Nowhere in the order is COSLAP granted authority over boundary disputes between local government units.

The Proper Forum Under the Local Government Code

The Supreme Court pointed to Republic Act No. 7160, the Local Government Code, which expressly governs boundary disputes. Section 118(d) provides that boundary disputes involving a component city or municipality on one hand and a highly urbanized city on the other shall be jointly referred for settlement to the respective sanggunians of the parties. Section 118(e) requires the sanggunians to attempt an amicable settlement within 60 days and, failing that, to formally try and decide the issue within another 60 days.

Section 119 allows any party to appeal the sanggunians' decision to the proper Regional Trial Court. The implementing rules of the Local Government Code likewise assign jurisdiction over such disputes to the sanggunians of the LGUs concerned.

Why the COSLAP Resolution Was Void

Because COSLAP acted without jurisdiction, its resolution was void from the start. The Court emphasized that a judgment issued by a quasi-judicial body without jurisdiction is no judgment at all—it cannot become final and executory, and any writ of execution based on it is void. A void judgment never acquires finality, and an action to declare its nullity does not prescribe.

The Court of Appeals had dismissed the NHA's petition for certiorari on procedural grounds—being filed out of time and for failure to avail of the remedy of appeal. The Supreme Court corrected this, holding that certiorari was the proper remedy precisely because the COSLAP resolution was void. The appellate court should have dismissed the petition on the ground of lack of jurisdiction rather than on technical procedural grounds.

Practical Takeaways

• Boundary disputes between LGUs are not for COSLAP. Administrative agencies like COSLAP are tribunals of limited jurisdiction and can only exercise powers expressly granted by their enabling statutes.
• The sanggunians are the proper forum. Under Section 118 of the Local Government Code, boundary disputes involving a municipality and a highly urbanized city must be jointly referred to the respective sanggunians of the parties.
• Appeals go to the Regional Trial Court. Section 119 allows any party to elevate the sanggunians' decision to the proper RTC, which must decide the appeal within one year.
• Void judgments have no legal effect. A ruling issued without jurisdiction can never become final, and any execution based on it is void. The parties are left in the same position as if no judgment had been rendered.
• Local autonomy is protected. The ruling reinforces that LGUs, through their legislative councils, have the primary responsibility to resolve their own territorial disputes, subject only to judicial review.

This article is general information and not legal advice. For your specific situation, consult a lawyer or ask ASG Legal AI.