Eminent Domain and Private Property: Clarifying Expropriation Powers in the Philippines

The power of eminent domain—the State's right to take private property for public use upon payment of just compensation—is one of the harshest proceedings known to law. But what happens when the property sought to be taken is owned by a government-owned corporation? Is it "private property" that can be expropriated, or is it land of the public domain that cannot be touched?

In PNOC Alternative Fuels Corporation v. National Grid Corporation of the Philippines (G.R. No. 224936, September 4, 2019), the Supreme Court settled these questions. The ruling clarifies the distinction between land of public dominion and patrimonial property, and reminds us that when the government delegates its expropriation power, the delegate must strictly follow the limits of the law granting that power.

The Case: A Transmission Line Meets a Petrochemical Park

The National Grid Corporation of the Philippines (NGCP) holds a legislative franchise under Republic Act No. 9511 to operate the country's transmission system. To build the Mariveles-Limay 230 kV Transmission Line Project, NGCP sought to expropriate a portion of the Petrochemical Industrial Park in Bataan—a property administered by PNOC Alternative Fuels Corporation (PAFC), a subsidiary of the Philippine National Oil Company.

PAFC objected. It argued that the property was land of the public domain, devoted to the development of the petrochemical industry, which it called a matter of national interest. Since RA 9511 only allows NGCP to expropriate "private property," PAFC insisted the expropriation was invalid.

The Regional Trial Court ruled in favor of NGCP, and PAFC appealed to the Supreme Court.

The Issue: What Counts as "Private Property"?

The central question was whether the Petrochemical Industrial Park—owned by a government instrumentality—could be considered "private property" subject to expropriation under RA 9511.

The Supreme Court said yes.

The Ruling: Patrimonial Property Is Private Property

The Court first explained that property of public dominion is inalienable and outside the commerce of man. But not all government-owned land falls into this category. Under the Civil Code, property owned by the State in its private or proprietary capacity is called patrimonial property—and this is considered private property.

The key distinction: when the State declares land alienable and disposable, that land ceases to be public dominion and becomes patrimonial. This is exactly what happened with the Petrochemical Industrial Park.

Why the Petrochemical Park Was Not Public Dominion

The Court pointed to the laws governing the property:

• Presidential Decree No. 949 expressly allowed PNOC to "lease, sell and/or convey" portions of the industrial zone to private entities.
• Republic Act No. 10516 expanded this further, allowing the property to be used for "business activities that will promote its best economic use."

These provisions made the land alienable and disposable—the opposite of public dominion. The Court also noted that the management of the industrial estate was "proprietary in character," serving economic ends rather than sovereign functions.

As the Court put it: "The mere fact that a parcel of land is owned by the State or any of its instrumentalities does not necessarily mean that such land is of public dominion and not private property."

Delegated Power Must Be Strictly Construed

The Court also clarified an important principle about delegated eminent domain. While the power to expropriate is inherent in the State, when Congress delegates it to a private corporation like NGCP, that delegate's power is "restrictively limited to the confines of the delegating law."

Here, RA 9511 clearly limited NGCP's power to expropriating "private property." Since the Petrochemical Industrial Park was patrimonial property—and therefore private property—NGCP's exercise of eminent domain was valid.

The Court also found that the expropriation was reasonably necessary. PAFC did not dispute the need for the transmission line, and the parties had even entered into a Tripartite Agreement acknowledging the increased demand for electricity in Bataan and Zambales.

Practical Takeaways

• Government-owned land is not automatically public dominion. If the State has declared land alienable and disposable, it becomes patrimonial property—and for purposes of expropriation, it is treated as private property.
• Delegated eminent domain is strictly limited. A private corporation granted the power to expropriate can only do so within the exact terms of its enabling law. If the law says "private property," the delegate cannot take land of public dominion.
• Public purpose does not shield property from expropriation. Property already devoted to one public use can still be taken for another public purpose, provided the expropriating authority has the legal power to do so.
• The two-stage process of expropriation matters. The first stage determines the authority to expropriate and the propriety of the taking; the second determines just compensation with the help of commissioners. An order of expropriation can be appealed, but the appeal does not stop the determination of just compensation.
• Industrial zones are often patrimonial, not public dominion. A property's designation as an "industrial zone" or "economic zone" typically signals that it is meant for commercial use—making it private property in the eyes of the law.

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