G.R. No. L-14597. March 27, 1961.
PASTOR TOLENTINO, petitioner, vs. BASILIO BALTAZAR, DIRECTOR OF THE BUREAU OF LANDS and ESTATE OF ANGEL BALTAZAR, deceased, respondents.

FACTS

Angel Baltazar filed a homestead application for a parcel of land, which was approved in 1940. In 1941, he mortgaged the present and future improvements on the land to Pastor Tolentino to secure a P1,500 loan, with a stipulation allowing Tolentino to foreclose or compel a sale of the improvements if the debt was not paid within six years. After Angel Baltazar’s death in 1945, his widow and children conveyed their rights to his son, Basilio Baltazar. Relying on this, Basilio petitioned the Bureau of Lands to cancel his father’s application and substitute his own, which was granted. A homestead patent and subsequently Original Certificate of Title No. P-790 were issued in Basilio’s name in 1951.
In 1952, Tolentino filed an action against Basilio, the estate of Angel, and the Director of Lands, seeking cancellation of the title on grounds of fraud, with the Director joining the plea via a cross-claim. The Court of First Instance dismissed the complaint, finding no fraud, ruling the land was no longer public domain, and holding Tolentino’s claim was merely a money claim against the estate. The Court of Appeals affirmed, primarily on procedural grounds, stating Tolentino lacked personality to sue for reversion (a power vested solely in the Solicitor General) and that the Director’s appeal was not perfected.

ISSUE

Whether petitioner Pastor Tolentino is entitled to relief for the enforcement of his mortgage over the homestead improvements despite the issuance of a patent and certificate of title in the name of Basilio Baltazar.

RULING

Yes. The Supreme Court reversed the lower courts. The Court clarified that while an action for reversion of land to the public domain under Section 101 of Commonwealth Act No. 141 can only be instituted by the Solicitor General, this provision pertains to the cause of action, not the plaintiff’s personality to sue in this specific case. Tolentino’s action was not strictly for reversion but for the enforcement of a pre-existing mortgage right.
Critically, the Court found that Basilio Baltazar knew of the valid mortgage in favor of Tolentino before obtaining the patent and title, as evidenced by the heirs’ promise to pay the debt after Angel’s death. Consequently, Basilio secured the patent and title subject to a subsisting trust regarding Tolentino’s mortgage interest. Under Tolentino’s prayer for equitable relief, the action was treated as one to compel the execution of the necessary instrument for the mortgage’s registration and annotation on the title.
The Court thus ordered Basilio Baltazar to execute a corresponding deed of mortgage over the improvements in favor of Tolentino within one month, with the Clerk of Court authorized to do so if Basilio failed, and to surrender the owner’s duplicate certificate of title for annotation of the mortgage. Costs were imposed on Basilio Baltazar.