It was erected in 1984 and serves as the seat of the Diocese of Daet, which was created by a papal bull on May 27, 1974.

Antonino O. Reganit as parish priest of Daet, the cathedral compound was acquired from the Magana Family.

Construction of a complex building was started, the center of which was the proposed main altar.

September 1, 1974, was the canonical erection day of the diocese, with the ordination and installation of the first bishop, Celestino R. Enverga.

It was dedicated to the Most Holy Trinity by Jose T. Sanchez, Archbishop of Nueva Segovia, with Wilfredo D. Manlapaz as preacher and Pablo Balon as rector.