Its present-day structure is constructed at 1968 and subsequently became the seat of the Roman Catholic Diocese of Maasin which covers the City of Maasin and the other municipalities of Southern Leyte, including the towns of Matalom, Bato, Hilongos, Hindang, Inopacan and City of Baybay in the province of Leyte.

When the Spanish missionaries arrived there, they found the native population to be relatively organized, friendly and interested in the Catholic faith.

The province suffered heavily from the attacks of the Moro people's resistance against Spanish colonizers and the original church was destroyed in 1754.

Following the departure of the Jesuits, the Augustinian fathers took over the parish in 1771 and ordered the construction of the second concrete church a kilometer away from the ruins of the first one.

Another wave of missionaries came in 1843, this time the Franciscans, and they succeeded on establishing Our Lady of Assumption as the Patroness of the Parish on August 15.

The population of Southern Leyte is made up mostly of Cebuano-speaking people because of its closeness, geographically, to Cebu and Bohol.

Apart from the usual ministerial and sacramental functions, the clergy has succeeded to penetrate the people's conscience with concern for other issues, such as reforestation, among others.

In recognition of the numerous miracles that were attributed to the intercession of Nuestra Señora de la Asuncion de Maasin, on the closing rites of the Golden Jubilee of the Diocese of Maasin, the altar image or the "Patrona" received the honor of episcopal coronation headed by Cardinal Tagle on August 15, 2018, during the Thanksgiving Mass and the Solemnity of the Assumption of Mary.

The image is vested with a robe and a cloak made from different materials and embroidery styles offered by her devotees.

In recognition of the numerous miracles that were attributed to the intercession of Nuestra Señora de la Asuncion de Maasin, on the closing rites of the Golden Jubilee of the Diocese of Maasin, the altar image received the honor of Episcopal Coronation on August 15, 2018 - the Solemnity of the Assumption of the Blessed Virgin Mary headed by Cardinal Tagle.

Pope Francis later granted a decree of canonical coronation on December 14, 2021, and the image of the Virgin was crowned by Charles John Brown, Papal Nuncio to the Philippines, on August 13, 2022.

The present design heavily borrows from the characteristics of baroque churches in the Philippines, with its traditional triangular pediment and simple facade punctuated by rectangular niches for the images and windows.

However, a seemingly modern style was applied as shown by its rounded, three-layered bell tower which is a common feature among late-18th-century churches.

Following the Second Vatican Council, there was reform and renewal in which old retablos were removed, as happened in the Cathedral in Maasin City.