St. La Salle Hall

Due to the lack of space in the campus at Paco, the transfer of De La Salle College to Taft Avenue was decided.[11][12] The new 30,300-square-meter (326,000 sq ft) site in Malate, worth ₱55,500 (US$1,270),[8] was acquired through a ₱45,500 (US$1,050) loan.[8] The estimated cost of the construction of building in the site was ₱200,000 (US$46,400). The reason for the selection of the site was the close proximity of St. Scholastica's College, a girls' school located about 200 meters (660 ft) from the new campus. The two schools, one for boys and one for girls, would allow parents to send their children to a single area. Another reason for the selection was its close location to a streetcar station of the Manila Electric Railroad And Light Company allowing quick transport for the students.

Opposition to constructing the college at the new site came from certain American parties who had financial stakes in the properties that were supposed to be developed under the municipal planning scheme for the area. Another problem, concerning the Bronan Plan, arose regarding the site. According to the plan, Taft Avenue would be further extended, in line with identifying the roads leading from Manila to Pasay. If a building were built on the site, it would block the planned extension of Taft Avenue. Brother Acisclus Michael, a Lasallian brother, appealed directly to Governor General Francis Burton Harrison, and expressed that a college ought to be constructed in the area. Harrison failed to get the approval of the municipal board, however. The building plan was only pushed through a year later when the composition of the board changed. In order to get approval, the Brothers themselves took the initiative to donate a piece of the property on the other end of Taft Avenue.

Construction of St. La Salle Hall ca. 1921

In 1916, a competition was held to determine the design of the building. Cornell University alumnus Tomás Mapúa, the first Filipino registered architect and subsequent founder of the Mapúa Institute of Technology (now Mapúa University), won the competition against 9 other architects, and was awarded ₱5,000 (US$116).[8][13][14]

The cornerstone was laid by Manila Archbishop Michael J. O'Doherty on March 19, 1920. On the same day, the Paco site was sold under the condition that the school is allowed to continue operation for 18 months before completely moving to the Taft campus. An amount of ₱260,000 (US$6,020)[8] was spent on the first phase of the construction that took half a year. Classes on the new campus formally started on October 3, 1921.[15] On February 22, 1922, only the first floor and half of the second floor were finished while the rest of the building was still uncompleted due to exhaustion of funds. The building was finally completed on December 15, 1924. Meanwhile, the chapel was completed on November 17, 1939, and was dedicated to St. Joseph.

The Chapel of the Most Blessed Sacrament on the southwestern wing of St. La Salle Hall

The building sustained heavy damages during World War II. Numerous civilians took refuge in the building for protection. It was under shell fire for almost a week. Japanese forces took possession of the building, and transformed it into a headquarters. Sixteen Brothers and 25 other civilians were massacred by Japanese troops inside the school chapel on February 12, 1945.[16][17][18][19][20]

Reconstruction of the building was made from September 1946 to December 31, 1948, at the cost of ₱246,883 (US$5,710).[8] Permission was received from Archbishop O'Doherty in December 1946 to have the chapel re-dedicated to the Most Blessed Sacrament. The chapel was blessed a year later.[20]