 Locsin and Partners, led by his son Leandro Y. Locsin, Jr.

Locsin also designed some of the buildings at the UP Los Baños campus.The Dioscoro Umali Hall, the main auditorium, is clearly an example of his distinct architecture, with its large canopy that makes it resemble the main theatre of the Cultural Center of the Philippines (CCP).Most of his work is concentrated on the Freedom Park, with the Student Union Building which was once damaged by a fire, the Carillon, the Continuing Education Center and the auditorium.