Fifteenth-century wooden flooring, which originally came from the old Pasig Cathedral were used in the mansion and remained intact until now.

When siblings Cristino II and Vina died, the childless couple Dr. Jose Concepcion and "Naning" were the last heirs of the mansion.

The mansion was bought in the 1980s by the municipal government of Pasig under the administration of Mayor Emiliano Caruncho.

On February 19, 1945 the American flag was raised at the veranda below the tower of the mansion to signify the liberation of Pasig from the Japanese forces.

[1] The Concepcion Mansion was renovated and inaugurated as the Pasig City Museum in 2001 and has been a venue for exhibits, presentations, musical performances, art workshops and book launchings.