 During the following years the palace belonged to his descendants the Dukes of Alcudia and Sueca.During the Spanish Civil War (1936-1939) the construction suffered considerable damage, in addition to the loss of numerous works of art.In 1974 it was declared a National Monument, being expropriated in 1998 to the last owner, Enrique Jaime Ruspoli Morenés, 19th Count of Bañares son of the Dukes, by the City Council of Boadilla del Monte, who had planned to install in its dependencies the headquarters of the European Institute of Higher Studies of Culture and Communication.