 Since this date, the building's use had started to decline until 2005 when it became a purely residential service; with less than five hundred users.In 1996 the architect Belén Isla Ayuso was in charge of the first restoration of the façade.The Palacio de Comunicaciones' transformation began in 2003 after the Collaboration Protocol between the City Council of Madrid and the Treasury Department to optimise the use of certain buildings in Madrid.