Indeed, he started to re-gain position in officialdom; in 1947 he was appointed to the new Consejo Nacional of Falange and as its member he automatically gained seat in the third Francoist Cortes, assembled in 1949. Though not holding important political positions throughout most of the 1940s, Iturmendi did not entirely fall out of grace. At unspecified time in the mid-1940s he was appointed president of the executive board of Fabricación Española de Fibras Textiles Artificiales, the company created within the Instituto Nacional de Industria framework in Miranda de Ebro. As part of the Francoist plan of reaching full economic independence, FEFASA was tasked with launching production of synthetic fiber; though based on German technology, the bid was not successful before Iturmendi ceased as president. Other commercial enterprises he engaged in were Pola and Nervión, two Bilbao-based insurance companies where he worked as consejero. Iturmendi resumed also the law practice, though not in Bilbao but in Madrid; he served as abogado del estado before various Tribunales in the capital. He engaged also in more ambitious juridical activities. In a move hardly compatible with his earlier work in Liquidadora, he took part in works developing legal infrastructure for semi-autonomous governance which would incorporate some fuerista establishments into the civil code. They climaxed in Congreso Nacional de Derecho Civil in Zaragoza in 1946; its resolutions paved the way for a 1947 decree, which in turned enabled further works. They were to continue grudgingly throughout decades and ultimately turned out to be a failure, yet even 20 years later Iturmendi considered them vital for Spanish legal system. Since the late 1940s reinstated in official structures, Iturmendi rose to governmental strata when in 1951 he was nominated Minister of Justice. None of the sources consulted provides any details on mechanism of his appointment except that it was part of the Franco's balancing game and that Iturmendi followed in the footsteps of Esteban Bilbao. His term turned out to be one of the longest ministerial tenures in the Francoist Spain and lasted 14 years until 1965; until today Iturmendi remains also the longest serving Spanish minister of justice in the entire history. Moreover, during his tenure he was also many times and for short few-day periods double-hatting as a caretaker minister for Public Works, Economy, Education, Labor and Information.