The company was formed when a team of engineers acquired Construcciones Padrós S.A., a construction business which had been in financial difficulty, in 1983.
The company acquired a majority holding in Cobra, a support services business, and merged with OCISA S.A. to create OCP Construcciones, S.A. in 1993; it went on to merge with Ginés Navarro Construcciones, S.A. to create Grupo ACS in 1997.