RRC has certified its quality, environment and occupational health and safety systems according to ISO standards, in their most up-to-date versions, namely ISO 9001: 2015, ISO 14001: 2015 and ISO 45001: 2018. It also has the Verification of Greenhouse Effect Effects according to ISO 14064-1: 2006.

RRC was the first national construction company to certify its Environmental Management System according to the ISO 14001 standard.

FCC Construcción has its quality, environment and occupational health and safety systems certified with the same standards. It also presents the certification of the IDi, Information Security and Collaborative Business Relationship systems according to the UNE 166002: 2006, ISO / IEC 27001: 2013 and ISO 44001: 2017 standards, respectively. The integration of RRC in this Group allows you to implement these systems in accordance with all regulatory requirements, whenever necessary.

FCC Construcción was the first Spanish construction company to obtain the certification of its quality management system by AENOR and the only one to hold the ISO 27001 Information Security certificate. It also has the guarantee mark "Madrid Excelente".