COMSA Corporación set up this business in 2002 as part of its diversification strategy. COMSA Concesiones, S.L. has since grown to become a competitive manager with the flexibility required to meet the needs of each project.

COMSA Concesiones, S.L. aims to have a presence in all areas of partnership with government in the financing and management of infrastructures. COMSA Concesiones, S.L. divides its concessions business into four areas: railway transport, roads, and real estate.