Public tender
Renfe, at the time under the Ministry of Public Works, made a public call for tenders to award the urban development project. The successful bidder is Unitaria, a company formed by the financial institution Argentaria and the construction company San José, among others.
As a result of the award, the company Desarrollo Urbanístico de Chamartín (DUCH) was formed, with Argentaria (65%), San José (20%), and Procisa (15%) as shareholders, and with the sole purpose of promoting and developing the project.