Analysis of the Urban Transformations Derived from Railway Housing Construction in Spain During Francoism (1939-1975): An Underestimated Heritage in Use

Two essential characteristics of railway implementation are the large spaces of land occupied in the city and the need for workers. In Spain, both reasons and the post-war period led to the construction of many homes for employees throughout the country using different typologies, ensembles, dwelling designs, free spaces, mixed uses, and a relationship with the surrounding city. The present work presents a quantitative and qualitative analysis of these aspects, concluding on their impact on the current configuration of the urban environment of the cities where they are located and the possibility of urban regeneration that these developments offer. It is a housing stock that is 95% in use and that, in some cases, given the city's growth, occupies privileged current urban positions that have led to its revaluation despite its construction characteristics. The research carried out provides the analysis of the entire country, accounting for and observing the great variety of existing case studies related to different sizes of populations, typologies, and locations (center-periphery), among others. The main conclusions reflect the total absence of urban or architectural approaches in implementing these homes, the lack of quality of the free or community spaces generated between blocks, and the absolute disinterest in the quality of life beyond providing housing for workers close to the workplace. At the antipodes of current approaches to the design of social housing and living conditions, this situation discourages the regeneration of these homes aligned with the objectives of the 2030 Agenda, making their heritage conservation difficult.