Premature architecture includes all the projects on urbanism and architecture conceived by Isidoro Valcárcel Medina, an artist who for decades has been nourishing himself from the city and our constructed environment as one of his main sources of inspiration and action. A "manifesto of disagreement between the logic of construction -as an economy of use- and the constructive logic -as a technique of use-". These are not utopian projects, on the contrary, according to the artist himself, they are the most topical, united to the place and the moment, because they do not dictate ways of living, but propose other ways of making life. Valcárcel Medina unfolds a set of personal actions, which may well serve as an example, "but never have an exemplary value". These very particular, heterodox and clairvoyant proposals by Valcárcel Medina (2007 Plastic Arts National Prize and 2015 Velázquez Prize) move from the domestic to the public space, and would need another era and another society to materialize. This is what makes them, therefore, premature creations. The edition is completed with the replicas that the artist formulated in Architect's Data, by Ernst Neufert, commonly known as the Neufert. Co-edition: Caniche Editorial, Musac and Azkuna Zentroa – Alhóndiga Bilbao.