[en] The premises where it is proposed to install the library of the Generalitat, is located in the basement of the building belonging to the complex of the Catalan Palace of Valeriola, located to the C / Navellos and built between the years 1700 and 1730. In order to reach the initial state of the premises, from where we will start to carry out the project that arises, a number of previous works must be carried out in order to recover the original volume of the building, eliminating partitions and fissures that conceal the old walls (walls and vaults) Its primeval dimensions. Subsequently, with the original elements in sight will evaluate the possible deterioration of them to take the necessary measures. Likewise, as it is a Cultural Interest, the archaeological study of the walls will be carried out. For its approval by the Department of Culture, a prerequisite and indispensable, to obtain the municipal license to carry out the works of conditioning the premises for the installation of the library of the Generalitat. The conditioning of the premises will be based mainly on actions on the coatings, distribution, carpentry; Outdoor and indoor; Electrical, sanitation, plumbing, air conditioning and security. On this property, a detailed and detailed historical study has been developed, in which all the possible information has been gathered to shed some light on its state and original uses. The need to know the origin and evolution of the same has also served to carry out a proposal of intervention that gives a new and different utility to the servant housing function, for which it served for centuries. Likewise, the knowledge of the morphology and the constructive techniques with which the building was erected and transformed in the past, have served as a base to restore to a certain way the old lost characteristics. The proposed use as an institutional bookstore will serve to help the commercial and tourist revitalization of the neighborhood, giving the building a new functionality at the service of the citizens of Valencia. With the realization of the present work is intended to raise awareness that the need to have knowledge about the past of a historic building, before acting on it, is very important to give back its value and meaning. In the same way, we want to justify that the application of compatible uses on this Heritage is beneficial, both for citizens and for the institutions themselves, thus proving that adding new functionalities contributes to being respected and not to be forgotten. TFGM