This paper outlines the theoretical and methodological framework of the Urban Lexicon of Granada project, developed from the corpus of the Coordinated Study of the Educated Linguistic Norm of Spanish Spoken in the Main Cities of Ibero-America and the Iberian Peninsula. The research is structured around two complementary goals: the digitalization and informatization of the educated lexicon of Granada, aimed at preserving and providing open access to Francisco Salvador’s original corpus, and the creation of a new urban lexicon that reflects current lexical dynamics and diachronic variation. This dual approach combines linguistic heritage recovery with methodological innovation, through the use of relational databases and digital tools applied to lexical geolinguistics. The project is linked to the international networks VARILEX and Lexical Availability (LD) and proposes a model for updating and reusing historical corpora of educated Spanish in contemporary urban contexts.