The precarious territories have been called in different ways according to periods and countries, being the definition in direct relation with the housing problematic of the moment, the sources of available information and the standards of what is considered precarious according to the period, place and economic development of the country. Depending on the current urban transformations, specifically the intense verticalization process that our cities experience, a new conceptualization of housing precariousness is proposed, which re-writes, complements and diversifies the concept. The present study proposes to broaden the view regarding precariousness, re situating the discussion from the point of view of the housing typology subject to analysis, the location of the phenomenon and the producer actor. This under an analysis that questions the standards of what is considered precarious today, in light of emerging new urban processes, such as verticalization. Based on the above and the development of an indicator of precarious housing for the commune of Estación Central, we conclude that we are facing a "new form" of housing precariousness, which is being traduced into a dense and vertical residential production, under a logic of unprecedented mass housing production for Chilean cities.