In a framework of increasing complexity in the construction of urban space, where the agents and interests are multiple and sometimes divergent, this work accounts for the emergence of new expressions of informal commerce within the framework ofa dense and vertical real estate production in the Commune of Central Station, Santiago de Chile.These expressions are the result of the coexistence of dense buildings and a contiguous public space thatsustains daily consumption practices not resolved in formality, with atypical hints to those known in Chilean cities, forming a new urban micro-order. This new micro order, which at first glance is a typicalagglomeration economy, reports synergistic components with the surrounding dwellings, provides new commercial typologies and mainly reveals new forms of use and appropriation of public space