In Bogotá, as in most large Latin American cities, urban informality is a persistent phenomenon. Although the expansion of new informal land has decreased, the densification of existing informal settlements is one of the mechanisms driving the persistence of informality. This text aims to analyze the factors that determine the growth of built space in areas of informal origin in Bogota in the period 2007-2018. We particularly analyze the role of housing market pressures on urban structure, the incidence of sociodemographic variables, and urban planning regulations in the production of built space in informal areas. We conclude that market pressures are forcing low-income sectors to build in peripheral areas to maintain their location within the city at the cost of high density and low access to urban amenities. On the other hand, the flexibility of the production processes of informal built space allows them to respond more quickly to increased demand. Building with urban planning licenses in the most consolidated areas explains part of the production of built space in these settlements of informal origin. Formal production could then contribute to the displacement of the population from consolidated popular sectors to the peripheries.