There are two typologies that resemble the Brazilian favelas or invasions in the city of Medellin: Villas and Nuevos Asentamientos Urbanos (NAUs), which are newer and generally smaller than the former. Most of them are located in the southern part of the city, especially in Comuna 8. In the Autonomous City of Buenos Aires, there is no typology like the irregular allotments of Sao Paulo or the pirate allotments of Medellin, only outside the city limits.
The population of precarious settlements in the Autonomous City of Buenos Aires has grown significantly since 1983. The Instituto de Vivienda de la Ciudad (IVC) recognizes 53 precarious settlements – 17 villas, 34 NAUs, 2 Transitory Housing Developments (NHTs) – as well as 7 “urbanized neighborhoods”, i.e. housing developments intended primarily for the resettlement of families displaced during the redevelopment of villas and NAUs.
A survey conducted by a group of popular organizations in 2021 identified about 400,000 people, or about 13% of the city’s population, living in the 50 or so neighborhoods mapped by the National Register of Popular Neighborhoods (ReNaBaP).