>>216669068
I took a class on this in architecture school (which was taught by a really hot Brazilian woman who was basically the only reason I took the class).
The favelas started when Brazil began industrializing and people moved the cities in droves for work. They literally just built their houses on open land surrounding the city, and because of Brazilian squatting laws they owned the land after living there for like 5 years or something. Then over time the downtown areas of the city grew until they were connected to the favelas.
Nowadays it's essentially just a regular renter's economy you'd find anywhere else. Some slightly richer favela dweller owns the building and rents out rooms to poorer favela dwellers. The owners build new floors on top of the existing buildings all the time to have more spaces to rent out.
Occasionally someone will sell their building and a developer will knock it down, building a brand new skinny apartment building on the land they now own.
o algo