The slum, self-constructed houses and neighbourhoods, signifies the dwelling and home for a very representative part of humanity. This text analyses the different typologies and the different possible and ethical strategies for foreseeing, for remaking and for the resettlement of these self-produced neighbourhoods. Some study cases and examples as references are presented, such as Solanda neighbourhood in Quito, Ecuador, and the Favela-Bairro programme in Rio de Janeiro, Brazil. This article is situated in the field of housing studies and focused specially on architectural issues.