By following the neoliberal Filtrado theory, for low and middle income classes the only option was to move to large and old uninhabited colonial houses that were divided into small housing units. Today, such houses are known as tenement houses. The lower-class which did not receive regular income was left to its own devices.
En correspondencia con la teoría neoliberal de Filtrado, para la clase media baja y baja solo quedaba la posibilidad de mudarse a las antiguas grandes casas coloniales, entonces vacías y divididas en pequeñas unidades habitacionales, convertidas en lo que se conoce ahora como casas de vecindad.