This document discusses Sao Paulo's self-help housing scheme as an example of how a city in an LEDC has tried to address urbanization challenges. It describes how Sao Paulo has grown enormously in population to 23 million today, straining resources. The poor live in favelas or shanty towns on undesirable land with makeshift housing and lack of services. Sao Paulo's self-help scheme provides land, loans and materials for residents to build their own homes, improving living conditions through community cooperation.