In São Paulo, Brazil, the urbanization of workers without education or a steady income has caused a large demand for social housing, with 800,000 families forced to live in settlements and slums without a legal basis. At the same time, the crime rates of the past decades brought forth a standard of ‘enclavement’ of urban blocks, with fences protecting shared outdoor spaces. These add to the segregation of a city that already has immense inequality. Although many have written about creating a safe living environment with architecture in the Western world, applications in the global south are lagging behind. This thesis explores how architectural design can positively influence safety in the periphery of São Paulo, taking into account socioeconomic segregation, local building practices, and social equity. For this, a literature review, a comparative analysis of precedents, a contextual analysis, and research by design are used. The design is made for Parque Cocaía, a greenfield site with environmental restrictions on the outskirts of the city, in Grajaú. It shows how the design of building types that foster the creation of communities, public space that invites life into the streets, and dwelling types that allow watching over the public realm and shared spaces can all contribute to a safer living environment. The design combines lessons learned from Western theory, social housing precedents, and the local context and thereby offers an alternative to enclavement as a means to assure safe living. Future research and design can build on this to prevent further segregation of Brazilian society.