page_title: São Paulo
section_title: Urban planning
hierarchical_section_title: São Paulo / Urban infrastructure / Urban planning
caption_attribution_description: Português: Vista de São Paulo a partir do mirante do Edifício Altino Arantes
context_page_description: São Paulo is a municipality in the Southeast Region of Brazil. The metropolis is an alpha global city and the most populous city in Brazil, the Americas, the Western Hemisphere and the Southern Hemisphere. Additionally, São Paulo is the largest Portuguese-speaking city in the world. The municipality is also the world's 4th largest city proper by population. The city is the capital of the surrounding state of São Paulo, the most populous and wealthiest state in Brazil. It exerts strong international influences in commerce, finance, arts and entertainment. The name of the city honors the Apostle, Saint Paul of Tarsus. The city's metropolitan area, the Greater São Paulo, ranks as the most populous in Brazil and the 12th most populous on Earth. The process of conurbation between the metropolitan areas located around the Greater São Paulo created the São Paulo Macrometropolis, a megalopolis with more than 30 million inhabitants, one of the most populous urban agglomerations in the world.
  Having the largest economy by GDP in Latin America and the Southern Hemisphere, the city is home to the São Paulo Stock Exchange. Paulista Avenue is the economic core of São Paulo.
context_section_description: São Paulo has a history of actions, projects and plans related to urban planning that can be traced to the governments of Antonio da Silva Prado, Baron Duprat, Washington and Luis Francisco Prestes Maia. However, in general, the city was formed during the 20th century, growing from village to metropolis through a series of informal processes and irregular urban sprawl.
  Urban growth in São Paulo has followed three patterns since the beginning of the 20th century, according to urban historians: since the late 19th Century and until the 1940s, São Paulo was a condensed city in which different social groups lived in a small urban zone separated by type of housing; from the 1940s to the 1980s, São Paulo followed a model of center-periphery social segregation, in which the upper and middle-classes occupied central and modern areas while the poor moved towards precarious, self-built housing in the periphery; and from the 1980s onward, new transformations have brought the social classes closer together in spatial terms, but separated by walls and security technologies that seek to isolate the richer classes in the name of security.
  Thus, São Paulo differs considerably from other Brazilian cities such as Belo Horizonte and Goiânia, whose initial expansion followed determinations by a plan, or a city like Brasília, whose master plan had been fully developed prior to construction.
  The effectiveness of these plans has been seen by some planners and historians as questionable. Some of these scholars argue that such plans were produced exclusively for the benefit of the wealthier strata of the population while the working classes would be relegated to the traditional informal processes. In São Paulo until the mid-1950s, the plans were based on the idea of "demolish and rebuild", including former Mayor Prestes Maia São Paulo's road plan (known as the Avenues Plan) or Saturnino de Brito's plan for the Tietê River.
  The Plan of the Avenues was implemented during the 1920s and sought to build large avenues connecting the city center with the outskirts. This plan included renewing the commercial city center, leading to real estate speculation and gentrification of several downtown neighborhoods . The plan also led to the expansion of bus services, which would soon replace the trolley as the preliminary transportation system. This contributed to the outwards expansion of São Paulo and the peripherization of poorer residents. Peripheral neighborhoods were usually unregulated and consisted mainly of self-built single-family houses.
  In 1968 the Urban Development Plan proposed the Basic Plan for Integrated Development of São Paulo, under the administration of Figueiredo Ferraz. The main result was zoning laws. It lasted until 2004 when the Basic Plan was replaced by the current Master Plan.
  That zoning, adopted in 1972, designated "Z1" areas (residential areas designed for elites) and "Z3" (a "mixed zone" lacking clear definitions about their characteristics). Zoning encouraged the growth of suburbs with minimal control and major speculation.
  After the 1970s peripheral lot regulation increased and infrastructure in the periphery improved, driving land prices up. The poorest and the newcomers were now unable to purchase their lot and build their house, and were forced to look for a housing alternative. As a result, favelas and precarious tenements (cortiços) appeared. These housing types were often located closer to the center of the city: favelas could sprawl in any terrain that had not previously been utilized (often dangerous or unsanitary) and decaying or abandoned buildings for tenements were abundant inside the city. Favelas went back into the urban perimeter, occupying the small lots that had not yet been occupied by urbanization – alongside polluted rivers, railways, or between bridges.
  By 1993, 19.8% of São Paulo's population lived in favelas, compared to 5.2% in 1980. Today, it is estimated that 2.1 million Paulistas live in favelas, which represents about 11% of the total population of the metropolitan area.
caption: The city view from Altino Arantes Building
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