PolicySpace is based on concepts of urban economics, spatial heterogeneity, functional urban regions, heterogeneity of taxes collection, equal access to opportunities and the need of unified planning. In short, PolicySpace is an open-source, spatial-economic agent-based model with three markets and a tax system that empirically simulates 46 metropolitan regions in Brazil. Contributions include the explicit intra-urban space, mobility of families (via real estate Market), population dynamics (demographics), use of distance as a mediator. The model runs automated sensitivity analysis, alternative tax distributions and repeated times for each or all metropolitan regions. The model is validated in a five-step cumulative process.

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