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African cities face land use challenges due to durable construction under weak institutions. Nairobi

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Area of Science:

  • Urban Planning and Development
  • Urban Economics
  • Spatial Analysis

Background:

  • African cities are often characterized by inefficient land use and poor connectivity.
  • Construction decisions for durable buildings under weak institutional frameworks contribute to these inefficiencies.
  • Existing models often overlook the dynamics of slum dwellings and urban redevelopment in growing cities.

Purpose of the Study:

  • To model the dynamics of urban land use, incorporating formal and slum dwellings, and redevelopment to higher building heights.
  • To analyze the urban evolution of Nairobi using a unique high-spatial resolution dataset.
  • To identify the drivers of inefficient land use and housing volume distribution in Nairobi.

Main Methods:

  • Development of a novel model for urban land use dynamics.
  • Utilizing a unique high-spatial resolution dataset for Nairobi's urban evolution.
  • Analysis of housing volumes and land use patterns in relation to institutional strength.

Main Results:

  • Nairobi exhibits insufficient building volume across most of the city.
  • Large slum areas with low housing volumes are concentrated near the city center.
  • Corrupt institutions deter the conversion of land to formal sector usage in central areas.

Conclusions:

  • Weak institutions and land use policies significantly impact urban development in African cities.
  • Nairobi's urban structure is characterized by spatial inefficiencies driven by institutional factors.
  • Targeted institutional reforms are crucial for optimizing urban land use and housing development.