UN-Habitat, the United Nations agency mandated by the General Assembly to promote socially and environmentally sustainable towns and cities, has designed dual methodologies for urban planning for growing cities and governments around the world. These approaches are called planned city extension (PCE) and planned city infill (PCI), and serve as an alternative to unplanned and chaotic urban expansion.
UN-Habitat’s PCE and PCI methodologies take an integrated approach to the drafting and subsequent implementation of plans for cities and are based on three complementary pillars: urban planning and design, regulatory framework, and urban finance. They recognize that for urban planning to be implemented successfully, it is necessary to analyse the prevailing regulatory framework and to accurately assess the plans’ feasibility from the standpoint of both the private and public sectors.