Transforming Africa: Villages to Towns, Small Towns to Cities.
Why African urbanization is falling short of its potential.
African Cities tend to grow outwards. That is a problem because it is generally cheaper to provide water, power, transport, and other infrastructure to compact cities than to sprawling ones
Planning regulations, especially in former British territories, are outdated (the French were keener to impose compact cities). Restrictive zoning helps push people into informal areas on the outskirts