Bennett Oghifo Low cost housing is realisable if deliberately designed and constructed and put within the financial reach of average Nigerians, Bolaji Orekoya, a former Permanent Secretary, Ministry of Housing, Ogun State, has said. The United Nations Sustainable Development Goal 11 states the imperative of public investment in safe and affordable housing, considering the fact that rising urban population is causing rapid growth of cities and a boom in mega-cities, especially in the developing world with slums becoming a more significant feature of urban life. Presently, statistics show more than half of humanity live in cities, and it is projected that by 2050, two-thirds of all humanity—6.5 billion people—will be urban. “Sustainable development cannot be achieved without significantly transforming the way we build and manage our urban spaces.