Informal architecture is the dominant mode of urbanization in rapidly growing and industrializing cities worldwide. In Delhi, the city with the largest population in India has half of its residents living in informal settlements. Lagos, with a population of over 22 million, also has 60% of its residents living in informal settlements. This pattern is also observed in Cairo, Johannesburg, Kinshasa, and other cities in the global south that face similar challenges of inequality and housing shortages. As their population grows and urbanization progresses, the exploration of informal architecture schemes to address the demand for affordable housing and basic services will only increase. While the primary purpose of design is to provide structure, lessons from informal architecture offer insights into how architects can respond to such schemes.
