Informal housing delivery dimensions in Nigeria Abstract Nigeria is a West African country that borders the Republic of Benin in the west, Cameroon in the east and Niger in the north. Its coast lies on the Gulf of Guinea in the south and it borders Lake Chad to the northeast. Noted geographical features in Nigeria include the Adamawa and Jos Plateaus, and the Niger River and Niger Delta. The country's geographic coordinates are 10°00'N and 8°00'E. Its climate varies from equatorial in the south, tropical in centre (middle belt), to arid in the north. As for vegetation, its rich variety confines rain forest covers the coastline of the Atlantic Ocean. The Savannah covers Nigeria’s middle belt, especially around the Niger and Benue river basins. Its extreme northern part is the Sahel semi-desert. Socially, Nigeria’s population as at 2006 census stands at 135 million. The country is a multiplicity of ethnic, religious and cultural groups. However, the population predominantly practices Islam and Christianity. Paganism is rare among most of the rural peasant. Politically, Hausa, Igbo and Yoruba are among the major languages in Nigeria. Practically, Islamic way of life is synonymous with Hausa culture, as most non-Muslims associate themselves with the faith. Other ethnic groups are Fualni (traditionally cattle rearers) Gbagyi (Gwari), Nupe, Ijaw, Kanuri, Obibio, Igbira, etc. Abuja city lies between latitude 8.25 and 9.20 degrees north of the equator and longitude 6.45 and 7.39 degrees east of the Greenwich meridian. It is strategically located within the centre of Nigeria without a major tribal ownership. Gbagyi ethnic group is a minority tribe in Nigeria, whereas the main ethnic groups are Hausa, Ibo, and Yoruba. A federal Capital Territory, Abuja, carved out of four other states of Nigeria namely Kaduna, Plateau, Kogi, and Benue states, with a landmass of about 8,000 sq. km out of which the city itself occupies about 250 sq. km. In December 1991, Abuja officially replaced Lagos as the capital and the seat of the Federal Government of Nigeria. This chapter outlines the problem of informal housing and its transformation within an urban environment due to the effects of urbanization and globalization, within a major city in Nigeria. It focuses on Gbagyi peri-urban settlements of Nigeria’s Federal Capital Territory (FCT), Abuja, from 1976-2006. This period is divided into three development era, namely incipient the era (1976-1986), the intermediate era (1987-1991) and the consolidated (1992-2006).