This Book is a cross-sectional descriptive investigation on traditional Hausa Architecture of Hausa people and royal kingship groups, their houses, city walls and gates, which were originally built by Hausa masterbuilders. For centuries Hausa masterbuilders have acquired and practiced their highly skilful craft in building houses for the people and royal inhabitants of Northern Nigeria. In cities, towns and villages of Kano, Zaria and Gumel, Northern Nigeria, there has been arrangement of Hausa building culture and social structure that is hierarchical ranging from a base level, which includes masterbuilders and labourers that construct mud houses, blacksmiths and local artisans to royalty at the top. The Book explains the traditional masterbuilders’ professional skills and intelligence in using local building materials such as muds, azaras(heavy rigid timbers), tubali(sun dried bricks) bulo(adobe bricks) and thatches in designing royal palaces, city walls and gates of Northern Nigeria. It is a product of research that was presented to the American Institute for Maghreb Studies (AIMS) and West African Research Association (WARA) international conference in Niamey, Niger Republic.