Across the globe, both developed and developing countries strive to continuously increase economic growth. Many strategies have been developed to guide these countries towards achieving growth and development in a sustainable manner. For many of these countries, cites have become the hubs with regards to the various socio-economic activities taking place within countries. This has in turn subjected cities to tremendous growth. The increased growth of cities has been characterized by radial expansion, wherein development spreads out from the city center to the fringes. The radial expansion of cities has not always been under control or properly managed by government or the private sector as well as the relevant role playing stakeholders. Many socio-economic and environmental challenges have been associated with the rapid urban development that spreads into urban fringes. This dissertation focuses on assessing the sustainability of urban fringes and their developments. It presents a conceptual framework that tackles multiple urban fringe challenges and their various causes as well as the possible solutions thereof. It also focuses on empirically assessing the sustainability of the Cato Ridge urban fringe development in eThekwini Municipality, KwaZulu-Natal Province. The study discovers that the challenges of urban fringe development are economic, social and environmental. It concludes with recommendations for addressing policies of urban fringe developments in order to ensure sustainability. / M.T.R.P. University of KwaZulu-Natal, Durban 2013.