Slums had been perceived as areas prone to a lot of challenges especially overcrowding, poverty, poor sanitation, crime, violence, HIV/AIDS pandemic, marginalization, and segregation among others among others. Due to such stereotypical convention and misinformation, slums had been neglected and not considered as part of the city despite the major contribution it offered, especially in the early days. A number of theories have been developed about slums without due consideration of the underlying factors of such neighborhoods. At least three factors have been put forward in trying to understand why such settlements crop up. These include a colonial system of planning, a system of governance, and rapid population growth even though such may not be applicable in other countries. Discovering that such conditions were no longer improving, various governments came up with various strategies to try to contain it, namely: demolition and clearance, relocation to public housing, site and service, and later the slum upgrading initiative. The World Bank and UN-HABITAT also developed of Cities Alliance for Cities without slums to encourage states to improve their slums. The Kenyan Government has deployed a lot of resources in the Kibera slum to develop and uplift the living standards of the residents. The findings of the study showed that the beneficiaries of the program as transformative and deprived. Some residents feel that the program has disrupted their day-to-day activities hence leaving them without anything to cling to. The benefits include easy accessibility, security, improved health services, lighting, and clean environmental conditions for sustainable living. The study adopted a descriptive research design which is composed: of pre-field work, field work, literature review, data collection, and interpretation as a study approach. The broad objective of the study was an evaluation of the slum upgrading scheme in Nairobi County. The data analysis was done using Statistical Package for Social Scientists (SPSS) version 20 and Microsoft Excel. The presentation was done by use of graphs, charts, and tables. The final result was the preparation of an integrated plan for the sustainable development of Kibera.