Denamo AddissieI (PhD)Henok Sime2024-03-152024-03-152022-06-01https://etd.aau.edu.et/handle/123456789/2529Industrialized Building System is defined as a construction method and development approach in which components are fabricated on or off site, transported, and assembled with minimal additional work on site. Industrialized Building System (IBS) is an engineering innovation to prevent most compelling impediments of ordinary strategies of development in order to boost project performance. The system has a significant potential that can be harnessed if utilized for projects like mass housing. An in-depth understanding of IBS and investigating those success factors is inevitably very important prior to adopting IBS technique as a construction technique Addis Ababa where delivering housing is one of the most critical performances challenges for city administration and one of the top priorities for the city residents. Responding to the challenge and in recognition to the potential advantages of IBS construction technique, the research presents ranked list of potential advantages of IBS construction technique and prioritized rank of critical success factors that affect a successful implementation for mass housing project in terms of their influence on implementation. The first phase of the research cover an in-depth and systematic review of literature resources that produce 8 critical success factors that directly influences implementation and further expanded into 31 sub-factors, further 5 potential advantages of IBS were identified.Survey research methodology used in second phase of the research where questionnaires and interview survey study is carried out and Analytic Hierarchy Process analysis method is used to prioritize identified critical success factors. The finding rank cost factors first as the most critical factor for IBS implementation followed by knowledge and skill factors. Government policies and regulations factors ranked third, technology factor fourth, supply chain and market factor ranked fifth and management factors at sixth. Production and logistics factors ranked seventh and an integration factor is ranked eighth. Whereas cost efficiency and speed of construction ranked first and second, reduction of waste and quality ranked third and fourth were as construction safety ranked fifth as a potential advantage of IBS. In line with the findings the research recommends the housing construction industry change its conventional on-site approach to IBS construction method, and for a successful implementation respective stakeholders need to play more roles unlocking the critical success factors such as financial incentives, knowledge and skill development and setting regulation and standard to streamline the IBS implementation in housing project life cycle. KEY WORDS: Industrialized Building System, Critical Success Factor, Precast Concrete, Mass HousingenThesis