A Research report submitted in Partial/Fulfillment of the Requirements for an Award of a Bachelor Degree of Science in Economics, Project Planning and Management (BSc – ECO PPM) of the Mzumbe University 2020The study was concerned with the challenges facing the timely execution of public sector housing projects in Tanzania. Current reports showed that the development of urban areas has led to a drastic population increase in urban areas and this causes a great challenge in the housing sector in Tanzania. The National Housing Corporation is the case study of this report. The general objective of this research report was to examine the challenges facing the timely execution of public sector housing projects in Tanzania while the specific objectives were to examine the extent to which financial constraints, personnel competency and resource mobilization affect the timely execution of public sector housing projects. The research hypothesis that guided the study are financial constraints do not affect the timely execution of public sector housing projects, personnel competency does not affect the timely execution of public sector housing projects and resource mobilizations do not affect the timely execution of public sector housing projects. Theories that guided the study were the Resource-Based theory, Chaos theory and the Theory of Constraints. The study used a cross-sectional research methodology and employed the use of primary and secondary data. The sample used where 100 people. Simple random and stratified sampling procedures were used in selecting the respondents. An additional judgmental sampling technique was also used to collect data for information that was seemed confidential and not easy to access through mere random sampling. The mode of data collection was through the use of questionnaires and interviews. Descriptive statistics and probit regression analysis was used to answer the questions arising from the three objectives. The results eventually revealed that financial constraints are a great challenge in the timely execution of public sector housing projects. The results also revealed that workers with more skills affect timely execution of public sector housing projects positively in a sense that the more the experiences, the more likely for public sectors to timely execute its housing projects. The last results of the research revealed that resource mobilization affects the timely execution of public sector housing project that is, the more the people allocated in a project, the more likely it is for it to be timely executed.