The purpose of this study was to assess the influence of procurement practices on performance of construction projects in Tanzania. The principle question to be addressed by this study is „what procurement practices are responsible for performance of construction projects in Tanzania?‟ To answer this question and to achieve the primary objective of this study, the researcher focuses on National Housing Corporation (NHC) as a case study. NHC has been selected for this study because it is one of the major public institutions with a significant portfolio of public projects, some of which have succeeded whereas others have failed. The research design used was descripto-explanatory which allowed a detailed description and analysis of the variables under study; describing and presenting their characteristics and explaining their relationships without manipulation. The target population composed of 60 employees from five different departments within NHC headquarters, of which the researcher conducted a census. The study used questionnaires as the primary research instrument. The data was coded as per the objectives to give distinct differences and multivariate regression done to look at the relationship of the variables. Presentation also was done through their calculated mean, frequency, standard deviation and the correlation analysis of the data collected. The study found that indeed various procurement practices influence performance of construction projects in NHC. The supplier selection was found to reduce conflict of interest between the suppliers and management of the organization and in the process influence productivity of the staff. The study further revealed that that contract monitoring and control reduce risks and triggers off an effort to search for solutions to the identified threats to the project success. The study concluded that to a great extent the performance of construction projects is being influenced by adoption of procurement practices, the study recommended that NHC resources need to be more utilized so as to enable more development and less wastage in the company, NHC should handle on the issue of conflict of interest from the management and the outsiders when dealing with the supplier selection and project implementation section. However, the NHC also need to advance more on the policies regarding the quality of construction projects so as to ensure quality projects are achieved at the long run which is beneficial to the company.