Abstract
This study investigates the influence of waste minimization programs on the performance of building construction projects in Kicukiro District, Rwanda. The research focuses on assessing how the adoption of sustainable waste management practices, such as recycling, material reuse, and on-site waste segregation, impacts key project performance indicators, including cost, time, and quality. The analysis of the study was guided by a number of theoretical frameworks, including the Theory of Constraints, Resource-based Theory, and the Theory of Project Management. The participants in this study included various stakeholders in the construction industry, such as contractors, subcontractors, architects, engineers, project managers, and construction workers. The research design used was descriptive survey research, and the proposed sample consisted of 147 participants currently employed by construction firms in the Kicukiro District. Stratified sampling technique was used to sample data. Questionnaires with closed-ended questions and a five-point Likert scale was the primary method of data collection. Additionally, secondary data was gathered from published reports from journals, and websites. Fifteen personnels reviewed the instruments for validity and reliability, and Cronbach's Alpha was used to measure the study's dependability. The data was analyzed using SPSS version 21, which combines quantitative and qualitative methods. The study utilized correlation coefficient and linear regression models to analyze the data. The coefficients analysis reveals that waste minimization programs applications, value stream mapping, and continuous improvement all significantly influence the performance of building construction projects. The unstandardized coefficient for waste minimization programs applications is 0.506, with a standardized beta of 0.438, indicating a strong positive impact on project performance. The study concludes that waste minimization programs, value stream mapping, and continuous improvement significantly enhance the performance of building construction projects, highlighting the importance of these practices in achieving superior project outcomes. Construction firms should actively implement waste minimization programs, adopt value stream mapping techniques, and commit to continuous improvement practices to significantly enhance the performance of their building projects. Future research should investigate the impact of integrating emerging technologies with waste minimization, value stream mapping, and continuous improvement practices on construction project performance to identify potential enhancements and operational efficiencies.