Dr. Melissa TeoMESHAL ABDULAZIZ BAKHEET ALHARBI2022-06-042022-02-222022-06-04110254https://drepo.sdl.edu.sa/handle/20.500.14154/63998This thesis investigated the organisational and project levels factors influencing team effectiveness to achieve quality of building projects in the KSA. Team effectiveness outcomes were also investigated. The research employed two data collection stages for quantitative and qualitative analysis. The survey was validated for evaluating perceived team effectiveness factors to achieve quality through the interviews. The principal component analysis and Thematic analysis were utilised. Relationships among team effectiveness factors were explored in the developed conceptual framework. The conceptual framework enables construction organisations to better understand the organisational and project levels influences on team effectiveness to achieve quality.377enThesis