This thesis aims to study the resource-related factors that contribute to cost overruns in the Palestinian building and construction sector. The primary objectives of this research include studying the extent of cost overruns in construction projects in Palestine, assessing the importance of resource-related factors that contribute to these overruns, measuring the importance of each factor as perceived by stakeholders (contractors, consultants, and owners), as well as determining the effects resulting from cost overruns in the Palestinian building and construction sector.