In light of the increasing population and the rising demand for housing in Iran, especially in Tehran province, the necessity for optimizing construction methods is being felt more than ever. This paper evaluates the qualitative and economic aspects of precast concrete facades in comparison with the traditional washed facade system used in the mass housing industry in the Vavan area. In this research, precast concrete facades are examined as an innovative solution that can enhance the quality of buildings while reducing construction time and costs. The research methodology includes an economic analysis of the precast concrete facades versus the washed facades, focusing on material costs, installation time, maintenance, and the optimization of the lifecycle of both systems. Additionally, qualitative issues such as durability, appearance, and the performance of the building facade against various weather conditions are also explored. To collect data, case studies and field surveys from contractors and engineers active in this area were utilized. The results indicate that precast concrete facades offer significant advantages, including reduced construction time, lower execution costs, and improved final building quality. This system, particularly in mass housing projects in Tehran, has high feasibility and can contribute to optimizing resource consumption and environmental protection. Finally, this research offers strategies for the broader implementation of precast concrete facades in the construction industry and emphasizes the importance of shifting traditional approaches in favor of modern technologies.