In the last decade, Building Information Modeling had gained a significant popularity considering its efficiency in integrating multiple tasks during construction. The present study provides a methodology of integrating augmented reality with Building Information Modeling (BIM) to provide specific information on modular construction. The primary goal is to provide collaborative efforts to optimize operational efficiency and encounter any challenges faced in the construction process, Enhancing design construction. This study deals with the technical implementation of 2D CAD Drawings into 3D BIM models with efficient structural elements & properties, implementation of 3D BIM models into augmented reality (AR), and testing in real-world construction sites. This provides significant contributions to the improvement of construction techniques by providing a realistic framework for the seamless integration of AR with BIM tools in the setting of modular construction projects. Combining AR with BIM in modular is a revolutionary step in technology for the construction industry. With improved 3D modeling, this new way of working sets a high standard for quality and eco-friendliness in modern construction. This capability not only improves design validation but also reduces costly rework by addressing issues and optimizing the construction life cycle. This technical process increases the advantage of modular construction’s specific requirements. AR guides the assembly team by overlaying step-by-step assembly guidelines into the real world.