Prefab modular buildings, also known as off-site construction, involve the fabrication of building components in a controlled factory environment. These components, or modules, are then transported to the construction site for assembly. The modules are typically constructed using standardized designs and production methods, ensuring consistency and quality. The off-site fabrication process allows for simultaneous on-site preparation, reducing construction time significantly. Additionally, the controlled environment enables precise manufacturing, minimizing material waste. Prefab modular buildings offer flexibility in design, allowing for customization and easy scalability. With advancements in technology and increased adoption, prefab modular construction is revolutionizing the industry by offering efficient, sustainable, and cost-effective building solutions.