The SANSOOK office building project, developed for Sansiri, leverages advanced BIM production services to enhance design efficiency and coordination. Utilizing design authoring and clash detection, we significantly reduced RFIs and minimized coordination issues, ensuring seamless project execution. Our 3D visualization capabilities provided clear insights into design intent, while as-built modeling facilitated accurate facility handover. These BIM methodologies not only optimized the construction process but also delivered substantial value throughout the project lifecycle.