This project aims to fill the gap of ICT technology between the building industry and the robot industry. The building industry often adopts either design-bid-build or design-build workflows. In both workflows, the designers put their wisdom in a set of drawings, and the builders read the drawings and build a house. While involving robots in the workflow, a new method, transferring the drawings into a series of robot commands, is required. We develop a software package, tentatively coined as Robotic Studio for Builders (RS4B) to link the BIM and robot controllers. RS4B includes four software: BIM Exporter (Be), Assembly Planner (Ap), Robot Simulator (Rs) and Motion Planner (Mp).