CV Julang Marching is one of the local companies engaged in the manufacture and service of drum band / marching band musical instruments. CV Julang Marching has not been able to fulfill Marching Bell and Carrier product orders in a timely manner because the layout of the production area is less effective according to interviews with company owners. This is caused by the material handling time is too long because of the distance between far areas. In addition, material handling costs have not been considered in the total operating costs at CV Julang Marching. Therefore, it is necessary to improve the layout of the facilities in the Marching Bell and Carrier production process at CV Julang Marching to improve production performance and reduce material handling costs. The smooth production process can be supported by improving the layout of the facilities using the Systematic Layout Planning (SLP) method and the Flow Planner software as a tool for making alternative designs of the facility’s layout. The results of this study indicate that alternative layout changes have minimized material handling distance by 28.8%, shortened material handling time to 47.6%, and minimized material handling costs by 47.6% so that the layout became more efficient.