This paper presents an algorithm for efficiently designing, fabricating, and constructing the mechanical, electrical, and plumbing (MEP) systems for buildings. MEP facility construction presents numerous challenges related to its complexity, space limitations, and interference with other trades working in confined areas. Besides, schedule delays can easily be caused by the uncontrolled delivery schedule of the components. This research provides a rational planning algorithm which packages large and complex
MEP systems into several smaller fabricated components using spatial planning algorithms to increase the efficiency of the installation process. Furthermore, the technique is verified and validated by three experts and a case study is presented to demonstrate the effectiveness of this algorithm.