The process of determining the order of Information Systems (IS) adoption in construction management processes, which are highly interrelated with one another, is generically dynamic because the IS adoption in one management process affects the other management processes, consequently changing the order of IS adoption throughout the entire process. In this paper, we discuss the Dynamic Priority Evaluation Model (DPEM). A priority evaluation criterion in DPEM is the expected IS benefits, which is represented by the efficiency increase of management processes through the IS adoption. The efficiency increase is determined as the most fundamental IS benefit through a survey. The prediction of the efficiency increase is based on four factors, namely the structurization level, beneficiary level, information utilization level, and information gain easiness level. These factors are verified through a case study. In addition to considering these four factors, the strategic importance of each management process and the relative importance of the four factors are incorporated into the calculation of the efficiency increase. Finally, the DPEM is expressed in a mathematical and process form to reflect the condition of the precedent IS adoption. Through another case study, the validity of the proposed DPEM method is verified for prioritizing the construction management processes for IS adoption based on the expected IS benefits. Ed: highlight - while the original is acceptable, the edited version is more fluent and legible. Further, DPEM is capable of considering more information than the experts are able to consider.