This research develops a preliminary system prototype of construction data warehouse of a construction industry application to provide the construction manager with electronic decision supporting information. Construction data warehouse technology is a contractor-focused concept that provides electronic information analyzed from the separately stored database by management dimension, management subject, and data warehouse technology modules. First the authors reviews the characteristics of data warehouse technology and reviewed the conceptually designed architecture of previous study, then propose the architecture of construction data warehouse system and real application alternatives of each technology module to confirm the construction adaptability of the data warehouse technology through a case study.