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For effective construction project management, the integrated construction data operation is an essential element. Several previous researches tried to develop integrated systems, but those systems needed work process innovation as a precondition. However, those previous systems required radical changes in construction work process and scope, which does not seem to work in actual construction system. Considering the necessity of the integrated system and the problems of previous studies, this study developed the concept of the growing construction object(GroCO) which is based on the work scope and its related data in each construction phase. Through the concept of the GroCO, the integrated data model for each construction phase was developed and the application method was proposed.