There is an absence of fitting research methodology in construction management research. This has prompted a shortage of theories that are exceptional to the field. Thus, this paper proposes confirmatory sequential research design as a research paradigm and methodology for theory building and testing in construction management research. The method makes qualitative and quantitative techniques reciprocal through a staggered and vigorous interaction. An illustrative course of applying the technique was laid out. It was deduced in this paper that, a confirmatory sequential research design is fundamental for the future and unwavering quality of construction management research. The main contribution made by this paper to mixed method is a systemic mixed method-based research design that the paper presents.