Style traditionally has been studied by architectural critics and historians to observe the characteristics of certain forms produced by designers. They concentrate on the interpretation of the social, cultural, and historical context of distinctive expressions embedded in forms to differentiate styles. In this study, style is interpreted from forms of artifacts as well as from a design-processes point of view. It is proposed that a design product is a function of a design process. The style that exists in a design product is caused by repetitious applications of some factors involved in a design process. Frank Lloyd Wright's design works are selected to provide supporting evidence. Results show that styles can be identified by common features caused by the replications of the same sets of design constraints, principles, and methods and the same fixed sequences of design procedures. Thus, it is argued that styles are results of consistent acts in design process.