Although various types of smart objects have already been developed, the use of these devices has not yet penetrated widely into people’s everyday lives. Therefore, we constructed a design framework to increase the pervasiveness of smart-object services. This study consisted of two parts: defining a design space for smart objects, and developing a design framework using the defined design space. First, we analyzed 26 smart-object products to obtain the design space for smart-object services. These products were cited from various research projects regarding smart objects and were used to identify the features of smart objects. As a result, we obtained five dimensions: information acquisition method, perception, information provision by device, information conversion level, and target of service. Afterward, we performed a case study based on the design space, with the mindset of widening the applicability of the case study, and developed a design framework with the design space as the core to increase the pervasiveness of smart-object services. The resulting framework consists of four phases. Based on the application of this framework to other case studies, we then obtained valuable insights regarding the use of this design framework.