Current technologies for ambient assisted living leave underexploited that social interaction is key to human wellbeing. Me-to-we design provides a blueprint for enriching such welfare technologies with social interaction. We present the five stages of me-to-we design, illustrate how it may transform a common class of welfare technologies, and discuss the distinguishing features of me-to-we design. These features include scaffolding social interaction around an activity and supporting transitions among the five stages. In contrast, most current welfare technologies support only some of the five stages and, thereby, either bypass social interaction or presuppose that social relations already exist. Me-to-we design offers a blueprint for building social relations stage by stage if they do not exist up front. It is for future work to validate whether the blueprint in practice delivers welfare technologies that are enriched by its profoundly sociotechnical approach.