BackgroundGiven the increasing rate of climate change and the inextricable linkage between human and environmental health, it is vital that new methods of design be explored—especially those that support symbiotic approaches to health, among all demographics. This study is exploring how to design built environments for human flourishing, using a novel concept—eudaemonic design. This concept centres on a philosophical premise (Aristotle's concept of eudaemonia) and leverages a positive psychology approach. MethodsThe research methods are virtual and designed to visualise ideal health and wellness-supporting environments. The study explores eudaemonic design, building on a methodological approach that values co-designing with older adults as an approach to designing for all. The study is being conducted with two Australian cohorts, beginning in January 2021 and scheduled to culminate by the end of 2021. Cohort 1 comprises nine older adults who are aged 65–80 years, living alone, interested in ageing in place, and familiar with technology (to accommodate market trends that relate to using technology solutions in homes—eg, smart home technology for physical and digital solutions). Cohort 2 comprises nine design practitioners (professionals with a design-related degree and 5 years' work experience) to assist with visualisation exercises for an inclusively designed future. The groups were recruited via older adult-focused social and design-focused professional organisations in Australia, respectively. The qualitative output data resulted from cultural probes sent via Australia Post to cohort 1 and from a combination of virtual interviews and co-design workshops attended by all participants. Data are being thematically analysed, coded, and reflected on by the researcher. Ethics approval was granted by the university and participants signed consent forms. FindingsData collection is now complete, and analysis, design, and validation by the researcher and participants are underway. Initial results indicate how the eudaemonic design approach enables occupants to conceptualise a home environment that enhances health, fosters a deeper connection to place, and supports their flourishing selves—prompting feelings of gratitude, motivation, and environmental stewardship—and to appreciate why having a home that does so is important. InterpretationInitial findings could promote improved built and natural environments that influence improved human health and wellbeing and might result in a symbiotic cycle of health curation. Developing a eudaemonic design approach could influence human and environmental wellbeing across user groups. This opportunity has the potential to result in flourishing lifestyles and healthier habitats for current and future generations. FundingNo external funding.