Bhargav’s PhD research empirically evaluates the application of Passivhaus standards in UK care settings, focusing on indoor air quality and overheating, particularly for the ageing population. Despite the known benefits of Passivhaus design for residential buildings, there is a lack of research on its impact in non-domestic buildings like care settings. This research aims to bridge this gap by assessing indoor air quality parameters, overheating risks, occupant comfort, and health outcomes in Passivhaus care settings. Using a mixed-methods approach that combines quantitative environmental monitoring, building performance simulations, and qualitative surveys and interviews, Bhargav’s work will develop evidence-based recommendations to enhance the well-being of residents in these settings. The findings will inform future sustainable building practices and policy-making for care settings, ensuring they are both energy-efficient and conducive to occupant health.