Concerns about building energy conservation are rising, especially in the UK, where residential buildings contribute significantly to CO2 emissions. The Passivhaus Standard has become a focal point, prioritizing minimal heating energy use, indoor comfort, and superior air quality. However, integrating Passivhaus principles into smart city development faces policy challenges that require alignment, incentives, and regulatory support. While information and communication technology (ICT) is crucial, obstacles remain in incorporating high-efficiency standards into existing urban infrastructure. This highlights the importance of Passivhaus in creating a sustainable housing future. This article explores the evolution of UK policies regarding building energy conservation, presenting a systematic literature review on the integration of Passivhaus within UK smart city development. It highlights energy efficiency, policy implications, and challenges related to urban density and heritage conservation. The study emphasizes the importance of community engagement and stakeholder collaboration for successful Passivhaus implementation, advocating for a context-sensitive approach that includes educating residents and involving them in planning. Additionally, it identifies a promising synergy between smart city technologies and Passivhaus principles, aiming for more livable urban spaces. The research provides actionable management guidance for urban development stakeholders, stressing the need for strategic incorporation of Passivhaus Standards to achieve sustainable urban futures.