In the quest for sustainable development, achieving Net Zero Energy (NZE) in building design is paramount. The purpose of this study is to develop a Net Zero Energy Building (NZEB) that combines sophisticated building materials, solar energy systems, and intelligent passive design techniques in a way that is both cost-effective and harmonious. This study carefully assesses the suggested NZEB’s energy performance using advanced software simulations, guaranteeing that it complies with relevant building and energy codes. The results highlight NZEBs’ economic viability and underscore their enormous potential to significantly cut energy use and carbon footprints while advancing environmental sustainability. As urbanization accelerates throughout India, this project highlights the critical need for sustainable construction techniques in the residential sector. This paper aims to contribute to Sustainable Development Goal Seven (SDG 7) by focusing on affordable and reliable energy sources. By emphasizing the essential role of solar energy systems in climate change mitigation, the study provides vital insights that will help to enhance NZEB practices. Finally, this paper not only lays the path for a greener future but also acts as a model for building designers and policymakers who want to construct energy-efficient living spaces that fulfil the needs of modern urban life.