Green architecture has emerged as one of the most effective approaches for promoting environmental sustainability in the built environment. As rapid urbanization continues to transform many Nigerian cities, including Jos Metropolis, environmental challenges such as increasing energy consumption, depletion of urban green spaces, poor waste management, and climate-related hazards have intensified. This study assesses green architecture as a strategy for achieving environmental sustainability in Jos Metropolis, Plateau State. The study adopted a descriptive survey design using both quantitative and qualitative approaches. Primary data were obtained through structured questionnaires administered to architects, builders, urban planners, estate developers, and household heads, while secondary data were obtained from scholarly journals, government publications, and policy documents. Descriptive and inferential statistical techniques were proposed for data analysis. The study found that although awareness of green architecture is gradually increasing, its practical adoption remains relatively low due to high construction costs, inadequate policy implementation, limited professional expertise, and low public awareness. Nevertheless, the adoption of green architectural principles significantly contributes to energy efficiency, improved indoor environmental quality, reduction of greenhouse gas emissions, water conservation, and urban biodiversity conservation. The paper concludes that integrating green architecture into urban planning and building regulations will significantly enhance environmental sustainability in Jos Metropolis. It recommends stronger policy enforcement, financial incentives for green building projects, public awareness campaigns, and continuous professional training for built-environment practitioners. These measures will promote sustainable urban development and improve environmental resilience in Plateau State. Recent studies from Jos also highlight the value of green plot ratios, green spaces, and sustainable building approaches in strengthening environmental quality. Keywords: Green Architecture, Environmental Sustainability, Sustainable Buildings, Urban Development, Climate Change, Jos Metropolis, Plateau State.