Green building plays a central role in global efforts to mitigate and adapt to climate change because it transforms the way structures are planned, constructed, and operated in order to reduce environmental harm while enhancing resilience to climate-related risks. Buildings are among the largest contributors to greenhouse gas emissions due to their heavy use of energy, water, and materials across their life cycle. The choices made during design and construction therefore have long-term implications for carbon emissions, ecosystem health, and community well-being. Green building aims to reverse this trend by promoting environmentally responsible and resource-efficient development that aligns with climate goals. Its importance lies not only in reducing the carbon footprint of buildings but also in preparing communities to withstand the impacts of increasing temperatures, erratic rainfall, and extreme weather events. As mitigation and adaptation become simultaneous global priorities, green buildings emerge as a key pathway for sustainable development. The importance of green building begins with its strong potential for climate change mitigation. Buildings consume large amounts of electricity for lighting, heating, cooling, and appliances, much of which is generated from fossil fuels. By improving energy efficiency through advanced insulation, efficient windows, natural ventilation, and low-energy appliances, green buildings drastically cut energy consumption and reduce greenhouse gas emissions. Renewable energy systems such as rooftop solar or geothermal heating further strengthen this advantage by replacing fossil-fuel-based energy with clean, sustainable sources. Over the life cycle of a building,