Buildings are a major energy consuming sector in the economy. About 35–40% of total energy is used by buildings during construction. The major consumption of Energy in buildings is during construction and later in lighting or air conditioning systems. This consumption must be minimized. Buildings affect land use, energy use, communities and the indoor and outdoor environment. In today's scenario, one of the tools in creating Smart city is Green Building or Sustainable building. Green building is the practice of designing, constructing, operating, maintaining, renovating and demolishing buildings in ways that conserve natural resources, reduce pollution and are environmentally responsible. Green building concept is expanding around the world. Use of sustainable principles in buildings can reduce these impacts and also improve working conditions and productivity, increase energy, water, and material efficiency and reduce costs and risks. Sustainable buildings can be showcases to educate people about environmental issues, possible solutions, partnerships, creativity and opportunities for reducing environmental impacts in our everyday lives. Successful green buildings leave lighter footprints on the environment through conservation of resources. In other words, green building design involves finding the delicate balance between homebuilding and a sustainable environment. In the developing countries like India, poverty alleviation can be effectively achieved by conservation of energy and creation of employment opportunities.