Green building, is a topic that we all should put our attention. Because we have been building for a long time on this planet without taking in count the environmental impact that we created. We are now on time to change our attitude to the environment and we need to know and support every idea or actions that are being implemented to help us to live in harmony with nature. Not only for us but for future generations and for the planet. I will review literature to approach this topic and I will be focusing on: reducing environmental impact, energy, water, materials efficiency, waste reduction and others.