A green building is a building which decreases or removes negative effects on environment  by designing space and using appropriate materials and it can have positive effects on our natural environment.

Green buildings protect our valuable natural resources and improve the quality of our lives.

The special benefits of green buildings are as follows :

 - Efficient use of energy, water resources and another resources.

- Using reproducible energies such as solar energy.

- Reduction of pollutants and wastage and feasibility (possibility) of reusing and recycling.

- Improving quality of  indoor area’s air

- Using none toxic and abiding material

- Reducing occupants stress and fatigue