When we talk about the green building, there is a great scope of such buildings and these types of construction projects. Generally, green building means that it is eco-friendly and these construction projects do not impact environment in a bad manner. There are some parameters of the building which improves the condition of an existing building and makes building green. In India, there is a need of green buildings and rapidly the green building projects are increasing and the people are understanding the importance of the green buildings. For analysing the existing buildings according to its parameters, there are some rating systems in the market, these rating tools measures the performance of the building and tries to improve the performance of the building. Today, various rating tools are available like GRIHA, IGBC, GEM, LEED etc. for giving rating to the building. These rating tools have parameters which evaluates the factors of the building and gives credit points to the building and then these gives certification to the building for green building or not.