1. A green building in incorporates environmental conservation into every stage of the building construction and focuses on the decision, construction, operation and maintenance phase. 2. In green building concept multidisciplinary team of building professional work together from the pre decision phase through post occupancy to optimize the building for environmental sustainability, performance and cost saving. 3. Green building in corporates superior air quality, abundant natural lights, access to view and noise control which benefits building occupants, making these building better place to work or live. 4. Green building operations promote material as well as water recycling in their operation. 5. Energy efficiency is one the most important factors in green building concept. 6. Green concept also stress on water conservation by implementing more efficient water delivery and recycling system.