Retrofit involves modifications to existing buildings that may improve energy efficiency or decrease energy demand. In addition, retrofits are often used as opportune time to install distributed generation to a building. Retrofitting refers to the addition of new technology or features to older systems before effect of earthquake or after effect of earthquake which are built without considering lateral load .retrofit, the improving of existing buildings with energy efficiency equipment Mastermind engineering consultancy is providing retrofitting services of different building with its own engineering team by inspection, analysis & design with well-trained skilled and unskilled labor under direct supervision of engineering team.