Latest Answer: A Green Building is a building which incorporates several Green features from sitting to design, construction, operation, maintenance, renovation, and demolition. You can ask the developer of your apartment the resources or materials he used for building the apartment. Indian Green Building Council (IGBC) Green Homes is also a rating programme developed in India to rate green buildings exclusively for the residential sector. If all the criteria for green building is met by your apartment then it will gain a green building status.