Building conceived in multiple levels with least interference to the existing mountainous terrain, so as to merge with the same. Oriented to receive minimum radiation from sun, yet allowing maximum cross ventilation so as to be least dependent on electricity. Landscaped courtyards in between the blocks to create cool pockets of air to circulate into the building. Use of energy efficient lights and efficient sanitary fixtures. Special emphasis on rain water harvesting by the creation of a rain water reservoir covering an area of more than 50 cents.