President of India laid foundation stone of new residential units in Presidents Estate today The President of India, Shri Pranab Mukherjee laid the foundation stone for a cluster of new residential units in the Presidents Estate today (July 24, 2016). These residential units in Block No. 13 of Presidents Estate will have type-II and type III quarters meant for staff of the Presidents Secretariat. The special features of these units include insulated roof slab and outer walls, rain water harvesting, recycling of waste water and solar water heating etc.