Mukesh Ambani's $2 billion home is world's most expensive private property, says Forbes

Needless to say, Antilla smacks of opulence. While six floors of the building are dedicated to exclusive car parking, one floor has been made solely for car maintenance.

An entire floor has been dedicated for a "large ballroom with 80 percent of its ceiling covered in crystal chandeliers," the report said, adding, "It features a retractable showcase for pieces of art, a mount of LCD monitors and embedded speakers, as well as stages for entertainment."

"The hall opens to an indoor/outdoor bar, green rooms, powder rooms and allows access to a nearby "entourage room" for security guards and assistants to relax," it said.

One floor, the "entertainment level," comprise a mini-theater with a seating capacity of 50 people and a wine room.

On the "health level," local plants decorate the outdoor patio near the swimming pool, healthclub, gym and yoga studio. "The floor also features an ice room where residents and guests can escape the Mumbai heat to a small, cooled chamber dusted by man-made snow flurries," Forbes said.

Once complete, the Ambanis will also be able to enjoy four floors of open terrace garden. "Gardens, whether hanging hydroponic plants, or fixed trees, are a critical part of the building's exterior adornment but also serve a purpose: The plants act as an energy-saving device by absorbing sunlight, thus deflecting it from the living spaces and making it easier to keep the interior cool in summer and warm in winter," the report continued.

"An internal core space on the garden level contains entertaining rooms and balconies that clear the tree line and offer views of downtown Mumbai," it said.

Besides all these, there are two floors of glass-fronted apartments for guests, while the top four floors, with a panoramic view of the city and the Arabian Sea beyond, are expected to be for Mukesh Ambani, his wife Nita, mother Kokilaben and the couple's three kids.

The family currently live in a 22-storey tower in Mumbai, which the family has spent years remodeling to suit its needs.

And, the topmost floor will serve as an air space level which will act as a control room for helicopters landing on the three rooftop helipads above.