2. Antilla – $1 Billion
This impressive homestead located in Mumbai, India would actually be the envy of some office buildings due to the amount of space it contains! This 27-story residence occupies around 400,000 square feet, boasts a total of six underground parking levels and three helicopter pads. A staff of 600 is responsible for keeping this gigantic home clean, well-maintained and operating smoothly. The owner is Mukesh Ambani, who happens to own the second-most valuable company in all of India, Reliance Industries, which is involved with energy production.