The most expensive home in the world

Mukesh Ambani (Chairman of Reliance Industries and the #5 wealthiest man in the world, according to Forbes) is building a $2 billion dollar house in Mumbai.

27 floors, 400,000+ square feet, 3 rooftop helipads, a staff of 600...for a family of six???

Excessive?

What if he just built a $100 million dollar home and donated the remaining $1.9 billion dollars to charity?

What if he built a $1.9 billion dollar home and donated $100 million to charity?