1. Graeme Hart – $7.5 Billion
Graeme Hart is a business magnate in New Zealand. His journey started from a house in the log to a beautiful villa in white.
Hart is called an undercover billionaire because of his modesty and likeness to maintain a low profile. Graeme owns houses in Auckland and Waiheke Island in New Zealand. He also owns a 58m luxury motor yacht which is a huge tourist attraction.