Stricly speaking, you'll need a million Dollars.
But the question is a bit like "How long is a piece of string?"
My best answer is: House, car AND a million dollars.
(... and a yacht, 10 other cars, 5 other houses, a butler, a limousine, an island of your own, your own football team, and maybe another yacht in case the first one is dirty or something
, and ...)