Bel Air Mansion with Car Collection
We're not sure if it's the biggest house in the US. But it is the most expensive. This Bel Air Mansion with Car Collection is a brand-new, over-the-top build that includes absolutely everything. "Everything" encompassing more than just the four floors, 12 bedrooms, 21 bathrooms, three kitchens, massive home theater, and infinity pool with swim-up bar. It includes all the furniture, all the gadgets, all the wine, all the candy, the custom-built glass ping pong and billiards tables, shoes and balls for the bowling alley, and the helicopter. It even includes a $30 million car collection that features a custom Rolls-Royce and a Bugatti. And to help you take care of it all, it comes with seven full-time employees who live in their own "staff wing", ensuring that once you move in you won't need to lift a finger unless you want to.