Look, I'm all for sustainable housing and eco-building, but we've got to be sensible here. Spending $15 million on a house shaped like a bee hive because it's "eco friendly" is kind of insane. Sure, it's sitting on a beautiful estate with 550 acres of land that's overflowing with nature's bounty, but come on. $15 million?
For your money you'll get a house that produces more energy than it uses, which will save you money on your monthly utility bills. Not enough to make up for the initial price, but still. It'll use geothermal heating to get the job done, which is a unique aspect to a private home. But seriously … $15 million?