For this price, i'd have expected, no demanded at LEAST a 3 car garage and at least 50 metres away from the next house!
No way, he wants his neighbors so close they can peer through their windows and see his £50,000 front door, £100,000 fireplace, and £750,000 staircase.
So if he sold all his assets and put the cash into a simple bank account earning 5% he would make £162,500,000 per year, or just a measly £100 million after taxes.