That's a classy house: clearly an architect designed one-off and beautifully maintained. That central stone stack makes me think of Frank Lloyd Wright. Someone spent a fortune on it and had the nerve not to tinker and extend and muck it around and ruin it. It's expensive for the area, but that's because it's special.
Lovely to see others who don't believe you need to rip everything out and 'modernise' every few years in order to keep up with the Joneses and all the other sheeple who bankrupt themselves to stay 'current'. Dare to be original.