Though personally, if I was doing a new home I'd do it like so:
That would be amazing to live in. I wonder what that would cost a person.
Well, doing a reinforced concrete shell is pretty inexpensive nowadays - you can do one for about the cost of a regular home. So just figure a normal home that size for the base cost. But you also have to figure in that there's a big fucking hole that had to be dug and having holes dug is expensive. You'd just have to hope that you have some friends that own backhoes and such that wouldn't mind helping you out if you wanna cut some costs.
Beyond that, you have to factor landscaping and I'm not sure on that but I wouldn't have anything real. The grass, garden, and even trees would be fake so there'd be very little maintenance required. The only thing I'd have that would be real would maybe be trees lining the straight part of the driveway from the walled in gated entrance since those would be a lot cheaper and pretty much be no maintenance after planted.
Then you have to consider the decor. I'd do something like so...
Grand staircase like this, but with a lower ceiling and a different taste in statues/paintings:
Main decor like this with more of a deep red, albeit minus the angels (and much less tall walls of course)... I'd have beautiful girls instead:
The front would look fairly similar to this, again minus the angels and a little different:
Perhaps some decor like this:
That should give you a pretty good idea I suspect. The floors wouldn't be marble/limestone or whatever, they'd just be treated concrete to look like that type of material as per the rest of the house. A lot of the fancy design stuff could probably be 3d printed in plastic then cast in brass/bronze and the statues could just have 3d printed plastic molds made from models I could easily make & pose myself then just have them filled with some steel reinforced cement which I imagine would be fairly inexpensive in comparison to actually buying highly detailed life sized statues.
So, I dunno. There are a lot of things with the way that I'd do it which would make it substantially cheaper than it looks but it wouldn't really be a drop in the bucket either. I'd say like ~$800,000 or so, given that you could find friends to help you out and do stuff for cheap and such, and cut out the super expensive stuff for instead fake stuff that just looks really expensive. Google "concrete marble stain" for instance. Things like that could really cut down on costs a lot. Then again, I'm no architect so I could be way off with the price. It's just a rough uneducated guess on my part.
