Rough numbers from my experience are with a valuation of X, a cellar would cost .25X or so to construct. Yes there is maintenance and such but if you build it right you can minimize that. If your wine cellar cooling unit goes out just open the door and your house will keep it at a reasonable temp. Wines are a lot more stable then people are lead to believe.
Wine is art, if you set up a cellar correctly, it can be a focal point not just showing the bottles but the labels and the art of those labels.
Wine is art, if you set up a cellar correctly, it can be a focal point not just showing the bottles but the labels and the art of those labels.