Excavate a wine cellar
Obviously, for most house hunters, a wine cellar doesn't make the "gotta have it" list. But what if you could add one into an existing home?
That's where Spiral Cellars comes in. This company, which is currently expanding throughout the U.S. and Canada, excavates a spot for a prefab concrete wine cellar, with handy trap door access.
The cellar relies on the surrounding earth for insulation, and a built-in air flow system means it doesn't need any electricity to maintain the temperature.
Their wine cellars can store up to 1,600 bottles.