I misinterpreted your idea at first: Could the building rest on a set of screw piles? [1] Presumably they would get stuck, but perhaps you could heat them when

I misinterpreted your idea at first: Could the building rest on a set of screw piles? [1] Presumably they would get stuck, but perhaps you could heat them when you wish to move. The building could then be a self-jacking snow anchor. [1] https://en.wikipedia.org/wiki/Screw_piles https://en.wikipedia.org/wiki/Screw_piles