is it possible to disable lift-off on buildings? if not, what is the best thing i can do to prevent players from moving them? ( i have many buildings in far positions from each other )

You place a location over your building, and modify the flags in the location to detect air units. When a person brings a building to that location, it will obviously be in the air, so remove and place a new one at that location.

li la lifting

I just realized an issue with that topic's final answer, the stacking thing, if two players were to lift off at once, the stack would only work for one of them.

While a possibility I think the likelihood of that happening is very small. The players would have to actively be trying to lift their buildings. Otherwise, the method seems like a good one to use to prevent accidental lifting.