Ah, currently no possibility to move buildings, sorry. That is actually a harmful thing with refinery and something you couldn't know.
I think I will solve that so that next to landing pad is not allowed for refinery. I will think about the building moving. Currently it is a bit gimmick feature (although quite a fun) to position the buildings, since they don't matter much (well, for turrets you could position them close to landing pad, then they would be most useful for meteor missions).
I would love to find some simple strategy that would make some more meaning for building positioning and then move-feature would be useful too.