Does the building have a floor......was it constructed right on the ground?........If so they're easy to move with a quick tug of a "jeep" or a come-along and a stout tree..............For the short turn and move almost any 2x material will provide the runners to slide(or the pipe if available)......use a car jack to raise the leading edge of the building......and insert runners
If it has "posts" into the ground then an alternate move would be to strength the building and cut the posts at the ground level.......and proceed as above........