I wish the website any clear information at all about how he moved the blocks (or the barn?!). Is he just lifting and then sliding them? Would appreciate more information if someone knows where to find it.
At 2:08, they show the counterweights and one of the pivots he used for moving the barn. (It's a "pole barn", so it has no concrete foundation. His webpage says they had to add about 50% of its weight again in reinforcement so that it would hold its shape when moved this way.)