First and foremost... get the permit to move it.
They might give you a list of requirements before it can be moved.
Different localities have different regulations about how and when and if a permit is issued.
A few years back I was staying in a multi-use park for 2 months that had some park models on rented lots long term. The elderly owner of a park model died, the kids showed up to claim it, either they have to pay lot rent or sell it or move it. One of them had land and wanted to move it to use for guests. To their shock, they couldn't get a permit to move it at all, so they ended up eventually selling it as is where is. The new owner got approval from management to assume the lot rent and move in.
I am unclear if they were denied the permit or told to do a list of things before moving it that made it cost prohibitive. They just said, they couldn't get a permit to move it, and were selling it as is where is.