I too am moving my DH to land that I purchased. It has been really difficult to find out any info! I did check to make sure mobiles were allowed on the land we bought. And that the improvements were there and hooked up. The thing I have the most questions about is the actual moving the house part. I downloaded the UG Govt. PDF. I have called several mobile home movers, and gotten wildly different estimates. All are sight unseen (and site unseen too. :-) but finally I did find one mover that gave me a lot of advice...such as making sure that the estimate included things like the permits, and that the movers had a permanent crew, not just day labor, and that they were familiar with the brand of home you have. There are a lot of little details, and where I live (Texas) you need to pay the property tax on your home before you can move it. Also, the park has a lot of rules about moving the home. Yikes! Still, in the long run, it will be better for us to move our existing home than to sell at a loss and buy another one. So far. :-)
Anyway, my two cents here. I would appreciate any advice or thoughts anyone has too!