Plenty of Spartan Mansions around. Most are TRASHED as they were so big, long and hard to move/tow that they become stationary trailers parked all over the place. Lot's of em in the South however the condition is usually TERRIBLE. Parts are expensive and repair can be difficult.
You will save LOT'S of money by purchasing a nice trailer to begin with versus rebuilding a trash trailer.
The big problem will be finding a NICE "Mansion" trailer that the seller has a realistically priced. The few NICE "Mansions" I have seen for sale
the asking price did not match the condition!