What was wrong with that?
I saw a house built around the trailer.
The trailer was still inside!
If I could only buy a trailer I often wonder about adding onto it, with presumably two stories.
I guess that when I could afford to add onto the addition I replace the original home.
If the property is big enough you could build a house on another part, but then you might end up with a house on a weird location on your property.
Move the mobile home out of the way, connect it there, and built a site-built home in the original spot?