This morning, I happened on a community here, in Arizona, that is full of dilapidated pre-HUD mobiles on single lots. A mobile lot with utilities in (water, good septic, electrical hookup, and propane tank or natural gas connection) and a dilapidated pre-HUD mobile will bring $30,000-$45,000. For $30,000 the mobile can be demo'd and replaced with a newer to new Mobile and rent for $800/m for a single wide to $1200 for a 3BR double wide.
These are preferable to MHP lots because of privacy and space. I am interested to see if anyone else has seen this gentrification of manufactured home communities.