Just venting

Years ago this would work but with computers and such today... Who knows.
A neighbor found himself in a similar situation. His mobile home had rooms added on over the years so it was difficult to tell it ever was a mobile home. His wife needed surgery so he needed to borrow money against his real property.
The bank manager told him..
"Remove the axles and get rid of them. Put the title to a mobile home in a shredder".
Have it appraised as a house ( permanent structure ), then on to the bank.
Keep in mind that if it works , the cost of the appraisal is a one time fee. Increase in property taxes and home owners insurance cost goes on forever.