What a mess.
In addition to @Randy_CA’s comments, think about the electric panels and meter loops you might have to upgrade if you can replace these units. Check with the city on the code violations as a lot of the homes could be condemned. Confirm you can get the insurance you need as there seems to be increased liability for the owner. Water and sewer lines in parks like this are commonly end of life, and a large capital expense. How’s the gas out there?
You can still find some 10 and 12 foot wide homes, but not often. Might need to resort to Park Model RV’s, if allowed by the city.
I would not consider lot rent income for any home that, if abandoned, could not be reasonably repaired, and might also deduct a couple grand on top of that to throw it in a dumpster.
Once I had a Park under contract in San Antonio that were all POH. There was a 5K offset for each home without a title. None of the homes had titles. We couldn’t work out the difference because the Seller was going to have to pay me to take the Park.