I made one comment on BP about lending in NV. and promptly got a nasty gram from the state of NV.. reminding me I was not licensed there and they went on to say we see you are licensed in Oregon but not NV do not do any loans in our state..

I'd call insurance before having any sort of plumber to come do any repairs.

The property manager should be involved before you buy any property to give input on due diligence, how to increase income and reduce expenses, and to make repairs or improvements to maximize occupancy.Excellent property management is critical to your success before, during, and when planning to sell or refinance.To your success!

Handle a few properties for other owners, minor repairs, find new tenants, and rake in 10% .

Not necessarily turnkey but should need minimal repairs if at all

Quote from @Dan Grove: Some combination of cash to seller, closing costs, repairs, construction, paying off arrears, assignment fees, commissions.   

I thought I could solve the vagrant problem by buying and repairing the buildings.

That aside, If it were me I'd get a professional estimate of what repairs would cost, and make the decision to keep or sell based on that. 

I've had a lot of large repairs in the past year that just kill the cash flow.

Renting out mobile homes can be a great source of cash flow but they’re notorious for being damaged significantly by tenants and tend to need a good bit of repairs before renting out to the next tenant.