They are 3/2 16'x80' Mobile homes.

I know they would be worse off refinancing at today’s rates even if they could find an alternative lender able to lend on older mobile homes.

Would the buyers/borrowers be purchasing with the intent of putting a mobile home on the property and making it their primary residence?

Hiring someone to do the work will likely cost too much (I would charge a small fortune, it's an incredible amount of work) and doing things as cheaply as possible will bite you in the *** later when you start having issues with your own shoddy work and/or materials.

Out of state is usually easier as mobile notary will often work.

We currently use Hospitable for 12 properties, and it's working fine, no major issues, and I know they've been expanding with new features.

She walked away with $1,500 in hand, and we salvaged the deal, netting $8,500 in the process.That deal reinforced two crucial lessons: first, title issues can create unexpected hurdles, even in straightforward transactions.

Spoiler alert- Phx is quite a saturated STR area, and many STR's (although some are doing great) are having major occupancy issues. 

The mobile home I would only want to keep for a few years to live in before building a new home. 

not sure they will do it for mobile homes though.