What documents do they require, what credit scores do they allow, how do they verify previous rental history, etc.?

I like to go with the motto, Trust but Verify.

@Chris Magistrado if she knows what she's doing and consistently keeps a sharp eye on what's going on it's possible.Should have local "inspector" that can verify what's done and how well, before paying contractors.

Verifying last 2 years of rental history very important!

Given all your data on historic pricing, average length of stay, and pricing at the 25th percentile, please let us know if you're able to push up the VRBO chain to speak to a Supervisor (or equivalent) and have them verify the data that supports your position.I can share that calling the VRBO support line: 877-202-4291, identifying yourself & property ID, and requesting a Supervisor politely and repeatedly, can lead to different outcomes.

The other info sounds great but I would verify the assumptions I mentioned because if they’re off, it throws everything else off.  

I have pulled a permit for removing a fireplace, but probably would not have but I had a significant remodel going with permits and did not want hassle of him making an issue of removing the fireplace (the inspection for fireplace removal consisted of only verifying gas cap was in visible location, he did not even spray it).

Verifying last 2 years of rental history very important!

I recently came across 1 acre asking for 314k in a very good residential and growing location, so the current owner has added 4 manufactured homes with 4 electrical meters, 4 septic tanks and only 1 water meter for all 4 homes, the homes are sitting on partial slab and partial pier & beam, he also added 2 storage sheds approx. 380sqft with the intention to make them ADUs they are still only the shell so I would have to get those ready to live in, so currently the 4 manufactured homes are being rented and bringing in 2800k a month, 3 of the homes are needing some TLC which could increment rents and possibly get me at 3600k a month, also being a 1ac lot this still leaves about 12,000sqft of raw land where you could build etc.So that is on the good side now the things I did not like so much, the lay out is poorly executed to where it makes it looked crammed up and not professional but it could be fixed.Another is that in reality there is only 4 livable units so that qualifies under a conventional loan but since they're are 6 units on the property the banks are wanting to take it as a commercial so we would have to move out the 2 storage sheds out in order to close as conventional.Another concern, technically you are only allowed to have one manufactured house or single wide in your property according to what I know but I know it could change according to zoning which I will investigate, so my question is has all this been accounted for and if so how can I verify it so it wont leave me in a bind further down the road, I currently asked my agent for the appraisal of the property to see if that might verify.Any recommendations?

Fannie Mae will allow you to transfer the deed to an LLC if you decide to try to go the conventional route, but the loan would still be in your names and you'll need to pay a title company a second time post-closing to do this  for you. 3) I can't speak for the area so no comment there4) If you're self managing, make sure you find vendors you can trust in the area since you won't be able to easily verify if an HVAC guy, plumber, etc. is trying to rip you off and tell you to buy something you don't actually need. 5) Make sure you have clear alignment of goals and a clear operating agreement that spells out what to do if those goals start to not align in the future since you'll be jointly obligated to these properties.