At that point I might just call it good enough.

I would advise people to use the Dave Ramsey method to get themselves in a good enough position to where they have no debt and then have enough money to put down at least 20% on a nice cashflowing property, and then rinse and repeat.

It was good enough for my needs.

I split the difference with the tenant since she's been there a couple years and is now a single mom though she originally was with someone when moving in and now the lease is all on her only.Anyways, she's a good enough tenant in that she doesn't bother me for trivial stuff.

Yes, a picture and their word will be good enough, if you do not have any counter evidence.

What if person C has been supporting a family, while paying back college loans (undergrad and grad), owns two well-used cars and an average suburban home, all the while making a good salary but not good enough to have surplus for down payment? 

I figured hard money is cash I can get if the deal is good enough. 

Day 31 or 32 is not good enough.

If you even have an email or text from them that says when they're moving out - that's good enough for written notice.Can you give them notice yourself at this point, as suggested?  

Double check and laws in your state, but I am pretty sure the fact that it was professionally cleaned is probably good enough... also... if there were major health concerns Fannie Mae would have had to remediate it before they were even able to sell (ever see those really ugly rudimentary porches that you can tell were slapped on???