Also, you can try going around the parks to see if there is any work being done to any mobile homes and/or "For Rent" or "For Sale by Owner" signs which may belong to other mobile home investors in the area.

As you pointed out, even in commercial real estate where it rightfully belongs cap rate is overrated.

However, based on the fact that their kids are in a school where they are happy, the low inventory of houses in our area, and the fact that many landlords don't allow pets, leads me to think they will be long-term tenants, which is what I'm looking for.  

What I know from from looking up some info on YouTube is 1- you look up properties that have been foreclosed on2-Make sure that in auction the price sold a lot higher than what the house used to owe. 3- Contact the old owner of the house and tell them that the county has surplus fund for them ( if it was foreclosed on for $50k and it sold in auction for $75K- $25k belongs to the old owner) 4- by helping the owner get the money that he is owed you can charge a small fee?

My vague memory is that her deposit covered one month's rent and it took another month or two for her family and/or pastor to remove her belongings. 

The house belong to a friend, it is located in the DC area.

If you can't get approved, that would be a good option too as far as the rehab loan just rehabs can be long but you can do it!

Parking your car on property that belongs to someone else (and you do not know each other) usually results in an argument at least.

Legally you can still have airbnbs, but the rental period must be longer than 30 days for the ADU.

If the house is vacant and the utilities are turned off, it won't be long before someone figures it's worth breaking into.