The HOA fees alone make this obstacles almost impossible to overcome. 

Since there are many providers in many markets, it is impossible to make a blanket statement.

Some people say you cannot get one against investment property, and it *is* more difficult, but not impossible. 

It would be virtually impossible to hide from my tenants that I am the owner unless I dealt with them personally under some kind of assumed name or put all the properties in an LLC.But I introduce myself as the OWNER, my lease identifies me as the LANDLORD, and I conduct myself as if the buck stops with me.

While certainly not impossible, it would be pretty strange to have a $400,000 difference between two otherwise comparable homes when the cheaper of the two simply needs some paint and other cosmetic touches. 

I just dont know the rules when it comes to mfh’s in parks and I was watching a video saying it can be nearly impossible to sell your flip if it’s in a park.

I think it is just one of those things that have such a high level of complexity, that it is impossible to predict.

You're right that it's impossible to screen for some of these things, and frankly many potential roommates will be turned off by the intensity of the questions.

Currently looking for a rent to own or owner financing but it seems impossible in my area.

I know in Philadelphia there's some additional rules (it's been awhile since I looked into it) which makes it impossible to get a lender's title policy for 3 months if I remember correctly.