This is so that the lender may demand full repayment if a property with a mortgage is transferred into an LLC and a due-on-sale provision is triggered.Before putting the property into an LLC, make sure to check with your mortgage lender.

You can learn a lot if that is available before even making an offer.Also if you can figure out the name of the HOA a lot of times you can find the HOA website online by googling it.

I will do online banking so long as they can handle my rental property break downs.

I am seeing some delinquencies that show foreclosure, but the numbers don't make sense unless there is some sort of ground rent or non-mortgage loan tied up with the properties.

A private loan or rich uncle is another example.The alternative with a mortgage is that you have to BRRRR sequentially, not in parallel. 

Your DTI for a mortgage is based on the mortgage payment.

The “due on sale” clause does not, in fact , legally CAN NOT, prohibit a transfer of property where the mortgage lien is not paid off.  

Cost per month, because that's how it is paid by the home owner.This means the total cost per month is both the energy bills AND the mortgage. 

I need to get another mortgage and get back into a single family home.

The quality of the mortgages is higher.