The bank does have programs known as CIP, or "Know Your Customer" rules and they are heavily regulated to stop money laundering.

I think you can't get this credit on an investment property but if it is your primary residence, can you apply the credit on the investment side of the duplex?Would that be something you can use 'twice' if that is the...

We are a custom home builder and can price a new home out much easier than a remodel. 

That usually only applies if you will be bringing customers to your home.

I have customers come into my business and pay by credit card.  

As for his customer service I think there is room for improvement.  

We use QB for accounting and Rent Manager for PM (I often feel like it uses us - although there customer service reps are great).

Without an agreement: the Buyer is your customer and the seller becomes your client because they are the one paying the commission. 

And then when the distributions got paused tell the same customers, who really needed those funds for retirement, they were being short-sighted to focus on de minimis cash flow and should wait for the real money to come in via appreciation?

I've looked into Guesty (which seems too expensive for what I hear to be awful customer service), Hostaway, Owner Rez, and Lodgify.