I also use amex for my business CC.

Are you asking about a real estate license (realtor/agent) or a business license?

Multiple Accounts SetupWill they allow you to open multiple business accounts under one LLC for each series?

Yup a prudent second position lender only does that if they have the cash to pay off the first. lest they get in trouble as you have described.. happens a lot to those who get sucked into it..

But one tool that often gets overlooked in the wealth-building strategy is life insurance - and it can be a powerful asset for your real estate business. 

Or, OP can sinply avoid doing business with anyone who does Sub2 as they're likely a criminal or a con artist.  

I think you would be far better served by just getting a separate bank account to run your business if that's your primary intent on using LLC.

I do love the senior living wing of a business strategy. 

My advice is focus now on building your branding, business and client base in real estate.

@Fiona HumphreyJust make sure the property cashflows if the owner of the business dies and you're forced to rent to a normal everyday tenant.