He gave me a $50K business line of credit and his staff has always been easy to work with when I simply call them.

@Travis AndresIf you do not have other assets to secure against - your best bet would be a private lender willing to take risk of essentially providing an unsecured loan.There are people out there that do this - expect very high interest rates.

Looking for some creative advice that hopefully minimizes the tax bite.My business partner and I own two houses free and clear in our LLC.

The mortgage business is notoriously difficult, investor and lender guidelines (bank rules) are complex and vary among investors, generally speaking, brokers are not lending their own capital and the liaison on concierge gate keeper. 

If you decide to move into that unit once you close though, that's your business.

We Google the business and verify that the number they gave us is accurate and if it isn't we call the listed number. 

This is the least likely thing for people to publish on BP, as finding them is key to the business and promoting them on here will inundate them with calls. 

We will need to mortgage the condo or sell it in order to outfit our home (and my brother-in-laws home) for my in-laws to live privately and comfortably.

My gut tells me I need my own liability protection--I'm in business with Airbnb but don't exactly fully trust them--but like I said, it's difficult and expensive to obtain.

It’s a job/business, not investing 3.