My suggestion is just to use a standard MAR purchase and sale agreement (P&S) and for the borrower entity put “Andrew Camarda or assignee or nominee” which makes the contract transferable.

Anyone with over a certain percentage of ownership (varies by lender). 

What about putting you on title as joint or as a percentage ownership and calling it a refinance rather than a purchase?

I had a renter of 16 years they just moved out due to a job transfer out of state.

We have an LLC set up for properties but from reading books/BP site and listening to BP podcast, we were under the impression to purchase as individual outside of LLC and transfer into LLC once refi is done.

Think about it....that $25,000 investment turned into over $100,000 in cash flow over two years, buying an additional condo with no cash out of pocket, and transitioning the $400,000 profits into a ownership of a $2MM RV/MH Park!

Just like getting financing through a bank, you take ownership, start making payments to the seller every month for a set term.

LLC may or may not better protect your personal assets if something happen with your tenants and / or with your properties.If you'll decide to open an LLC, your rental properties will need to be transferred from your name to LLC which will cost you money. 

Current or prior ownership of real estate: This is the only current piece or real estate we own.

At what point should I consider transferring ownership to an LLC?