You can pay it off or refinance at anytime, with no penalty.

Cash-Out Refinance: A HELOC might be a good option if you need flexibility to fund repairs or invest in another property, as you’ll only pay interest on what you use.

I will have POA and will conduct a 80% cash out refi, which the loan proceeds will then be paid to the seller and the title would then finally be transferred to me. 

Don’t forget heloc, DSCR, 2nd on primary, borrow from retirement accounts, credit card cash advance, property reserves, home improvement store credit, etc etc.

Refinance into a debt service loan.

@Steven Catudalthe 'no cash flow on a BRRRR' is typically just because you are boosting the ARV and then taking out the maximum amount you can on the refinance, often using a DSCR loan with a higher rate. 

You know those signs that say "we buy houses for cash" call them and say you are investor looking to buy a flip. 

My experience has always been better with a local lender.With that said, I am reaching out to David Greene's The One Brokerage about a refinance.

Most of the investors I work with are looking at doing a cash out refi every 2-5 years, depending on the market.  

A landlord who is not over-leveraged to begin with may simply refinance their loan even when prices go down just to re-amortize the loan and lower the payment to preserve cash-flow.