Hey Angela!
Happy to shed some light on the scenario here. I am a mortgage lender, and do about 90% of my business on the west coast.
During any type of refinance, even the property is owned free and clear the lender will need to qualify you via the fannie/freddie guidelines.
This being full document loans, paystubs, W2's, tax returns (if self employed or using rental income) assets for reserve requirements.
That being said, i work with a ton of NON QM investors that offer products more directed at investors, or high net worth clients or just anyone who has a hard time qualifying the traditional way. These loans can be DSCR (debt service coverage ratio) where you are qualifying solely based on cash flow, bank statement loans, asset depletion, or asset qualifying. In short, there is options out there that are a more "common sense" approach to qualifying, little to no documentation. I'd be happy to connect further and provide more details on any programs that suit your needs.
Thanks,