However, there are other loans designed for fixer uppers referred to us hard money loans, bridge loans, or fix and flip loans but whatever you want to call them they're essentially short term, interest only loans with no prepayment penalties designed to finance a higher % of your purchase price and typically all of your renovations not to exceed a certain % of the ARV (typically 75% max). 

Should your mom pass away before you, the loan could not be called due, 

With a 203k Renovation loan, you can also finance in your payments if you are doing a major rehab. 

This money gets added onto the back of the loan kind of like a VA funding fee does. 

They do minimal at best verification of the data the applicant provides.

At the same time, dispute the late payments with the bureaus and provide the payment records showing the payments were made on time if asked.

, I am wondering if anyone has expertise or experience with entity transfers and the loan options available? 

Is it smart to take out a 40 year loan to get some cash flow?  

Paying off the mortgage can provide peace of mind and simplify retirement, while keeping the debt allows you to leverage your funds for higher returns through investments.

Different DSCR lenders have different guidelines.More on DSCR loans: DSCR loans won't use your income to underwrite the loan.