@Mark Sullivan if you are a buy and hold investor these loans work great.

Quote from @Eric Huntermark: Additionally, as I'm thinking about conventional loan products as well.

The lender is pushing you to do this to get an FHA loan.

Often, lenders will not act until the differential between current interest rates and the interest rate on the subject loan reaches a certain point.  

I would look at the DSCR loan as the first option.By the way, I suspect you are going to be disappointed by any refi appraisals   ADUs typically appraise poorly   JADUs can lower the property value Vs having the space as part of the primary unit.  

25 inspection, 25 closing, 1 loan.

Loan Amount: We specify this as a percent of the purchase price.

The most successful loans are those that do not procrastinate and get the appraisers In ASAP so you can get over any unexpected bump in the underwriting process.

A few thoughts- do you have any equity in the car with the $20K loan? 

The institutional firms that do this type of lending (we deal with them every day) have to "securitize" the loans...meaning have their hedge fund/Wall Street backer bless the deal.