He should politely decline and ask if they know anyone looking to rent.

He has worked on financings ranging from commercial real estate, tech startups, Hollywood productions, delivering private aircrafts to international airports, and many things in between.

@Jacob Sampson that’s true, I wouldn’t care as much about my property value at that point as long as I’m cash flowing but I also heard that in a downturn rents can decline as well due to job loss.

So far (according to the Zillows and other products like it) my property has appreciated by 1% about 20-40k depending on the site you use - and seconded by my real estate agent. 

Therefore if/when the market declines, we are still making returns through cash flow, and still forcing appreciation through value-add components.

@Chloe Dawn Murphy if you are ok with putting your fixed rate, tax deductible interest mortgage into a variable rate, non-deductible product then go ahead. 

@Jonathan Wildy if you go this route please make sure that you have a plan to refinance out of these types of loan products eventually.  

This wasn't a home run for us, but a solid base hit with a product we were very proud of at the end of the day.

When you're looking at a non-QM loan/lender, they tend to have a bit more flexibility in underwriting guidelines compared to the QM product (but that doesn't mean it's a lesser/riskier loan, just that they have different ways to satisfy certain requirements). 

A duplex investment property you are going to be limited to 70% on just about every loan product.