It sounds like your spidey sense is tingling.

I know it sounds counter intuitive, but you can increase your passive income by claiming everything legally possible as capital expenses. 

Some sound good on paper and then lack customer service, etc. 

To me this sounds like they have a contract with someone to supply or find rentals for their staff. 

If you plan to keep all of these long-term, you could do a portfolio loan and combine all 6 into one portfolio. it sounds like they're cash-flowing, which would be the majority of the "qualification" on portfolios, and you could take cash-out based on a combined LTV on all 6 of them.

May also work if the duplex is a higher price, larger square footage, in a better school district etc.I know I sound like a broken record on these forums but “Occupancy” is not always a black/White issue 

@Brian Orr sounds good!

It sounds like finding a good commercial specialist is worth pursuing, so I will look into that. 

Not to sounds offensive, but everyone's time is valuable.If you are a buyer, you typically don't pay anything to the agent, unless they charge any retainer fee.

@Dan Barli No, but that sounds like a great idea.