Pick a solid B-Class suburban area.

I am considering Lynn, MA for the following reasons: I am interested in the North Shore community since prices are fairly reasonable and it would be ideal for my commute to work.Lynn also has a solid price-to-rent ratio and is considered an upcoming area by many.I am open to any recommendations in the greater Boston area!

@Jefferson Smith - both people who responded, @Brian Eastman and @Carl Fischer provide the services you're looking for and have solid reputation.

Your best options are:a) LoopNet-->filter it to Multifamilyb) Find commercial real estate brokerages and view their listings directly on their website  (some brokerages will have access to the pertinent documents for a listing on their website, or you will have to request them from the listing broker)Looking at and starting to analyze deals will give you a background / solid base in how multifamily works.

Have an exit strategy whether that’s to sell or rent long-term.Whichever plan you choose, you’ve at least got a solid first step with your current rental.

The simple answer is that you show them you've thoroughly vetted the property and the deal, and that your findings, repair estimates, comps, etc are rock-solid. 

If you were under contract with no contingencies then there could still be a problem, that being said if you had a solid contract and even if you wanted to back out but they then sold the property to someone else you might have a claim yourself. 

prove to people you are requesting money from that its a great solid investment and it shouldnt be "hard to finance"

This froze solid in Chicago, so I keep behind storm door, now 

We have done this in locations with solid wood stairs... painted the staircase and put down carpeted treads.