@Ali Kassam one important item to consider when negotiating terms of a loan is the balloon payment.

But you will set out finish needs or other larger items: full kitchen remodel or just new appliances and paint cabinets.  

@Carrie K.

You need health and safety items in and working.

Mom and pop owners often won't disclose either because they never kept records, or also common, they are writing off a lot of items to the property that make the property appear more financially burdened than may be the case (I may or may not have had a few dozen dinners out with my wife that get booked to my rentals).

What are the most important items to compare?

If there is a way for 2nd floor to go directly to the basement, you might be better off putting the setup there.Other items to consider--who pays for the water/sewer? 

Basics:-I currently live, and wish to continue living, in Boston/Cambridge/Somerville/Charlestown in a “nice” 1-2 bed (w/ significant other)-Assume I am fully extended with 20% down on a ~$900k property (or less on more, as I am willing to tolerate a negative cash flow of ~$2k/mo, inclusive of my personal rent)-I do not presently have a contractor/“team” and am not personally “handy” thus would need to factor in significant costs to any rehabOptions, as I see them:-Buy a 1-2 bed in an area I want to live, live there-Buy a multi family in an area I want to live and rent the other unit(s) - may overextend myself and I will not be able to carry the nut if significant vacancies-Buy a cash flowing rental property (single family, multi family, condo) in an area I don’t want to live (e.g., Everett, Revere, Chelsea, Dorchester, other B/C neighborhoods, out of state) and rent in my desired areaIf you were in my shoes, what might you do (aside from compromising on my desired location and house hacking a MF in a B/C neighborhood)?

Basics:-I currently live, and wish to continue living, in Boston/Cambridge/Somerville/Charlestown in a “nice” 1-2 bed (w/ significant other)-Assume I am fully extended with 20% down on a ~$900k property (or less on more, as I am willing to tolerate a negative cash flow of ~$2k/mo, inclusive of my personal rent)-I do not presently have a contractor/“team” and am not personally “handy” thus would need to factor in significant costs to any rehabOptions, as I see them:-Buy a 1-2 bed in an area I want to live, live there-Buy a multi family in an area I want to live and rent the other unit(s) - may overextend myself and I will not be able to carry the nut if significant vacancies-Buy a cash flowing rental property (single family, multi family, condo) in an area I don’t want to live (e.g., Everett, Revere, Chelsea, Dorchester, other B/C neighborhoods, out of state) and rent in my desired areaIf you were in my shoes, what might you do (aside from compromising on my desired location and house hacking a MF in a B/C neighborhood)?

Keep one eye on how much debt you're carrying since it can affect your ratios that lenders follow, or even your credit score.Jim Kennedy