Or, should I get a separate checking or savings account for each one?

They typically have their own yard with fencing separating the units and each unit has access independent from the other units.   

I’m a recently separated Marine Officer who is looking for a solid real estate attorney to work on setting up the business, wholesaling, and general RE investments in the area.

One is a brick duplex and the foundation is so bad in one room the walls and ceiling are literally separated the entire perimeter of the room.  

The basement has a separate entrance and electric meter (it seems like someone already rented out the basement before).

Some of the information that I have seen recommends creating a separate C-Corp Property Management company which then executes a Master Lease agreement with the underlying properties held by LLCs.

Is there a separation between REPS hours, where there are hours in real estate that count that deal with properties you did not acquire?

It has the possibility to have a separate entrance for a 3rd floor apt.

Two separate conventional loans, processed by the same lender simultaneously.

Also, Auburn and Lewiston do have separate Housing Authorities so be sure to contact the correct one to speed things up.