It is not at all unusual for a unit to last 20 years or more with maintenance.

Wait until later to try anything unusual.  

That's just an unusually low rate for a non-owner occupied loan.

My brothers and I are employees of the DBA.I have read quite a bit on 1031 exchanges as well and am still a little uncertain if it will fit into our business plan to start because of the inability to hold the properties for a year or more until we build a little more capital.We just want to maximize profits.

San Francisco appears to have them as well, although I'm uncertain if they're constructed differently.That is unfortunate about the high operating costs of those buildings as I am sure they are beautiful and it enhances the neighborhood to have them maintained and occupied.  

This seems unusually low, but maybe I misunderstood. 

Ultimately if they are not serious about selling, there's not much you can do to force their hand.Prop 2: Not too unusual with tenant occupied multi-units to not want ten thousand looky loos trampling in and out of the tenants' living area.

Would it be an unusual process to just look at their properties, run my own numbers to compare to what they are advertising, and go from there?

It’s not unusual on a $100K investment to experience a min 8% preferred return or cash in your pocket of $8K while experiencing a paper loss on your annual K-1.

Your experience doesn't seem too unusual - you will receive a large number of inquiries, your job (or the property managers job) is to sort them and provide quick and clear responses to applicants on next steps (denied and reason for denial, etc).