For tough ones (which this might be), it's not uncommon for the first 5 appraisers to decline the order, and the 6th to respond with "pfft sure but I wont do it for less than $750."

Not uncommon with major metro areas like San Fran, DC, Boston, etc., but worth knowing what you're getting into. 

Having multiple members in an LLC is not uncommon.  

IF and I guess that's the operative  IF they value their fico.. and of course in Texas in default situations is not uncommon for the bank to sue on the note on top of taking the property.. so double whammy there.  

Comps are uncommon.  

Its not uncommon for people to ask for high numbers so I mentioned my comps which showed LLC's purchasing the exact same lots for 75k-150k so i countered with 75k.

In the area being considered, its not uncommon for there to be no offstreet parking for retail.Not sure about the exact tenant, but the area is getting alot of development and there is a small strip mall across the street.  

It is not uncommon by the way for investors to walk away. 5 years ago is the 2007 vintage when most markets were at the peak.The investor has a high interest investor loan and a high sales price.Probably was just breaking even hoping for the market to turn.Now that the tenant left a bunch of damage the investor is jumping ship and not pouring anymore money into a bad investment.At the owners age enjoying the last years of their quality of life is more important than an overvalued debt to a bank.

Its not uncommon to find these houses on double lots from many years back.

Duplexes and Triplexes are managed much more like single families than multi family / commercial properties so it is not uncommon for an owner to not keep his own records.