This is weird.  Need more research, seems these multifamily homes have 4 and 5 digit addresses, but not sure of the significance.  Seems each of these buildings have a 5-digit address with the last digit 0.  The first 3 digits is shared among the three digits of the 4-digit addresses.  Each building seems to have a unique first 3-digits.

Now this note seems to break this system as there's no 5-digit without a 0 imported.  What's going on here?