Sorry to pull up an old thread, but I think there are assumptions that all mapping programs make about how houses/buildings are numbered. When I Google Map my house, it doesn't give me the exact location, but shows me the house a couple of doors down. Most mapping software can get you on the right block, but may not get the exact right address because the buildings are not evenly spaced or the numbering is not quite logical. I know on my street, we have the typical odd numbers on one side and evens on the other, but we skip every other one. So if my house is #117, the house next door is #113 and the one on the other side is #121. I would think that automated mapping programs would expect there to be a 115 and 119. And I know in a lot of places, the cities and towns have been renumbering to make it easier for 911 to find a place. Those updates would probably not be communicated or included in map updates. You do still need to use your eyes when navigating with your GPS.
