If you are using the GetBestMatch_V4 operation…
If you are using the GetBestMatch_V4 operation, most likely the service is matching at Zip+4, Zip+2, or Zip level, which return an averaged centroid. The service isn’t saying your address is at that location, it is saying the centroid of the zip/+4/+2 is at that location. If DOTS Address Geocode – US is giving what it says is a street-level match that doesn’t look like it’s at the right location plotted on a map, the issue is most often a stylistic difference between your mapping solution and our data. Because geocoding information is gathered in very different ways, your mapping solution is probably using a very different method than Service Objects does. If the location given is a street-level match, and it’s very far away from the target location, please let us know at support@serviceobjects.com