For many areas mapped the house numbers are not given, therefor the geocoder provides geo-data for an estimated position of the housenumber on the respective street, in OpenStreetMap (as well as in Google Maps - as google maps buys housenumber-data, they might have much better coverage though).
See details on covered house-numbered areas on OSM in the quote below. (The link is provided by @species)
- We have to deal with the scenario, that many adresses (the house numbers to be exact) people collect for us and is put in the coder just deliver estimated outputs that can be off the real location by some meters to some kilometers.
How do we deal with that? What is good strategies to …
not be hindered in mapping and generating mapping data by that fact?
Know which data is exact and which needs improvement?
enable the local communities to easily provide us with the right geo-data to the right project correct the geocoders´s adress estimate?