Coming across Nominatim/Installation it says:
In the US, the OSM instance of Nominatim uses TIGER address data to complement the still sparse OSM house number data.
Basically I'm wonder how it works? Because:
In the TIGER FTP I can't find any file (.shp) representing points/polygons of buildings, not speaking about attribute of house number. By the way: where I can find polygon of regular residential building in TIGER?
Looking at the open street map (example) I don't see a house number. Same when downloading the .shp from geofabric etc.
Checking in public Nominatim API URL there is a house number. So even if there is another source of data rather than TIGER - Why I don't see it on the open street map? Because if some part of the open street map project has the information - don't we should see it on the main map?
- Even more - Sometimes the Nomination works fine even if unlike in the above example, we don't have polygon of the building at all on the map...