How to handle addresses which were estimated by a geocoder?

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)

  1. 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 …

  1. not be hindered in mapping and generating mapping data by that fact?

  2. Know which data is exact and which needs improvement?

  3. enable the local communities to easily provide us with the right geo-data to the right project correct the geocoders´s adress estimate?

We could…

  • provide people with the idea to “own” their GEO URI, and or provide people with the information, so they could find it on a map. I notice, that it becomes more common to provide people with a lat-lon information about a specific spot, than 5 years ago. It could be a possible interesting future development, because that would mean, that it is fully mapping system independent and can be implemented anywhere.

  • a smartphone app that easily collects the geo-data, if people check in a place would be good. I can imagine, that several of the mapping communities are willing to do that kind of GPS-Mapping to visit their sites on the respective adress and contribute to the information flow. That could be very playful, interactive and communicative, as people have to really visit the places. With that idea comes the question, how that could be easily facilitated from a technical side.

… other ideas?

I find this fellow interesting on that topic,

Dietmar Seifert (DE)
his OSM-Profile:
his website and contact:

he contribute the following talk at SOTM 2014
"OSM Housenumber Evaluation"
Improving Address Quantity and Quality Through Automated Analyses

The initial map, mentioned in the first post was generated by
Simon Poole
his OMS-Wiki-Profile:

As I mentioned in another topic

If we find some time (and budget) we may set up a nominatim instance ourselves, where we feed all free geodata we can get ( and e.g. the Austrian BEV address data ) - and use that for geocoding where OSM is not good enough.