From OpenStreetMap Wiki
|Source of address data|
|Used on these elements|
|Status: in use|
|Tools for this tag|
- This tag is especially useful when address data has been imported as it helps us keep a record of where the original data came from.
- Address data that has been collected by a ground survey can be tagged with source:addr=survey.
For tagging sources of other non-address information see source=*.