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Public-images-osm logo.svg ref:bag
BAG reference number for properties Edit this description in the wiki page. Edit this description in the data item.
Group: References
URL pattern$1
Used on these elements
should not be used on nodesshould not be used on waysmay be used on areasmay be used on relations
Status: importedPage for proposal

This key contains the reference number (ID) from the BAG database containing addresses and buildings in the Netherlands. One can look up the record in the database using (dutch). Note that this website requires 16 digit ID's for buildings, append a zero (or two or three) in front of the ID if necessary. When using the tag2link plugin in JOSM you can open the bag viewer by right clicking on the tag and choosing "Open in BAG Viewer". This automatically adds leading zeros if necessary.