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|To mark number of levels under ground level|
|Used on these elements|
|Status: in use|
|Tools for this tag|
This tag is used for marking the number of underground levels of a building (building=*) or of a building part (building:part=yes).
For more information, see building:levels=*.
How to map
Use the tag on a closed way in combination with building=*. The value of building:levels:underground=* must be a non-negative integer (i. e. 0 or greater).
Do not use negative values! For above-ground building parts without connection to the ground, use building:min_level=* instead.
|0||no underground levels|
|1||one level underground|
|2||two levels underground|
amenity=parking building=parking parking=multi-storey building:levels=0 building:levels:underground=2