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Public-images-osm logo.svg building:flats
A number of residential units (flats) in a building Edit this description in the wiki page. Edit this description in the data item.
Group: buildings
Used on these elements
should not be used on nodesshould not be used on waysmay be used on areas (and multipolygon relations)should not be used on relations (except multipolygon relations)

building=* or building:part=*

Useful combination
See also
Status: de facto

A building:flats=* key contains a number of residential units (flats, apartments) in an apartment building (building=apartments), residential building (building=residential), house (building=house), detached house (building=detached) or similar building. Note that this is a quantity (e.g. 4) rather than the individual numbers of the apartments (e.g. 101;103;105, for which the tag addr:flats=* is used instead).

Often this can be surveyed without entering the premises by counting the number of letter boxes for numbered flats.

See also

  • addr:flats=* : to specify the individual flat numbers (or ranges of flat numbers) in a building.
  • building:levels=* : the number of floors (including the ground floor) in the building.
  • building:units=* : an alternative, not recommended, tag for the number of residential units, primarily used by one specific import from LA, USA.
  • RUIAN - government register which is the source of this data in the Czech Republic.