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Public-images-osm logo.svg building = *
Using this tag is discouraged, use building=yes instead.
Group: Buildings
Used on these elements
should not be used on nodesshould not be used on waysshould not be used on areasshould not be used on relations
Status: deprecated

exclamation mark

This feature has been labeled as deprecated. The recommended replacement is: building=yes.
The reason is documented in Deprecated features. You are still free to continue to use or interpret this tag as you see fit since OpenStreetMap does not have “banned features”.
Under no circumstances should you (semi-)automatically change “deprecated” tags to something else in the database on a large scale without conforming to the automated edits code of conduct. Any such change will be reverted.

There is no value whatsoever in using building=* instead building=yes. Meaning is the same, it just makes it harder to support it by various tools. For example StreetComplete will ask about building type for building=yes, it will not happen with this building type.

As bonus "*" character in text like "building=*" is often used in meaning "any value"[1]. It makes using "*" as a value especially confusing.

External links

See also