I haven't found clear guidance on this yet, but would like to know if there's a best practice here. For multi-level parking, the presets are usually amenity=parking, parking=multi-storey. For multi-level concrete structure dedicated solely to car parking, should it also have building=yes? That way, it would show up on OSM Mapnik as a building, not just a yellow area, and would it would make sense to have building:levels and such. But none of the presets I've seen include a checkbox for building and some map styles may assume that amenity=parking and building=yes are mutually exclusive.exclusive. Edit: There is also no guidance in the wiki page for amenity=parking: http://wiki.openstreetmap.org/wiki/Tag:amenity%3Dparking

I haven't found clear guidance on this yet, but would like to know if there's a best practice here. For multi-level parking, the presets are usually amenity=parking, parking=multi-storey. For multi-level concrete structure dedicated solely to car parking, should it also have building=yes? That way, it would show up on OSM Mapnik as a building, not just a yellow area, and would it would make sense to have building:levels and such. But none of the presets I've seen include a checkbox for building and some map styles may assume that amenity=parking and building=yes are mutually exclusive.