Key:roof:levels
 roof:levels
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For stating the number of levels in the roof of a building. 
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| Status: de facto |
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This tag is used for marking the number of roof levels of a building (building=*) or of a building part (building:part=*).
Value should be a positive or zero integer: 0, 1, 2, etc. A level is the space between a floor and a ceiling or, for the highest level, from the floor to the highest edge of the roof. Default height of a level is 3 meters (height used for 3D rendering when height tags are not used). If a level has a different height (for example 2 meters), do not use fractional values but height tags. For example, roof:levels=1 and roof:height=2 (you can stand up in a 2 meters high roof). Or roof:levels=0 and roof:height=1 (you can't stand up in a 1 meter high roof so levels value is zero).
For more information, see building:levels=* and Usage of heights and levels
Examples
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See also
- building:levels=* – Number of levels in the facade of a building
- height=* – Physical attribute of an object (building, tree, tower...). Height is the measurement of vertical distance. It indicates how "tall" something is
- roof:height=* – Height of the roof
- Simple 3D Buildings
Possible tagging mistakes
References
- ↑ This building will not have a good 3D rendering because it is very difficult to show a roof with 2 different height for the 2 levels because of the half-hipped shape: the first floor is 3 meters high but the last floor is 2 meter high. Rendering will show 2 levels of 2.5 meters high for each.
- ↑ discussed in https://lists.openstreetmap.org/pipermail/tagging/2022-July/065027.html thread