From OpenStreetMap Wiki
|landuse = construction|
|An area being built on.|
|Used on these elements|
|Tools for this tag|
An area of land being built on.
- construction=residential (the kind of construction, usually what the landuse-tag should become when the construction is complete)
- operator=The Building Company Ltd
Tags on additional objects
- building=construction to map single buildings which are under construction. Usually you would use landuse=construction to tag the whole construction area, which is generally bigger than the building outline(s), and create new, separate objects for the under-construction buildings with this tag.
- Original proposal for this tag