You could also use landuse=brownfield for areas under development or construction sites - and perhaps if it looks like a construction site, even if no construction is happening right now.
However, if a building is currently standing then you'd probably want something more specific, to let you map the building and not just the plot of land it stands in. -- Ed Avis <e...@waniasset.com> _______________________________________________ Talk-GB mailing list Talk-GB@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-gb