I'm not to fond of the start_date tag, but I usually tag the construction years, architect and start_date if I've seen the building go up. anyways. This would be a building for me: - building=residential - construction_date=2008-2011 - [start_date][1]=2011 - [architect][2]=Åwl; Frans Bengtsson And the landuse=construction would have been tagged with: - opening_date=Autumn 2010 - start_date=2008 - architect=Åwl; Fran Bengtsson - website=http://www.awlark.se/ the The architect tag is a bit free form, but so is the date tags unfortunately. I also like to add websites to construction areas, which tend to be a bit free form as well. well. [1]: http://wiki.openstreetmap.org/wiki/Key:start_date [2]: http://wiki.openstreetmap.org/wiki/Key:architect

I usually tag the construction years, architect and start_date if I've seen the building go up. This would be a building for me: - building=residential - construction_date=2008-2011 - [start_date][1]=2011 - [architect][2]=Åwl; Frans Bengtsson And the landuse=construction would have been tagged with: - opening_date=Autumn 2010 - start_date=2008 - architect=Åwl; Fran Bengtsson - website=http://www.awlark.se/ the architect tag is a bit free form, but so is the date tags unfortunately. I also like to add websites to construction areas, which tend to be a bit free form as well. [1]: http://wiki.openstreetmap.org/wiki/Key:start_date [2]: http://wiki.openstreetmap.org/wiki/Key:architect