Hi. For features that are still visible in imagery like this , rather than just delete them, the best thing to do is add one of the lifecycle tags: https://wiki.openstreetmap.org/wiki/Lifecycle_prefix#Stages_of_decay, in this case, probably demolished, which will leave an outline still showing on the map, so another mapper doesn't just add them all again! You could then also add landuse=construction to show that there's work going on there. Thanks!