i mean like economic? more money to rebuild
social? houses destroyed?
and environmental? buildings are on earth
so idk which i’d put buildings collapsing in
Anyway you've answered your own question
It can fit into any of those categories - when I did Geography GCSE I just put the impact of 'buildings collapsed' under the category I hadn't already covered with other examples and explained why it was social/economic/environmental. Am pretty sure that's ok to do even if you're not doing geography at GCSE.
Maybe environment is a bit of a stretch (they are on earth, but the construction of buildings harms the environment also) but there's a point to be made there as well.