I've never seen an apartment complex that had bedrooms in it that didn't have any windows... I have built apartment buildings and they need to have sprinklers

I've never seen an apartment complex that had bedrooms in it that didn't have any windows... I have built apartment buildings and they need to have sprinklers (circa 2010) but more importantly they need to have Windows... the cost savings is probably null considering that you're going to be filling the space with concrete, and when the fire happens, which they do, you'll probably get sued into bankruptcy by anybody living in such a building with no windows. From what I understand you're not even allowed to have an interior room that's a sleeping quarters that doesn't have a window, and if anybody found out that you were doing that it would get shut down immediately.