NYC apartment building partially collapses, ripping massive hole in high rise
nbcnews.com
nbcnews.com
But there is also many years long backlog on repair work required for public housing units by the NYC Housing Authority that does result in apartments sitting empty. The current estimate is its $80 billion in repairs backlogged https://comptroller.nyc.gov/newsroom/nyc-comptroller-audit-f...
With 6000 units sitting on that backlog https://gothamist.com/news/nycha-has-nearly-6k-vacant-apartm...