In The Avengers, New York got pretty messed up by the Chitauri - the Hulk didn't exactly help limit the damage either.
However, unlike many movies where New York is damaged, the "Battle of New York" is referenced in following movies and in the Agents of S.H.I.E.L.D. TV show.
So has there been any indication that New York has been repaired to a working state prior to "The Battle of New York?