New York - Is A Sukkah Kosher On Public Property?

New York - You drive by it in the morning. You see it in Far Rockaway, you see it in Flatbush, and you see it in Boro Park. You wonder about the Halacha. You see a Sukkah built on public property. Your thinking is that it is pretty near impossible to even contact the authorities to get permission to build on public property. And so you wonder.. Is it a Kosher Sukkah? Even if it is a Kosher...