A sattelite photo of Wards Island, now joined by landfill with Randalls Island to its north, doesn’t show a whole lot of single-family residential buildings. In fact, I don’t see any when I zoom in.
The Marble Hill section of Manhattan has many detached single family houses.
And I seem to recall that there are a few detached houses in some of the little, out-of-the-way streets in the West Village, like Macdougal Alley.
[QUOTE=mack]
I’ve seen a detached house in my neighborhood (besides Gracie Mansion). I can’t remember exactly where, though. I think 84th between East End and 1st somewhere. Anyway, there’s an old building up front, then if you go through the alley there’s what looks like an old wooden farmhouse behind it.
[/QUOTE]
Eh, scratch that. It was between 1st and 2nd on 82nd but it’s been torn down.