@Tommy Simpson, you're singing my song - I have a particular interest (on the construction side) of doing just this... here in my neck of the woods however.Since it appears the lot may be large enough from a gross acreage standpoint, you need to figure out the net usable area (e.g., lot shape, topography, setbacks, min/max footprint size, areas that may not be suitable for building upon, etc.).  

I'm looking for buy and hold properties in the Bronx (Castle Hill, Throgs Neck, Wakefield, Parkchester areas).

Check out the Bronx, I live in Throggs neck, a great area.

Particularly in my neck of the woods (San Juan Islands.)

I'll be in your neck of the woods the first weekend in December visiting my Aunt in Pompano!  

You could also be held criminally responsible in the event of a death or injury.

There are cities in the middle of the state, such as my neck of the woods, where BRRRRs work really well and are very profitable.

Either way, you need to narrow your criteria because if you leave it too broad you'll be spending too much time snapping your neck looking at everything that comes on the market and could be too slow to find any great deals.

Running into issues made my neck hurt believe me but stay laser focused on your goal and understand that this is minor.

Realtor.com is not very up to date in my neck of the woods.