http://www.buildersshow.com/generic.aspx?sectionID=1842
Development type of the 2-3 family subset in the transitional neighborhoods in NJ (Newark, Jersey City) are what's called the Bayonne Box. The major critiques are the lack of architectural significance (suburban looking) and the garages that are an inherent part of their design. From a development standpoint, they're easy to build and financially feasible. If you're a fly-by-night developer that has access to capital, you can find lots that come with plans for these projects. According the JCRA, councilwoman, and other politicos I've spoken to, there's strong momentum to find a viable design alternative to the Bayonne Box. This article that I'm pasting below quickly describes them. Pasting another article as well.