Just up the street from me, a local builder is trying a tactic I have not seen before (in our area, at least). They are building out a new neighborhood, but it is quite diverse -- one end is dominated by duplexes in the 500K range and some smaller single family homes. The other end has larger, nicer homes priced at 2M or a little over. All in the span of a quarter mile or so.

They think it will work. I will be interested to see how it plays out.