I will nominate MacGregor Links near Saratoga, NY. It was a wonderful Deveraux Emmit design when I played it years ago, however I have heard from several people that someone recently bought the course and has jammed houses/condos in on nearly every hole, just ruining a great place.
I was playing near this area today, and heard this same comments from yet another source. I have not played it since, but when everyone sings the same tune, you have to believe it.