Eichler Homes in New York State?

Yes. There are four of them. This was not one of my grandfather's better ideas, especially since he didn't have the designs altered to suit the very different climate. Also, although the article doesn't mention in, the process of getting homes approved and built was (and probably still is) quite a bit different in NY State, compared with California. In addition, my grandfather had built up a very efficient operation in the Bay Area, which was not available to him on the other side of the country. In addition, building only a very small number of homes did not offer the kind of economy of scale that he had in the Bay Area. Thus, the homes in New York State were not as profitable and possibly did not really make any economic sense at all. 

This article tells part of the story: Modern Spotting: The Lost Eichlers of Rockland County, NY