Does it have to be Westport? Although true modernist houses do exist there, true modernist houses are sort of scattered throughout Fairfield County. If the style home is what you are committed to, then you may have to be more flexible on town. For example, New Canaan offers probably the most choice in moderns, and I even know of one in Stamford (however, it needs considerable work). I have just finished working with a couple from NYC who also were looking for moderns -- we started in Darien, moved onto New Canaan, but actually ended up buying in Ridgefield! Please let me know if I can be of further assistance!
Keller Williams Real Estate