Yes , the homes LOOK shabby, but trust, they are expensive, well maintained beach homes that gracefully mix the modern with the shabby. Good design is knowing how to balance the two. If a room is full to the brim with "shabby" well...it can look shabby.
The juxtaposition of the clean lines and slick surfaces against the rustic and well worn enhances the beauty of each.
Here are a few examples of that idea...