Legendary dormers by Shells Only are the best solution to your expanding Long Island families. Services include all areas of Nassau County, New York. 
 

With unmatched "dormer know-how", Shells Only is Long Island's premiere dormer builder.  No matter what type or size of Long Island home you have, Shells Only has seen it and built it. We seamlessly integrate the new dormer construction with your existing homes style. A SHELLS ONLY dormer never seems like an awkward add-on, it's always a perfect fit.