Our dormers by Shells Only is the result of your expanding Long Island families. Services include all areas of Nassau County, New York, including Levittown, Wantagh, Garden City, and Seaford.

​

 

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 home's style. A SHELLS ONLY dormer never seems like an awkward add-on, it's always a perfect fit.