Dormer Additions · Nassau County, NY
Long Island is full of capes with wasted space up top. A dormer unlocks it — adding full-height bedrooms, a primary suite, or a second bath where you once had a cramped, sloped attic.
Premier Dormers
The postwar capes of Merrick, Levittown and the surrounding towns were built to be expanded — and a dormer is the highest-value way to do it. A shed dormer opens up the back for full-height rooms; a full dormer adds a true, finished second floor.
We handle the structural work, the tie-in to your existing roof, and the exterior match so your expanded home looks intentional and holds up to Long Island weather. Inside, you get the bedrooms and bathrooms your family actually needs.
Start Your Project →How We Work
A seamless experience from first sketch to the final reveal.
We meet in your home, listen to how you live, and take detailed measurements of the existing space.
You see your project in realistic 3D and refine the layout, finishes and materials with our designer.
We guide every material selection and handle the permits and documentation the town requires.
Our own craftsmen execute the work cleanly, on schedule, protecting your home throughout.
What We Handle
Recent Work
A selection of recent Illustrious Renovations projects across Long Island.
Kind Words
"They took our dated space down to the studs and gave us something out of a magazine. Clean, on time, and genuinely cared about the details."
"From the 3D design to the final walk-through, everything was exactly as promised. It made a full renovation feel completely manageable."
"Craftsmanship you can feel. Flawless work, done on the schedule they gave us up front. We've already recommended them to neighbors."
Let's Begin
Book a free in-home consultation and see your project in 3D — no pressure, no obligation.
Good to Know
A full dormer effectively gives you a true second story; a shed dormer opens up the rear for full-height rooms. We'll show you both options in 3D for your specific house.
Most dormer projects run six to twelve weeks depending on size and whether we're finishing the interior. We give you a firm schedule before we open the roof.
Almost all South Shore capes are — they were designed to be expanded upward. We'll confirm with a free structural assessment.
Yes. The connection between the new dormer and your existing roof is where cheap jobs fail. We flash and waterproof it to last.
