You’re running out of space, but moving isn’t the answer. Not when homes in Manhasset Hills are selling at $1.4 million and you’d lose your neighborhood, your commute, and probably your sanity in the process.
A dormer gives you what you need without uprooting your life. It turns that cramped, dark attic into a functional room with real headroom, natural light, and proper ventilation. You get a bedroom for a growing family, a home office that actually has windows, or a bathroom that doesn’t require everyone to share one downstairs.
The return matters too. Dormer additions on Long Island typically return 60-80% of the investment when you sell. Homes with finished, usable space move faster and command higher prices. You’re not just adding square footage—you’re adding the kind of space buyers actually want.
Zoning rules in Nassau County make it hard to build out. Lot sizes are what they are. But you can build up, and a dormer does exactly that without requiring a full second-story addition.
We’ve been handling dormer installations and home renovations across Nassau and Suffolk County for over five decades. We’re not new to this, and we’re not learning on your roof.
You’ll talk to someone who answers the phone. Every time. We show up when we say we will, we keep the job site clean, and we finish on the timeline we give you—down to the day.
Manhasset Hills has specific building codes, and we know them. We handle the permits, work with our in-house architects when needed, and make sure everything passes inspection the first time. You’re not dealing with shortcuts or code violations that come back to haunt you at resale.
First, we come out and look at your attic. Not every roof can support a dormer, and not every attic layout makes sense for one. We’ll tell you what’s possible, what’s not, and what it’ll cost before you commit to anything.
Once we agree on the plan, we pull the permits. This isn’t optional, and it’s not something you want to skip. Local building codes vary across Long Island, and doing it right the first time saves you from problems when you sell or refinance.
The actual construction starts with framing the dormer structure and tying it into your existing roof. We weatherproof as we go—no one wants a tarp flapping around for weeks. Then comes insulation, drywall, windows, and whatever finishes you’ve chosen. If you’re adding a bathroom, we run the plumbing. If it’s a bedroom, we make sure it meets egress requirements for safety.
We clean up every day. You won’t have debris sitting in your driveway or nails in your lawn. When we’re done, you’ll have a finished space that looks like it was always part of the house.
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A dormer isn’t just a bump-out on your roof. It’s a full structural addition that includes framing, roofing, windows, insulation, electrical, and interior finishes. You’re getting a complete room, not a half-finished attic with exposed beams.
In Manhasset Hills, where the median home was built in 1962, a lot of houses have attics that were never meant to be living space. Low ceilings, poor ventilation, no light. A dormer fixes all of that. You get standing height, real windows, and proper climate control.
The windows matter more than you’d think. They bring in natural light, which makes the space feel bigger and more livable. They also provide ventilation and serve as an emergency exit if needed—something building codes require for bedrooms.
Energy efficiency is part of the package too. We insulate to current standards, which means the room stays comfortable year-round and doesn’t turn into an oven in summer or an icebox in winter. That’s especially important on Long Island, where heating costs add up fast.
It depends on the size, style, and what you’re finishing inside. A shed dormer that spans most of the roof and adds a full bedroom with a bathroom will cost more than a smaller gable dormer that just brings in light and headroom.
On Long Island, you’re looking at a significant investment, but it’s still a fraction of what you’d spend moving or adding a full second story. The return is solid too—most dormer projects recoup 60-80% of the cost when you sell, and homes with finished, usable space sell faster in this market.
We give you a fixed price upfront after we’ve looked at your attic and roof structure. No surprises, no change orders unless you decide to add something mid-project.
Yes. Any structural work that changes your roofline or adds living space requires a building permit in Nassau County. That’s not optional, and it’s not something you want to skip.
Permits protect you. They ensure the work meets code, passes inspection, and won’t create problems when you sell or refinance. Unpermitted work can kill a sale or force you to rip everything out and start over.
We handle the permit process from start to finish. We know the local building departments, we know what they require, and we make sure everything is documented properly. You don’t have to deal with the paperwork or the inspections—we do.
Most dormer projects take 4-8 weeks from start to finish, depending on size and complexity. Weather can affect the timeline—we’re not working on your roof in a storm—but we give you a schedule upfront and stick to it.
The framing and roofing happen first, usually within the first two weeks. Once the structure is weathertight, we move inside for insulation, drywall, electrical, and finishes. If you’re adding a bathroom, plumbing adds time.
We don’t drag projects out. Our crews show up on schedule, work efficiently, and clean up every day. You’ll know exactly what’s happening and when, and we finish on the date we give you.
It depends on your roof structure, pitch, and condition. Not every roof can support a dormer, and some attic layouts don’t make sense for one.
We need to look at your roof framing, check for adequate pitch (usually at least 4:12), and make sure the existing structure can handle the additional load. If your roof is old or has issues, we’ll tell you upfront. Sometimes it makes sense to replace the roof as part of the project.
Homes in Manhasset Hills were mostly built in the 1960s, and many have roofs that can accommodate dormers without major structural changes. But every house is different, and we won’t know for sure until we see yours.
Yes, as long as there’s room for plumbing and the layout makes sense. Adding a bathroom in a dormer is common, especially when you’re converting an attic into a bedroom or creating a primary suite.
You’ll need to run plumbing up from the floor below, which means opening walls and possibly rerouting pipes. We handle all of that. We also make sure the bathroom meets code for ventilation, drainage, and fixture clearances.
A bathroom adds value and functionality. If you’re creating a bedroom, having a dedicated bathroom makes the space far more useful and appealing to future buyers. It’s one of the upgrades that pays off.
A shed dormer runs horizontally along the roof and creates the most usable space. It’s the go-to choice when you want to add a full room with standing height across a large area. It’s practical, cost-effective, and maximizes square footage.
A gable dormer is the peaked style that projects out from the roof. It adds less interior space but creates more architectural interest and curb appeal. Some homeowners use multiple gable dormers for light and ventilation without a full room conversion.
Which one makes sense depends on what you’re trying to accomplish. If you need a bedroom or office, a shed dormer usually makes more sense. If you want to brighten up the attic and add character to the roofline, gable dormers work well. We’ll walk you through both options and show you what fits your house and budget.
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