You’re running out of space. The kids need their own rooms, you need a home office, or that attic is just sitting there wasted. Moving sounds exhausting—and expensive. In Brookville, where homes regularly sell for $3-5 million and inventory sits at historic lows, finding your next house means competing in bidding wars and settling for compromises you don’t want to make.
A dormer changes that equation. You get functional square footage where you need it most. Bedrooms, bathrooms, office space—whatever your family actually uses. Natural light floods in through new windows. Your home’s curb appeal improves. And you stay exactly where you are, in the neighborhood you already love.
The right dormer doesn’t just add space. It solves the problem without uprooting your life or draining your savings on a new mortgage.
We’ve been building dormers and handling large-scale renovations across Nassau County for over 40 years. We’re licensed, insured with $1 million in coverage, and ranked in the top 1% of New York contractors on BuildZoom.
You’ll work with a crew that shows up on time, keeps your property clean, and treats your home like it matters. We answer the phone when you call. We respond to texts. If something goes wrong—frozen pipes, emergency repairs—we’re available to handle it.
Brookville homeowners deal with aging housing stock, cold winters, and the reality that most contractors either don’t return calls or disappear halfway through a job. We’ve built our reputation by doing the opposite. You get clear pricing upfront, professional communication throughout, and a finished dormer that actually works the way you need it to.
First, we walk through your home and talk about what you’re trying to accomplish. More bedrooms? A master suite? Office space? We measure the existing structure, discuss dormer styles that fit your roofline, and give you a clear estimate with no surprises later.
Once you approve the plan, we handle the permits if needed and schedule the work around your life. Our crew arrives on time, sets up properly, and gets to work on the framing and roof extension. We open up your attic, build out the dormer structure, install windows, and make sure everything is weathertight before moving inside.
Interior work comes next—insulation, drywall, electrical, and finishing. We keep the job site clean every single day because you’re still living there. When we’re done, you have a finished room that’s ready to use, not a half-completed project you need to figure out yourself. The whole process is transparent, and you’ll know what’s happening at every stage.
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You’re not just getting a bump-out on your roof. You’re getting a fully finished, functional room designed around how your family actually lives. That means proper insulation for Long Island winters, windows positioned for maximum natural light, and interior finishes that match the rest of your home.
We handle shed dormers, gable dormers, and full dormer additions depending on your roof structure and what makes sense for your property. Brookville homes—many built between 1940 and 1999—often have attic space that’s perfect for conversion, but the framing and engineering have to be done right or you’ll end up with structural problems down the line.
Our crew includes experienced carpenters, electricians, and skilled subcontractors who’ve worked on hundreds of Nassau County homes. We coordinate everything so you’re not managing five different people or wondering if the work meets code. And because we focus on larger projects like dormers and whole-house renovations, we bring the expertise that comes from doing this specific type of work over and over again. You get a dormer that adds real value to your home, not a cosmetic fix that causes problems later.
Dormer costs vary based on size, style, and how much interior finishing you need. A small shed dormer that adds headroom might run $10,000-$15,000. A full dormer addition that creates an entire bedroom with a bathroom can range from $30,000-$60,000 or more, depending on the scope.
Long Island pricing tends to run higher than national averages because of labor costs, material costs, and local building requirements. In Brookville specifically, where homes are larger and expectations are higher, you’re investing in quality work that matches the caliber of your property.
We give you a detailed estimate upfront that breaks down exactly what you’re paying for. No surprises, no variation from the original number. You’ll know what the project costs before we start, and that’s what you’ll pay when we’re done.
Yes, if it’s done right. A well-built dormer adds functional square footage, which directly impacts your home’s appraised value. You’re also improving curb appeal and making your home more attractive to future buyers who need extra space.
In Brookville’s market, where single-family homes average well over $2 million, buyers expect finished, usable space throughout the house. An attic conversion with a dormer checks that box. You’re not just adding a room—you’re making your home more competitive if you ever decide to sell.
That said, the real value is often personal. You get to stay in your current home, avoid the chaos of moving, and create the space your family needs right now. The financial return is a bonus on top of the immediate quality-of-life improvement.
Most dormer projects take 4-8 weeks from start to finish, depending on size and complexity. A simple shed dormer might be closer to 4 weeks. A full dormer addition with a bathroom, closets, and custom finishes could take 8 weeks or longer.
Weather plays a role, especially during Long Island winters. We work year-round, but snow, ice, and freezing temperatures can slow down exterior work. We’ll give you a realistic timeline upfront and keep you updated if anything changes.
Our goal is to finish on schedule without rushing the work. You’ll have a crew on-site regularly, the job site stays clean, and we don’t disappear for days at a time like some contractors do. You’ll always know where we are in the process and when you can expect the finished room.
It depends on the scope of the project. Most dormer additions that change your roofline or add significant square footage will require permits from the Town of Oyster Bay, which governs Brookville. We handle the permit process for you if it’s needed.
Some smaller dormer projects—particularly those that don’t alter the footprint or involve structural changes—might not require permits. We’ll assess your specific situation during the initial consultation and let you know exactly what’s required.
Skipping permits when they’re needed creates problems later, especially if you ever sell your home. Buyers’ attorneys and inspectors will flag unpermitted work, and you’ll end up dealing with it anyway. We do things the right way from the start so you don’t have headaches down the road.
A shed dormer has a single sloped roof that extends from your existing roofline. It’s the most common type because it maximizes interior space and headroom. Shed dormers work well when you’re converting an attic into a full bedroom or living area.
A gable dormer has a peaked roof and usually includes a single window. It’s smaller than a shed dormer and adds less interior space, but it can improve curb appeal and bring natural light into specific areas. Gable dormers are often used in multiples across a roofline for aesthetic balance.
Which one makes sense for your home depends on your roof structure, your goals for the space, and what fits architecturally with your existing house. We’ll walk you through both options and show you what works best for your specific property in Brookville.
Absolutely. One of the biggest reasons homeowners add dormers is to create a master suite or additional bedroom with a full bathroom. We handle all the plumbing, electrical, framing, and finishing required to build out a complete bathroom inside your new dormer space.
Closets are even easier. We can frame out walk-in closets, built-in storage, or standard reach-in closets depending on how much space you have and what you need. The key is planning the layout properly from the beginning so everything fits and functions the way you want.
This is where experience matters. We’ve built out dozens of dormer additions with bathrooms and closets across Nassau County. We know how to route plumbing without tearing apart your entire house, how to run electrical to code, and how to maximize every square foot of your new space. You get a finished room that works, not a half-thought-out addition that creates more problems than it solves.
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