Dormers in Westbury, NY

Turn Your Attic Into the Room You Need

Add a bedroom, office, or bathroom without the cost and stress of moving—dormers give you functional space, natural light, and a serious boost in home value.

Dormer Installation Westbury, NY

More Space Without Leaving Your Neighborhood

You’re running out of room. The kids need their own space, you need a home office, or maybe you just want a master bathroom that doesn’t feel like a closet. Moving sounds exhausting—and expensive. With home prices on Long Island up and inventory still tight, finding something better in your price range feels nearly impossible.

A dormer changes the equation. Instead of dealing with bidding wars and moving trucks, you’re adding real square footage right where you already live. We’re talking about transforming that cramped, dark attic into a bedroom with actual headroom, an office with windows, or a bathroom where you can finally breathe.

It’s not just about the extra room. Dormers flood your upper floor with natural light, improve ventilation, and completely change how the space feels. And when it comes time to sell? You’re looking at a potential 22% increase in property value, with homeowners typically recouping 65-80% of the project cost. That’s not a remodel—that’s an investment that pays you back.

Dormer Contractor Westbury, NY

50+ Years Building What Westbury Homeowners Need

We’ve been handling large-scale remodels across Nassau County since before most of your neighbors moved in. We’re not a crew that dabbles in dormers between deck jobs—this is what we do. Kitchen gut jobs, bathroom expansions, first-floor renovations, extensions, and yes, dormers that actually make sense for your home and your block.

We’re licensed, insured, and bonded. Our BuildZoom score ranks in the top 1% of contractors across New York. But what really sets us apart is something simpler: we answer the phone. At 3 AM when your pipes freeze, at 9 PM when you finally have a minute to call. We show up when we say we will, keep the job site clean, and treat your home like it matters—because it does.

Westbury homeowners deal with older housing stock, tight zoning rules, and a competitive market where every square foot counts. We’ve been navigating that for decades, and we know how to add space without adding headaches.

Dormer Construction Process Westbury

Here's What Happens From Start to Finish

First, we come out and look at your attic. Not every home is set up the same way, and we need to see your roof structure, ceiling height, and how the space connects to the rest of your house. We’ll talk about what you want to use the space for, what’s realistic given your home’s layout, and what the town requires for permits.

Once we’re on the same page, we handle the design and pull the permits. In Westbury, any dormer addition requires approval, and we make sure everything’s filed correctly so you don’t get stuck with compliance issues down the road. Then the real work starts: framing the dormer, extending your roofline, adding windows, insulation, electrical, and finishing the interior so it matches the rest of your home.

The timeline depends on the size and complexity, but most dormer projects wrap up in a matter of weeks, not months. We coordinate everything—roofing, framing, drywall, trim—so you’re not juggling five different contractors. And when we’re done, you’ve got a finished room that feels like it was always part of the house.

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About Ray Coleman

Dormer Repair and Extension Services

What You're Actually Getting With a Dormer

A dormer isn’t just cutting a hole in your roof and calling it a day. You’re getting structural framing that extends your roofline, windows that bring in natural light, insulation that keeps the space comfortable year-round, and interior finishes that match your home. Depending on what you need, that could mean electrical for lighting and outlets, HVAC to heat and cool the new space, and plumbing if you’re adding a bathroom.

In Westbury and across Nassau County, a lot of homes were built 50, 60, even 70 years ago. That means we’re often working with older roof structures, outdated wiring, and spaces that weren’t designed with modern building codes in mind. We handle all of that—reinforcing where needed, upgrading systems, and making sure everything is up to code before we close up the walls.

Dormers come in different styles. Shed dormers run along the roofline and give you the most usable space—great for full bedrooms or bathrooms. Gable dormers are smaller, often used for home offices or walk-in closets, and they add serious curb appeal. We’ll walk you through what makes sense for your home, your budget, and your neighborhood’s look.

And because Long Island winters are no joke, we pay close attention to insulation, ventilation, and weatherproofing. You’re not just getting more space—you’re getting space that works in February and in August.

How much does it cost to add a dormer in Westbury?

Most dormer projects in Westbury and Nassau County run around $30,000, but that number moves depending on size, style, and what you’re finishing inside. A small gable dormer with basic finishes will cost less than a full shed dormer with a bathroom, custom trim, and high-end windows.

Here’s what drives the price: structural work and roofing, windows and exterior materials, insulation and HVAC, electrical and plumbing if needed, and interior finishes like drywall, flooring, and paint. If your roof needs reinforcement or your attic has outdated wiring, that adds to the scope.

We give you a clear estimate up front. No surprises, no hidden fees. And when you compare the cost of a dormer to what it would take to move—realtor commissions, closing costs, higher mortgage rates, and the premium you’d pay in this market—it’s not even close. You’re staying in the neighborhood you like, keeping the commute you know, and adding value to the home you already own.

Yes. Any dormer addition in Westbury requires a building permit, and the town takes that seriously. Permits aren’t just red tape—they ensure the work meets structural and safety standards, and they protect your home’s value when it’s time to sell.

We handle the permit process. That means submitting plans, coordinating inspections, and making sure everything is approved before we start framing. It’s one less thing you have to think about, and it keeps the project on track without delays or compliance issues later.

Some contractors will try to skip permits to save time or cut costs. Don’t let them. Unpermitted work can kill a sale, trigger fines, or force you to tear out finished work and start over. We do it right the first time, so you don’t have to worry about it five years from now when you’re sitting at a closing table.

Most dormer projects take anywhere from three to six weeks, depending on size, weather, and how complex the interior finishes are. A straightforward shed dormer with standard finishes moves faster than a custom gable dormer with a full bathroom and built-in storage.

Here’s the general timeline: permits and approvals take one to two weeks, framing and roofing take one to two weeks, and interior work like electrical, insulation, drywall, and finishes take another two to three weeks. If we hit a stretch of bad weather or need to coordinate with the town for inspections, that can add a few days.

We keep you updated the whole way through. You’ll know when we’re starting, what’s happening each week, and when we’re wrapping up. No ghosting, no vague timelines. And we keep the job site clean, so you’re not living in a construction zone longer than necessary.

Yes. Research shows that adding a dormer can increase your home’s value by as much as 22%, and most homeowners recoup between 65% and 80% of the project cost when they sell. That’s a strong return compared to other remodeling projects.

Here’s why dormers add value: you’re adding functional square footage, which matters in a market where inventory is tight and buyers are competing for space. You’re improving curb appeal with architectural detail that makes your home stand out. And you’re solving a problem a lot of Long Island buyers face—older homes with limited room to grow.

In Westbury, where home prices are already 51% higher than the national average and buyers expect move-in-ready properties, a finished dormer can be the difference between sitting on the market and getting multiple offers. Even if you’re not selling anytime soon, you’re living in a more comfortable, functional home while building equity you can tap into later.

A shed dormer runs along your roofline and has a single sloped roof. It gives you the most usable interior space, which is why it’s the go-to choice for full bedrooms, bathrooms, or larger home offices. The tradeoff is that it’s more visible from the street, so it has a bigger impact on your home’s exterior look.

A gable dormer is smaller and has a peaked roof that matches your home’s existing roofline. It’s great for adding a window, a reading nook, or a walk-in closet without changing the overall footprint too much. Gable dormers add curb appeal and architectural interest, but they don’t give you as much interior square footage as a shed dormer.

Which one makes sense depends on what you need the space for, how your home is laid out, and what your neighborhood looks like. We’ll walk you through both options and show you what works best for your house and your budget.

Absolutely. A lot of Westbury homeowners add dormers specifically to create a master bathroom or a second full bath upstairs. It’s one of the best ways to add value and functionality without expanding your home’s footprint.

Adding a bathroom means running plumbing, which involves connecting to your existing water and waste lines. Depending on where your dormer is located and how your home is plumbed, that could mean running new lines through walls or up from the basement. We also add electrical for lighting, outlets, and ventilation, plus HVAC if the space needs heating and cooling.

The interior finish is up to you—tile, vanity, fixtures, lighting. We handle the rough-in work and the finish work, so you’re not coordinating with multiple contractors. And because we’re working in an older home, we make sure everything is up to code and built to last, so you’re not dealing with leaks or ventilation problems a year down the road.

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