Most homes in Franklin Square were built in the 1940s and 50s as small capes. You’ve probably already expanded once. Now you’re bumping up against lot lines, zoning rules, or just the reality that there’s nowhere left to go but up.
A dormer lets you use the space you already own. That cramped attic with the sloped ceiling becomes a bedroom, a bathroom, a home office, or whatever you actually need. You get headroom, natural light, and livable square footage without tearing up your yard or dealing with a full addition.
It’s not just about adding space. It’s about staying in the home and neighborhood you’ve invested in. Homes here are selling for $415,000 to over a million depending on size and condition. A dormer can add serious value while solving the problem you’re dealing with today.
And if your lot size or local regulations won’t allow you to expand outward, a dormer might be your only real option. It’s a straightforward way to get what you need without the headache of moving or the cost of starting over somewhere else.
We’ve been handling large-scale projects across Long Island since the early 1980s. We’re licensed, insured with a $1 million policy, and ranked in the top 1% of contractors in New York according to BuildZoom.
We answer the phone. We respond to texts. We show up when we say we will. If something goes wrong in the middle of winter—frozen pipes, emergency repairs—we handle it.
Franklin Square is full of older homes that have been expanded, updated, and lived in by families who aren’t going anywhere. We get that. We’ve worked on hundreds of them. Our crews keep job sites clean, timelines realistic, and communication clear so you’re never guessing what’s happening with your own house.
First, we come out and look at your attic. We measure headroom, check the roof structure, and figure out what type of dormer makes sense for your home and what you’re trying to accomplish. Shed dormers are common because they add the most usable space. Gable dormers work well if you need something smaller or want to match your home’s existing style.
Once we agree on the plan, we handle permits if they’re required. On Long Island, that can add time depending on how backed up the county is. Some projects don’t need permits at all, which speeds things up.
The actual construction usually takes four to twelve weeks depending on size and scope. We open up the roof, frame the dormer, tie it into your existing structure, and make sure everything is weather-tight and insulated properly. If you’re adding a bathroom, we run plumbing and electrical as part of the job.
You’ll have access to the rest of your house the whole time. We’re not tearing apart your entire home. We section off the work area, keep dust and debris contained, and clean up at the end of every day. When we’re done, you’ve got a finished room that feels like it was always part of the house.
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A dormer isn’t just a roof bump. It’s a full structural addition that increases your home’s livable square footage. You get real headroom—at least 7.5 to 8 feet in the new space—so it feels like an actual room, not a glorified crawl space.
Natural light comes in through new windows. That dark, stuffy attic becomes bright and usable. If you’re adding a bedroom, you can include a closet. If it’s a bathroom, we run the plumbing and venting so everything works the way it should.
In Franklin Square, where the median home was built in 1952, most houses have attics that were never meant to be living space. A dormer changes that. It’s one of the most cost-effective ways to add square footage when your lot size won’t allow a ground-level addition.
Recent data shows that adding a loft or attic room can increase your property value by up to 22%. That’s real equity. And with homes in this area appraising anywhere from the mid-400s to well over a million, every bit of usable space counts.
We make sure the dormer matches your home’s existing style and roofline. It should look like it belongs there, not like an afterthought. And we build it to handle Long Island weather—snow load, wind, rain, all of it.
Most dormer projects run between $15,000 and $50,000 depending on size, complexity, and what you’re adding inside. A small gable dormer that creates a reading nook or expands a bedroom costs less than a full shed dormer with a bathroom and custom finishes.
The biggest cost drivers are size, structural work, and interior finishes. If we’re adding plumbing for a bathroom or running new electrical for lighting and outlets, that adds to the total. Permits, if required, also factor in.
We give you a clear estimate upfront so you know what you’re spending and why. No surprises halfway through the job. And compared to moving or building a full addition, a dormer is usually the most affordable way to get the space you need without leaving your home or neighborhood.
It depends on the scope of the project. Some dormer jobs require permits, especially if you’re changing the roofline significantly or adding plumbing and electrical. Other smaller projects might not.
We handle the permit process if it’s needed. On Long Island, permit backlogs can add weeks to the timeline, which is frustrating but out of anyone’s control. We build that into the schedule so you’re not caught off guard.
If your project doesn’t require a permit, we move faster. Either way, we make sure the work is done right and up to code. The last thing you want is a problem down the road when you go to sell or refinance.
Most dormer projects take between four and twelve weeks. That includes permits if they’re required, site prep, construction, and finishing work inside.
The timeline depends on the size of the dormer and what you’re adding. A simple shed dormer that expands a bedroom might take four to six weeks. A larger project with a full bathroom, custom closets, or multiple windows could take closer to twelve.
Weather can slow things down, especially in winter. We work year-round, but snow and freezing temperatures sometimes mean we have to pause certain steps until conditions improve. We keep you updated the whole way so you always know where things stand.
Yes. We design the dormer to match your home’s roofline, siding, and overall look. It should feel like part of the original structure, not something tacked on later.
Most homes in Franklin Square are cape-style or colonial. We’ve worked on both. Shed dormers are popular because they maximize interior space, but gable and hip dormers can work better depending on your home’s architecture and what you’re trying to achieve.
We also match materials—shingles, trim, siding—so everything blends. The goal is to add value and function without making your house look awkward or out of place in the neighborhood.
Absolutely. Adding a bathroom is one of the most common reasons people build dormers. You get a full bath upstairs without sacrificing a bedroom or closet on the main floor.
We run all the plumbing and venting as part of the project. That includes water supply lines, drain lines, and proper ventilation so you don’t end up with moisture problems later. If you want a primary suite with a private bath, a dormer makes that possible even in a smaller cape-style home.
Bathrooms add serious value. In a market where homes are selling for $415,000 to over a million, an extra full bath can make your house more competitive and livable. Plus, if you’ve only got one bathroom for a family of four, you already know how much easier life would be with another one.
A shed dormer runs along the length of the roof and creates the most usable interior space. It’s a single sloped roof that extends out from the existing roofline. You get maximum headroom and square footage, which is why it’s the most popular choice for adding bedrooms or bathrooms.
A gable dormer is smaller and projects out from the roof with its own peaked roof. It adds light and some extra space, but not as much as a shed dormer. Gable dormers work well if you just need a little more headroom in a specific area or want to add character to the roofline without a major structural change.
We help you figure out which type makes sense based on your home’s layout, your budget, and what you’re trying to accomplish. There’s no one-size-fits-all answer. It depends on your house and your goals.
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