You’ve outgrown your house, but you haven’t outgrown Flower Hill. The schools are excellent, your commute works, and your neighbors are people you actually like. Moving sounds exhausting and expensive.
A dormer addition gives you the square footage you need without uprooting your family. That cramped attic space you’re using for storage becomes a full bedroom with a bathroom. Or a home office that actually has natural light. Or a suite for aging parents who need to be close but still want their own space.
The construction happens on the upper level of your home, so you’re not displaced from your kitchen or living areas during the work. Most dormer projects in Nassau County add between $40,000 and $60,000 in home value while creating functional rooms your family will use every day. You get the space you need and stay exactly where you want to be.
We’ve been handling major renovations in Flower Hill and throughout Nassau County since the 1970s. We’re a second-generation, family-run general contractor that specializes in the kind of large-scale projects that actually change how you live in your home.
Ray Coleman still works on job sites daily. When you call, someone answers. When you text, you get a response. If your pipes freeze at 3 a.m. in the middle of winter, we pick up the phone and help you solve it.
Flower Hill homes have character. Colonial, Cape Cod, and Tudor designs that need contractors who understand how to work with existing architecture instead of against it. We know the local building codes, the climate challenges Long Island throws at you, and how to keep a job site clean when your family is still living in the house. That matters when the work is happening above your head.
First, we come to your house and look at your attic space. We measure the existing structure, check the roof framing, and talk through what you actually need. A bedroom? A bathroom? Both? We’ll tell you what’s possible and what makes sense for your home’s architecture.
Once you approve the design, we handle the permitting if needed. Many dormer projects don’t require permits, which speeds up the timeline significantly. If yours does, we manage that process so you don’t have to chase down paperwork at the town office.
Construction starts with the roof. We open up the attic, frame the dormer structure, and extend your roofline. Then we install windows, insulation, electrical, and plumbing if you’re adding a bathroom. The interior gets finished with drywall, flooring, and trim that matches the rest of your home.
Throughout the project, our crews keep the work area clean. You won’t come home to a disaster zone every day. We protect your property, contain the mess, and communicate clearly about what’s happening next. Most dormer installations take four to eight weeks depending on size and complexity. When we’re done, you have a finished room that looks like it was always part of your house.
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A dormer addition isn’t just a roof extension. It’s a complete room build that includes structural framing, roofing, siding that matches your existing home, windows, insulation rated for Long Island winters, and all electrical work to code.
If you’re adding a bathroom in that new space, we handle the plumbing, fixtures, tile work, and ventilation. If it’s a bedroom, we install proper heating and cooling so it’s comfortable year-round. The interior finishes match your home’s existing style so the new space doesn’t look like an obvious addition.
In Flower Hill, where home values average over $1.8 million, the details matter. We use quality materials that hold up to harsh winters, heavy snow loads, and the occasional nor’easter that rolls through Nassau County. Your dormer gets built to last, not just to pass inspection.
We also keep your home weathertight throughout construction. No tarps flapping in the wind for weeks. We work efficiently, close up each day, and make sure rain and cold air aren’t getting into your house while the project is underway. You’re still living there, and we respect that.
Most dormer projects in Nassau County run between $60,000 and $150,000 depending on size and what you’re building. A shed dormer that adds a single bedroom with a small bathroom sits on the lower end. A full-width dormer that creates multiple rooms with high-end finishes costs more.
The price includes everything: structural work, roofing, siding, windows, insulation, electrical, plumbing if needed, and interior finishes. You’re not getting a shell. You’re getting a finished, livable space that’s ready to use.
For context, that investment typically adds $40,000 to $60,000 in home value in Flower Hill’s market. But the real return is staying in a neighborhood you love instead of spending $50,000 on moving costs, realtor fees, and the headache of uprooting your family. The math makes sense when you factor in what you’d actually pay to relocate to a bigger house in the same area.
It depends on the scope of the project. Some dormer additions in Nassau County don’t require permits, especially if they fall under certain size thresholds and don’t alter the home’s footprint. Others do require permits and inspections.
We handle this evaluation during the initial consultation. If your project needs a permit, we manage the application process and coordinate inspections. If it doesn’t, we move forward without the delay and cost of permitting.
Either way, all work is done to code. A permit doesn’t determine quality. It’s a regulatory requirement based on project scope. We’ve been doing this for 50 years and know exactly what Nassau County requires. You don’t have to figure that out yourself.
Most dormer projects take four to eight weeks from start to finish. A straightforward shed dormer with one room might be done in four weeks. A larger gable dormer with multiple rooms and a bathroom can take closer to eight.
Weather affects the timeline, especially in winter. Long Island gets snow, ice, and freezing temperatures that can pause roofing work for safety reasons. We don’t rush through critical structural work just to meet a deadline. We’d rather do it right than do it fast.
We’ll give you a realistic timeline upfront and keep you updated throughout the project. If something changes, you’ll know immediately. No surprises, no vague “we’ll be done soon” responses when you ask for an update.
Yes. Flower Hill has beautiful Colonial, Cape Cod, and Tudor homes that deserve dormer additions designed to complement the existing architecture, not clash with it.
We match your roofline pitch, siding material, window style, and trim details so the dormer looks like original construction. If your home has cedar shakes, the dormer gets cedar shakes. If you have specific window mullion patterns, we replicate them.
This isn’t cookie-cutter work. Every house is different, and every dormer gets designed specifically for that house. We’ve worked on enough historic and high-end homes in Nassau County to know that details matter. Your neighbors shouldn’t be able to tell where the original house ends and the addition begins.
Absolutely. Adding a bathroom is one of the most common requests for dormer projects in Flower Hill. You’re creating a bedroom, and it makes sense to have a private bathroom attached.
We handle all the plumbing, including running new water lines and waste lines from the attic down to your main plumbing stack. The bathroom gets fully finished with tile, fixtures, ventilation, lighting, and whatever finishes you choose.
This is especially valuable if you’re creating an in-law suite or a primary bedroom retreat. A bedroom without its own bathroom is less functional and adds less value to your home. If you’re investing in the dormer, it makes sense to do it right and include the bathroom from the start.
We handle it. Construction sometimes reveals issues you couldn’t see before opening up walls and roofing. Old framing that needs reinforcement. Electrical that’s not up to code. Insulation that’s inadequate.
When we find something, we tell you immediately, explain what it means, and give you options for addressing it. No hiding problems or hoping you don’t notice later. We’ve been doing this long enough to know that transparency builds trust, and trust leads to referrals.
If an emergency happens during construction or after, you can reach us. Ray Coleman has answered calls at 3 a.m. to help customers deal with frozen pipes. That level of availability doesn’t stop once your project is finished. We stand behind our work and we’re here if you need us.
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