Trusted Home Extension Contractors in the Hamptons

Thoughtfully Designed, Expertly Built — Expand Your Home with Hamptons Dormers

Home Extensions in the Hamptons & Long Island

When you love your home but need more space, a well-planned extension can transform the way you live. At Hamptons Dormers, we specialize in building seamless, high-quality home extensions that enhance both the beauty and functionality of your property. Whether you’re looking to expand your kitchen, add a guest suite, create a sunroom, or build a second-story addition, our team brings decades of experience, local knowledge, and unmatched craftsmanship to every project.

We proudly serve homeowners across the Hamptons and Long Island’s East End, delivering personalized service and elegant results that feel like a natural part of your existing home.

About Cascella and Sons Construction

At Cascella and Sons Construction, we specialize in transforming homes across the Hamptons and Long Island with expertly built dormers, seamless home extensions, and beautifully tailored kitchens. With every project, we bring generations of hands-on craftsmanship, clear communication, and a genuine commitment to quality.

Trusted, Local Builders Serving the Hamptons
As a family-owned company based on Long Island, we know the homes, neighborhoods, and building codes of the Hamptons inside and out. We’re not a franchise—we’re your neighbors. And we treat your home with the same care we’d give our own.
Quality Craftsmanship, Backed by Experience
With decades of experience in residential construction, our team delivers projects that stand the test of time. From foundation to finish work, we focus on every detail to ensure precision, durability, and timeless style. We don’t cut corners—and our results speak for themselves.
Personalized Service from Start to Finish
At Cascella and Sons, you’re never just another job. We work closely with each client to understand your vision, provide honest guidance, and deliver a final result that exceeds expectations. You’ll always know where your project stands—and you’ll love where it ends up.
Ready to Build Something Exceptional?
Whether you’re planning a dormer, a kitchen transformation, or a full home extension, Cascella and Sons Construction is the team to trust. Let’s bring your ideas to life with craftsmanship and care that you can count on.

Let’s Design Your Perfect Home Extension
Built for the Hamptons

We understand the unique characteristics of homes in the Hamptons—from traditional shingle-style designs to modern coastal retreats. Our team is familiar with local zoning laws, permit requirements, and environmental regulations, and we build every extension with durability, elegance, and local compliance in mind.

We use high-quality materials and time-tested building practices to create extensions that stand up to the seasonal elements and age beautifully over time.

Why Choose Hamptons Dormers?

We understand the unique characteristics of homes in the Hamptons—from traditional shingle-style designs to modern coastal retreats. Our team is familiar with local zoning laws, permit requirements, and environmental regulations, and we build every extension with durability, elegance, and local compliance in mind.

We use high-quality materials and time-tested building practices to create extensions that stand up to the seasonal elements and age beautifully over time.

How long does a home extension project usually take?
The timeline depends on the size and complexity of your extension, but most projects take anywhere from 8 to 16 weeks from permit approval to completion. We’ll provide a detailed schedule before we begin and keep you updated throughout the process.

We ensure every detail, from roofline to trim, blends perfectly with your existing structure, maintaining your home’s charm while adding valuable square footage.
What types of home extensions do you offer?
We build all types of residential extensions, including rear additions, side extensions, second-story builds, sunrooms, guest suites, and expanded kitchens or living areas. If you can dream it, we can build it.
Do I need permits for a home extension in the Hamptons?
Yes, most extensions require permits and must meet local zoning and building codes. Our team handles the entire permitting process for you and ensures all work is fully code-compliant.
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