Custom Home Addition Contractor Near Ocean County, NJ

Expand Your Living Space With Seamless, High-Quality Additions

Need more room without leaving the home you love? Coast Carpentry specializes in custom home additions that blend perfectly with your existing structure while adding the space you need. Backed by decades of experience and a deep passion for craftsmanship, we help homeowners across Ocean County grow their homes with style, function, and long-term value.

Built to Match. Built to Last.

A great home addition shouldn’t feel like an afterthought—it should feel like it’s always been there. That’s why we approach every project with a custom plan that’s fully integrated into your home’s layout, design, and structural flow. Whether it's a sunroom, guest suite, second floor, or bump-out extension, we focus on craftsmanship, comfort, and consistency. Our team manages everything from permitting to finishing touches, so your project moves forward smoothly, on time, and with the attention to detail we’re known for.

Skilled Carpenters

Our carpenters approach each build with a sense of passion, and harness their many years of construction experience to build your project in the best way possible, with zero corners cut.

Licensed & Insured

Our team is fully licensed and insured for home additions and home remodels, allowing permits to go through, keeping your build effortless and moving how it should.

One-Of-A-Kind Quality

At Coast Carpentry, we don’t build standard—we build standout. Each project is crafted with one-of-a-kind detail, precision, and pride, resulting in a space that’s as unique as your home.

Home Addition Contractors With Experience

We’ve completed additions all across Ocean County—from second-story expansions in Rumson to cozy sunrooms in Spring Lake. With local knowledge of zoning laws, building codes, and neighborhood styles in towns like Point Pleasant, Toms River, and Colts Neck, we make sure your addition is not only stunning but fully compliant. Homeowners in coastal areas like Lavallette and Bay Head trust us to build smart and strong—especially when it comes to structural integrity in changing climates.

With a foundation rooted in precision framing and fine finish work, Coast Carpentry brings unmatched expertise to every home addition we build. Our team understands how to seamlessly connect new structures with existing homes—both visually and structurally. Owner Chris Duffy personally oversees each phase of construction, ensuring your addition isn’t just code-compliant, but beautifully crafted and built to last. When you choose Coast Carpentry, you’re choosing a partner who values your home as much as you do.

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Get A Free Estimate On Your New Home Addition Office Addition Gym Addition Today

Looking to grow your space without the stress? Contact Coast Carpentry today for a custom consultation. We’ll help you design and build an addition that enhances your home’s beauty, comfort, and value—from the ground up.

Building Cool Projects Is Our Passion

Why Choose Us?

Your home deserves more than average. At Coast Carpentry, we treat every project as a reflection of our craft and commitment to excellence. With decades of hands-on experience and a true passion for carpentry, we bring unmatched quality, communication, and care to every home we work on. From the first consultation to the final detail, you can trust that your project is in the right hands.

Owner Led & Hands-On

Owner Chris Duffy is involved in every project from start to finish. With a personal commitment to quality and craftsmanship, he’s on-site, leading the process and ensuring each detail lives up to the Coast Carpentry standard.

Personalized Approach

We believe custom work should feel… custom. That’s why we take the time to understand your vision, style, and lifestyle needs. Everything we build is tailored specifically to you—not a builder grade plan.

Top Rated Home Addition Contractor Near Me

Our Clients Love Our Work & Authenticity

At Coast Carpentry, nothing means more to us than the trust and satisfaction of our clients. We take pride in building not just beautiful spaces, but strong relationships grounded in communication, integrity, and top-tier craftsmanship. From custom decks to full home remodels, our clients know they can count on us to deliver stunning results—on time and with care. Their kind words and referrals are the greatest testament to the work we do.

Frequently Asked Questions

An addition requires some thought and we want to make sure you are well equip with all the information you might be needing when searching for a home addition contractor! Learn from our expert contractors below!

Will my addition match the style of my existing home?

Yes—every detail is considered, from siding and roofing to trim and layout, so your new space feels like a natural extension of your home.

What is the typical timeline for completion?

It depends on the size and complexity, but most additions take between 6–12 weeks. We provide a clear timeline and keep you updated throughout.

Can we customize everything in the addition?

Yes—from layout and room purpose to finishes and fixtures, we build everything around your vision and needs.

Do I need permits for a home addition in NJ?

Yes, and we handle all permitting and inspections to ensure your project complies with local building codes.

Can you build on a second story addition?

Absolutely. We specialize in both ground-level and upper-level additions and will assess your existing structure to determine what’s possible.

Will my home be livable during the construction process?

In most cases, yes! We work in phases to minimize disruption and keep your home functional while we build.

Proudly Providing Professional Additions To Our Local Neighbors

Serving Ocean & Monmouth County

From Point Pleasant and Lavallette to Rumson, Colts Neck, and beyond, Coast Carpentry brings the same level of care, creativity, and professionalism to every home we work on. We understand the character and style of each coastal town and tailor our designs to complement your home’s surroundings. Whether we’re building a custom pavilion in Spring Lake, a full addition in Toms River, or detailed trim work in Bay Head, we deliver high-end results that reflect our dedication to quality and your unique vision.