Expert construction for over 45 years in seawalls, docks, boat lifts, dredging, rock revetment, retaining walls, and so much more…

About Us

Whether you need a seawall, dock, boat lift, dredging, rock revetment (rip-rap), or a retaining wall, Coast Seawall Dock & Boatlifts is here to meet all your needs. Serving customers since 1979, Mike Duncan (owner/contractor) has the knowledge, experience, and expertise needed to tackle any marine construction project.

Coast Seawall Dock & Boatlifts will answer questions and guide you step-by-step through your waterfront project, from permitting to the finished product. You can trust that we are committed to using the highest quality materials available, at the best possible value. We have high standards and brand integrity. We use time-tested, proven processes and settle for nothing less than impeccability. Above all, we recognize that it is a privilege to assist you in making your marine construction dreams a reality.

What We Do

Coast Seawall Dock & Boatlifts is one of South Florida’s leading professional marine construction companies specializing in both residential and commercial marine construction. The firm was founded by Mike Duncan as “Duncan Seawall” in 1979 and is now named Coast Seawall Dock & Boatlifts. We have over 45 years of experience and have grown to a full service coastal and marine construction firm. Our goal is to meet your every need.

Our Services

SEAWALLS

We build seawalls that can withstand the elements and offer a free five-year assessment

DOCKS

We build quality, custom docks using the highest quality materials and craftsmanship

BOATLIFTS

We install customized lifts from 1,000 to 60,000 lb. capacity and are here to work with your budget

ROCK REVETMENTS

Coast Seawall Dock & Boatlifts has over 45 years of experience in installing rock revetments (rip rap)

DREDGING

From the smallest residential dredge job to the most extensive commercial dredge, Coast Seawall Dock & Boatlifts has you covered

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Limor, Vinyl Seawall Concrete Cap-6 copy

Testimonials

All the guys at Coast Seawall are amazing. They have done several jobs for me and they could not have turned out better. I highly recommend them to all of my friends that live on the water. A++++++

Coast Seawall recently build both our seawall and dock in Boynton Beach. Mike Duncan and his team are top notch professionals and have excellent craftsmanship. The dock and wall gets great compliments from everyone who has seen it, including a number of general contractors who live in the neighborhood. Great job Coast Seawall. Can't thank you enough.

Very professional and dependable! They were recommended to me by a neighbor and I have used them for both dock and boat lift with great results.

My newly purchased home in Lantana had a backyard sloping very steeply into the canal. After researching seawall alternatives, I decided on rip-rap. Coast filled in my yard several feet deep to level it, put in beautiful rip-rap, and installed a dock. They were extremely punctual and professional. They delivered exactly what they promised, at the times promised. It has been two years, and the dock and seawall look exactly as installed. The dock pilings are very solid, even though our canal, (supposedly 4 foot deep), is deep in muck and they had to go down 9 feet to find solid footing! (And there was no mention of additional cost for driving the pilings much deeper than our survey suggested.) It was such a pleasure dealing with such professionalism, so unusual in my experiences with Florida companies!

We could not be happier. Coast Seawall did excellent work in an extremely professional manner when installing a rock revetment at our home on the ICW. The job was complicated by the fact that the only access was though our neighbor's yard. Coast kept them informed and protected their property every step of the way. We previously used them for a dock which we love and will use them again for any of our waterfront projects. Thank you Coggin and Mike! Ilene and Bob Boorman

Coast Seawall..., backed by the experience of Mike Duncan, constructed a rock wall, Azek deck & Deco boat lift at my residence in Captain's Key. Everything was constructed with the upmost attention to detail. I also appreciated their guidance through the process. Well done Coast team!

About Us

What We Do

Our Services

SEAWALLS

DOCKS

BOATLIFTS

ROCK REVETMENTS

DREDGING

Gallery

Testimonials

Top Brands

Boatlifts

Decking

Lumber Company

Floating Docks

Seawall Panels

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