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

45 years in business and accredited by the BBB

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


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


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


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


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


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


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5500 Military, TrailSuite 22-301Jupiter, FL 33458, United States

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