Duncan Seawall
Full-Service Marine Construction

Seawalls, Docks, Boat Lifts, Electrical, & More

Southwest Florida's
Largest Marine Contractor

We will take care of your needs – from permits to clean up

Dedicated to
Servicing our Customers

Committed to responding to each call in less than 24-hours

Service Tailored to Your Needs

Duncan Seawall Dock & Boat Lift is a full service marine construction company that focuses on the individual building needs of each customer we serve. From large commercial marinas to residential docks, our knowledgeable employees will take care of your needs – from permits to clean up. 

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Florida's Largest Residential Marine Contractor Since 1979

Southwest Florida's largest marine contractor, Duncan Seawall offers a complete line of waterfront structures and dredging services which can be seen throughout Sarasota, Manatee, Charlotte, Pinellas and other surrounding counties. Our success is attributed to our commitment to quality workmanship and unsurpassed customer service.

Seawalls

Seawalls must withstand some of the most brutal conditions of any marine structures built today. Let us help you protect your waterfront property.

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Docks

Whether you need a dock for your personal watercraft or a new 200 slip marina, Duncan Seawall has the experience and ability to build a dock you will be proud of for years to come. 

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Boat Lifts

Duncan Seawall installs Golden Boat Lifts and has been named Golden’s number one worldwide dealer every year for the past decade. 

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Truline

Committed to Customer Satisfaction

"You have created a culture within your organization that is committed to customer satisfaction which held up in spite of my hectic demands. We regularly hear the term “Customer Service” and your organization is proving it still exists today! You should be proud of your accomplishments."

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Every facet of this project has been pleasant

"The boat lift work performed has been such a refreshing experience! Lately, it seems like all we experience are consumer disappointments and frustrations, but the entire staff at Duncan Seawall continually impressed me with their professionalism, honesty, competence, flexibility, and their limitless efforts to exceed my every expectation -- and this was all handled with a sense of humor. Every facet of this project has been pleasant."

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We made a wise choice

"Your company recently finished repairing our seawall at Lawrence Pointe. Our sidewalk had settled and caused numerous seawall cracks. We very much appreciated your promptness in responding to our concerns and the professional manner in which the repairs were accomplished. It confirms we made a wise choice when we selected Duncan Seawall to install our new seawall."

First Last I - Manager

Latest Blog Posts

Take a look at the latest information from Duncan Seawall about docks, seawalls, and other marine construction news.

What are My Boat Lift Options for Shallow Water

March 1, 2021
Every boat and boat dock is different. The depth of the water around your residential or commercial property can create a challenging opportunity for...
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Do You Know the Difference Between Breakwater and a Seawall?

February 22, 2021
For property owners directly on the shoreline, protection against erosion has become synonymous with protecting their property. There are several...
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What is a Spring Line and How do I Use One?

February 15, 2021
If you've invested in a beautiful boat, you'll surely want to take care of it from dock to water and back again. A spring line can be an excellent...
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