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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.

Vinyl Seawall Panels: When and Where To Use Them

June 29, 2020
If you own waterfront property in Florida, you already know that the key to keeping your shoreline in place is installing a good quality seawall that...
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Must-Have Boat Lift Accessories and Supplies

June 22, 2020
So, your beautiful new boat lift is in place, and you're looking forward to using it for many years. A well made lift should last for a long time on...
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4 Reasons Seawalls Fail and How to Prevent it

June 15, 2020
Seawalls are a form of defense constructed in the coastal areas where the sea directly impacts landforms. The different types used today are a...
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