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Duncan Seawall, Dock and Boat Lift LLC 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.

As one of Southwest Florida largest marine contractors, Duncan Seawall offers a complete line of dredging services and waterfront structures 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.

If you live in Sarasota, St Petersburg, Bradenton, Venice or anywhere in between, you've seen our work!

Duncan Seawall Dock and Boat Lift, Florida, Bradenton, Sarasota and manatee marine construction and dredging services


Duncan Seawall, Dock & Boat Lift LLC was established in 1979. The company started with just one small barge and two employees. Today the company has grown to over nineteen barges, over one-hundred employees, and all the necessary equipment and personnel needed to complete any size project.

Duncan Seawall, Dock & Boat Lift LLC has become the area’s largest and most respected marine construction company due to their reputation for providing excellent service and quality workmanship at a fair price.

Through the years the company has expanded to include commercial and municipal projects all over the state of Florida.

Duncan Seawall looks forward to use its past experience in conjunction with today’s ever-changing marketplace to give our customer the very-best in service and selection.

Licenses & Insurances
• Marine Contractor License # A1346 & A073
• Bonding through Travelers, an A+ rated company.
• Protected by USL&H and Jones Act Maritime Endorsement
• Liability Insurance through Wyman, Green, & Blalock.
• Full Workman’s Compensation coverage.






 



 
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