Building Waterfront Structures that Stand Up to the Coast.
Serving Maine’s Midcoast
Sand Island Marine Construction brings dependable craftsmanship to waterfront properties throughout Maine’s Midcoast. Our crew handles challenging shorelines, island access, and open water conditions with steady hands and practical experience. From Boothbay and Bristol to Rockland, Rockport, and Camden, homeowners and commercial clients trust us to build structures that stand up to tide, weather, and time.
Dock Construction
Float Construction
Ramps
DEP Permitting
Erosion Control
Sea Walls
Our Services
Mooring Work
Inspections
Repair Services
Island Earthwork Projects
Island Septic Systems
Shoreline Restoration
DEP Certified in Erosion Control Practices
Sand Island Marine Construction is fully certified by the DEP in both Basic and Advanced Erosion Control Practices. This allows us to protect your shoreline while meeting all state requirements for soil and water management. Our team follows proven methods that prevent sediment runoff, safeguard coastal habitat, and support long term shoreline stability. Every project is built with careful attention to tide, drainage, and natural erosion patterns so your property is protected for the future.
Commercial
Our commercial clients rely on us for dependable work and clear communication from start to finish. We build strong waterfront structures that support day to day operations and stand up to the demanding conditions of Maine’s Midcoast. Whether it is heavy duty docks, ramps, sea walls, access improvements, or barge based work in tight or exposed locations, our crew brings practical experience and safe work habits to every job. We understand scheduling needs, environmental standards, and the importance of finishing work on time.
Residential
Homeowners along the Midcoast turn to us for waterfront structures that blend strong craftsmanship with respect for the natural shoreline. We handle docks, floats, ramps, shoreline restoration, erosion control, moorings, and full island site projects with the same care we would use on our own properties. Each build is shaped by the tide, ledge, exposure, and access needs unique to your location. Whether your home sits in Boothbay Harbor, Rockport, or any nearby community, we help you enjoy safe and reliable access to the water while preserving the beauty of your shoreline.
Let’s work together.
