Get More Pleasure Out of
Your Life on the Lake
Serving the Region with Quality Docks, Marine Products and Construction for Years of Care-Free Enjoyment

Contact Us!


High-Quality Contracting Services

Take full advantage of your life by the lake or on land with OSM Off-Shore Marine & Construction, Inc. located in the Finger Lakes above Seneca Lake in Dundee, NY. We can help turn any property into a serene retreat with the variety of services OSM has to offer.

Our experienced professionals can custom build your decks, porches, patios, boat lifts, docks, boat houses, staircases, along with conversion kits for sun and screen rooms. General contracting is now available for your interior and exterior needs.

We also provide a variety of boat services, including repairs, sales, and storage. Your satisfaction is our top priority.

With over 14 years in the business, we wouldn’t have made it this far if we didn’t put our customers first. We are proud of the work we do and we know you’ll love it too!