Discover an exceptional commercial opportunity along Rockland's highly visible waterfront corridor. 771 Main Street offers 1.64 acres with direct frontage on Main Street/Route 1 and over 22,000± square feet of flexible mixed-use space across multiple industrial buildings. The property features high-clearance warehouse areas, production or fabrication space, offices, and covered loading/working zones, ideal for a wide range of commercial, industrial, marine, or creative uses. A rare asset, the facility includes multiple industrial cranes with lifting capacities exceeding 20 tons, supporting heavy fabrication, marine service, and advanced industrial operations. Primary structures are pre-engineered steel with overhead doors, concrete floors, oil-fired heat, and open-span layouts, allowing efficient workflow and adaptability for light manufacturing, storage, trades, or redevelopment. Additional highlights include ample paved parking, multiple access points, and public utilities. Located within the Rockland Historic District, the property abuts the historic Granite Pier, which is currently offered for sale, creating a unique opportunity for expanded harbor-side use or assemblage. The site is surrounded by potential marinas, marine-oriented activity, arts and cultural destinations, and Rockland's downtown business hub. The combination of scale, visibility, heavy-industrial infrastructure, and waterfront adjacency presents a rare investment opportunity in one of Midcoast Maine's most dynamic commercial markets. Bring your vision—industrial, marine trades, retail, mixed-use, or commercial—or seize a once-in-a-lifetime opportunity to create a new destination on Rockland Harbor, with the potential for waterfront restaurants and shops..