Unlock the full potential of the Florida Keys commercial market with this offering of a rare combined set of parcels including 13755 and 13759 Overseas Highway, and an additional parcel of 2.9 acres of submerged bay bottom located in the heart of Marathon. These adjacent parcels and bay bottom present a unique opportunity for developers, investors, or end-users seeking high-traffic frontage, open-water access, and bay bottom rights. Property is zone Mixed Use Commercial (MU-C). Currently has two concrete dwellings on-site with 4 building rights, deep water access, and dockage. Direct open water with panoramic views and potential for dock development, boating, or a water sport business. Ideal for possible hotel/motel, retail, restaurant, marina, or mixed-use commercial ventures (subject to city approval). High visibility corridor daily on US-1/Overseas Highway. Benefit from strong foot traffic and year-round visitors. Ownership of the bay bottom opens unique possibilities for water-related commercial activity. Rare opportunity to acquire two contiguous parcels with waterfront, bay bottom rights, four dwelling rights and highway presence. Whether you're envisioning a boutique resort, a landmark restaurant on the water, or a marine-focused business, this combined site offers everything you need - land, location, and lifestyle.