Build Your Dream Home in Exclusive Key Marco. A rare 1/2-acre waterfront lot with direct Gulf access--an opportunity that has virtually disappeared on Marco Island. Set within the private, gated community of Key Marco, this homesite offers unmatched value, privacy, and design freedom, including a 55-foot building height. allowance for sweeping panoramic views. Enjoy a private marina with assigned boat slip, clubhouse, tennis and pickleball courts, and HOA fees under $700 per month. Surrounded by estate homes valued at $5M+, the community ensures long-term prestige and exclusivity. From your backyard, explore the world-famous Ten Thousand Islands--a paradise for boating, fishing, wildlife, and pure relaxation. Walk, jog, cycle, kayak, or paddleboard through this nature-rich sanctuary, all just minutes from Marco Island's renowned white-sand beaches, shops, and dining.