Pretty Joe Rock is an ultra-exclusive 0.25-acre private island that offers the quintessential Florida Keys "offshore" experience without the typical logistical hurdles. As one of only 34 offshore properties in the entire 1,700-island chain to feature a residence—and one of just nine dedicated to a single home—this island is a trophy asset with a storied history, including a featured appearance on HGTV. It represents a rare opportunity to own a secluded sanctuary that remains intimately connected to the amenities and infrastructure of Marathon.
Property Details
The island is a masterclass in resilient, high-utility island living.
Infrastructure: Unlike most offshore keys that rely on cisterns and generators, Pretty Joe Rock is serviced by mainland electricity and city water.
Residential Potential: While the original home was affected by historic storm events, the property is being sold with the rare "right to build" intact. Plans are currently underway for a new, code-compliant single-family residence designed to maximize 360-degree views and capture the Gulf of Mexico’s famous sunsets.
Landscaping: The island features a fossilized ancient reef foundation, ensuring structural stability. Its interior is a lush tapestry of mangrove paths, exotic orchids, and tropical plantings.
Land and Water
Surrounded by the crystal-clear turquoise waters of the Gulf, Pretty Joe Rock is a vibrant marine sanctuary. The island is frequently visited by manatees, sea turtles, and dolphins, while the surrounding shallows offer world-class snorkeling and flats fishing directly from the private dock. The natural mangrove vegetation provides both a privacy screen and a sanctuary for diverse bird species, including pelicans and parrots.
Access and Utilities
The island’s greatest luxury is its ease of access. The sale includes a deeded onshore easement at the end of 43rd Street in Marathon, providing a private mainland dock and dedicated guest parking. The transit to the island is so brief that the mainland remain visible, allowing for effortless "off-island" trips for dining and supplies. Key West is located approximately 50 miles away, offering a perfect day-trip destination via the Overseas Highway.
Lifestyle and Value
Pretty Joe Rock offers a dual-value proposition: it is both a premier private retreat and a high-performing investment asset. Historically a successful vacation rental, the island’s brand recognition from national television and travel media provides a built-in marketing engine for future hospitality use. Whether used as a personal family legacy or a boutique rental, Pretty Joe Rock provides the ultimate "get away from it all" experience with the rare peace of mind that comes from city utilities and mainland proximity.
